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EBEORL-HNS study materials
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EBEORL-HNS practice questions

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Question 1Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

Which cranial nerve provides motor innervation to the cricothyroid muscle?

  1. Recurrent laryngeal nerve
  2. External branch of the superior laryngeal nerve Correct answer.
  3. Hypoglossal nerve
  4. Internal branch of the superior laryngeal nerve

Explanation

The cricothyroid is the only intrinsic laryngeal muscle supplied by the superior laryngeal nerve, specifically its external branch, which also carries secretomotor fibers to the thyroid gland. The recurrent laryngeal nerve supplies all other intrinsic muscles. The internal branch is purely sensory above the vocal folds.

Question 2Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

A patient reports sudden unilateral hearing loss with a normal otoscopic examination and no vertigo. Which investigation establishes the diagnosis of idiopathic sudden sensorineural hearing loss?

  1. Speech reception threshold equal to the pure-tone average
  2. Tympanometry demonstrating a type B tympanogram
  3. Pure-tone audiometry showing a sensorineural loss of at least 30 dB across three contiguous frequencies Correct answer.
  4. Rinne test showing air conduction greater than bone conduction

Explanation

Sudden sensorineural hearing loss is defined audiometrically as a sensorineural loss of 30 dB or more over at least three contiguous frequencies developing within 72 hours. Otoscopy is typically normal, so audiometry is the diagnostic cornerstone and also guides prognosis. Tympanometry assesses middle-ear mechanics rather than cochlear function.

Question 3Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

Which organism is the most common cause of acute bacterial rhinosinusitis in adults?

  1. Staphylococcus epidermidis
  2. Streptococcus pneumoniae Correct answer.
  3. Aspergillus fumigatus
  4. Pseudomonas aeruginosa

Explanation

Streptococcus pneumoniae, Haemophilus influenzae, and Moraxella catarrhalis dominate acute bacterial rhinosinusitis in adults. Pseudomonas and Aspergillus are typical of immunocompromised or nosocomial disease, not community-acquired acute infection. Coagulase-negative staphylococci such as S. epidermidis are normal skin flora.

Question 4Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

A 3-year-old presents with fever, drooling, and a muffled voice, sitting forward in a tripod position. Which initial airway maneuver is most appropriate?

  1. Place the child supine and apply cricoid pressure
  2. Allow the child to remain in a comfortable position and prepare for controlled intubation in the operating theatre Correct answer.
  3. Perform a tongue depressor examination of the oropharynx to visualize the epiglottis
  4. Obtain a lateral neck radiograph before any airway intervention

Explanation

The presentation suggests acute epiglottitis with imminent airway obstruction. Agitating the child or instrumenting the pharynx can precipitate complete obstruction, so the child should be kept calm and the airway secured in a controlled setting with anesthesia and surgical backup. Radiographs and oral examination are deferred until the airway is secure.

Question 5Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

Which feature on temporal bone imaging is most characteristic of a vestibular schwannoma?

  1. A lytic lesion of the petrous apex with a soft-tissue mass and bone erosion
  2. An intracanalicular mass widening the internal auditory canal with an ice-cream-cone shape Correct answer.
  3. Bilateral symmetric enlargement of the cochlear aqueduct
  4. A well-defined hypodense lesion in the middle ear with ossicular erosion

Explanation

Vestibular schwannomas arise from the vestibular division of cranial nerve VIII and typically appear as an enhancing mass centered on the internal auditory canal, often widening the porus acusticus with an ice-cream-cone configuration. Petrous apex lytic lesions suggest cholesterol granuloma or malignancy. Middle-ear ossicular erosion suggests cholesteatoma.

Question 6Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

A 45-year-old presents with a painless thyroid nodule. Fine-needle aspiration cytology is reported as Bethesda category III (atypia of undetermined significance). What is the most appropriate next step?

  1. Repeat fine-needle aspiration or molecular testing to refine risk Correct answer.
  2. Radioactive iodine ablation
  3. Immediate total thyroidectomy without further testing
  4. Observation with repeat ultrasound in five years

Explanation

Bethesda III carries an indeterminate malignancy risk of roughly 10 to 30 percent, so management aims to clarify risk before committing to surgery. Repeat aspiration or molecular testing is recommended to guide the decision for diagnostic lobectomy. Immediate total thyroidectomy overtreats a lesion that is often benign.

Question 7Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

Which paranasal sinus drains into the middle meatus beneath the middle turbinate?

  1. Maxillary sinus Correct answer.
  2. Nasolacrimal duct
  3. Posterior ethmoid air cells
  4. Sphenoid sinus

Explanation

The maxillary, anterior ethmoid, and frontal sinuses drain into the middle meatus, forming the ostiomeatal complex. The posterior ethmoid cells drain into the superior meatus, while the sphenoid sinus drains into the sphenoethmoidal recess. The nasolacrimal duct opens into the inferior meatus.

Question 8Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

A patient develops unilateral facial nerve palsy involving the forehead and eye closure. Which finding best distinguishes a peripheral from a central lesion?

  1. Preserved forehead wrinkling on the affected side
  2. Involvement of the upper face, including the frontalis and orbicularis oculi Correct answer.
  3. Contralateral lower facial weakness only
  4. Hyperacusis on the affected side

Explanation

The upper face receives bilateral cortical innervation, so a central lesion spares the forehead. A peripheral facial nerve lesion affects both upper and lower face on the same side, impairing forehead wrinkling and eye closure. Hyperacusis may accompany peripheral lesions but is not the distinguishing sign.

Question 9Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

Which is the most common site of origin for head and neck squamous cell carcinoma arising in the oral cavity?

  1. Retromolar trigone
  2. Hard palate
  3. Buccal mucosa
  4. Lateral border of the tongue Correct answer.

Explanation

The lateral and ventral border of the tongue is the most frequent oral cavity subsite for squamous cell carcinoma, reflecting its exposure to pooled saliva and carcinogens. The hard palate and buccal mucosa are less common sites. The retromolar trigone is a frequent site of spread from adjacent areas rather than the most common primary.

Question 10Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

A 60-year-old with a long smoking history presents with hoarseness and a 2 cm mobile level II neck node with an unknown primary after negative panendoscopy and imaging. Which management approach is most appropriate?

  1. Observation with repeat imaging in six months
  2. Empiric bilateral radical neck dissection
  3. Neck dissection with targeted radiation to the ipsilateral neck and potential mucosal axis, after discussion at a multidisciplinary tumor board Correct answer.
  4. Chemotherapy alone without local therapy

Explanation

Carcinoma of unknown primary in the neck after thorough workup is managed with multidisciplinary input, typically involving neck dissection for staging and control plus radiation to the involved neck and at-risk mucosal sites. Observation risks progression of an occult malignancy. Chemotherapy alone does not provide durable local control.

Question 11Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

Which test is the gold standard for diagnosing obstructive sleep apnea?

  1. Attended overnight polysomnography Correct answer.
  2. Overnight pulse oximetry alone
  3. Lateral cephalometric radiograph
  4. Epworth Sleepiness Scale score

Explanation

Attended polysomnography measures the apnea-hypopnea index and oxygen desaturation and remains the diagnostic reference standard for obstructive sleep apnea. The Epworth scale quantifies subjective sleepiness but cannot diagnose the disorder. Cephalometry and oximetry are adjuncts or screening tools with inadequate specificity.

Question 12Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

Which structure is at greatest risk during a tonsillectomy when dissection proceeds too deeply and laterally in the tonsillar fossa?

  1. Internal carotid artery Correct answer.
  2. External carotid artery
  3. Glossopharyngeal nerve
  4. Hypoglossal nerve

Explanation

The internal carotid artery lies posterolateral to the tonsillar fossa and can be injured by excessively deep or lateral dissection, particularly with an aberrant course. The external carotid is more medial and inferior. The glossopharyngeal nerve lies nearby but is typically injured by thermal spread rather than being the major vascular hazard.

Question 13Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

A patient presents with a rapidly enlarging, painful neck mass, fever, and torticollis after an upper respiratory infection. Which diagnosis is most likely?

  1. Thyroglossal duct cyst
  2. Branchial cleft cyst
  3. Lipoma
  4. Retropharyngeal abscess Correct answer.

Explanation

Fever, torticollis, neck pain, and recent upper respiratory infection in a child or young adult suggest a deep neck space infection such as retropharyngeal abscess. Congenital cysts and lipomas are typically painless and afebrile. Urgent imaging and drainage are often required for abscesses.

Question 14Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

Which finding is characteristic of cholesteatoma on otoscopy?

  1. A bluish bulging tympanic membrane with hemorrhagic blebs
  2. A retraction pocket containing keratin debris and foul-smelling discharge Correct answer.
  3. A pearly intact tympanic membrane with a fluid level
  4. A pulsatile red mass behind the tympanic membrane

Explanation

Cholesteatoma typically arises from a retraction pocket of the pars tensa or flaccida and contains desquamated keratin with chronic foul-smelling otorrhea. A fluid level suggests effusion, a pulsatile red mass suggests a glomus tumor, and hemorrhagic blebs suggest bullous myringitis.

Question 15Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

A patient with a unilateral nasal mass has epistaxis and proptosis. Biopsy shows a vascular tumor with uniform small round cells and perivascular pseudorosettes. What is the most likely diagnosis?

  1. Nasopharyngeal carcinoma
  2. Inverted papilloma
  3. Sinonasal undifferentiated carcinoma
  4. Esthesioneuroblastoma Correct answer.

Explanation

Esthesioneuroblastoma (olfactory neuroblastoma) arises from olfactory epithelium and shows small round cells with Homer Wright rosettes and perivascular pseudorosettes. It often presents with unilateral obstruction, epistaxis, and orbital symptoms. Inverted papilloma is benign and lacks these histologic features, while nasopharyngeal carcinoma is typically keratinizing or non-keratinizing squamous epithelium.

Question 16Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

Which is the most appropriate first-line treatment for a small, uncomplicated anterior epistaxis in a stable patient?

  1. Digital pressure and topical vasoconstrictor with chemical cautery of the bleeding point Correct answer.
  2. Immediate posterior nasal packing
  3. Ligation of the internal maxillary artery
  4. Embolization of the external carotid artery

Explanation

Anterior epistaxis from Kiesselbach plexus usually responds to direct pressure, topical vasoconstrictors, and cautery of the identified vessel. Posterior packing, arterial ligation, and embolization are reserved for severe or refractory bleeding. Escalating to invasive measures first exposes the patient to unnecessary risk.

Question 17Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

Which statement correctly describes the lymphatic drainage of the larynx above the vocal folds?

  1. It drains to the supraclavicular nodes directly
  2. It drains to the parotid nodes
  3. It drains exclusively to the submental nodes
  4. It drains primarily to the upper deep cervical nodes via the superior thyroid artery pedicle Correct answer.

Explanation

The supraglottis has a rich lymphatic supply that drains through the thyrohyoid membrane to the upper deep cervical chain, often bilaterally because of midline crossing. The glottis has sparse lymphatics, which is why early glottic cancer rarely metastasizes. Submental and parotid drainage is not characteristic of the larynx.

Question 18Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

A neonate has bilateral choanal atresia. Which presentation is most expected?

  1. Unilateral blood-stained nasal discharge
  2. Cyclical cyanosis relieved by crying Correct answer.
  3. Inspiratory stridor relieved by neck extension
  4. Persistent hoarseness with feeding

Explanation

Neonates are obligate nasal breathers, so bilateral choanal atresia causes cyclical cyanosis relieved by crying, when oral breathing occurs. Unilateral atresia may present later with unilateral obstruction and discharge. Stridor and hoarseness suggest laryngeal rather than choanal pathology.

Question 19Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

Which antibiotic is contraindicated in a patient with known severe penicillin anaphylaxis who requires prophylaxis for a contaminated head and neck surgical wound?

  1. Cefazolin Correct answer.
  2. Metronidazole
  3. Clindamycin
  4. Vancomycin

Explanation

Cephalosporins such as cefazolin share beta-lactam structure and carry a risk of cross-reactivity in patients with severe IgE-mediated penicillin anaphylaxis, so they are avoided. Clindamycin, vancomycin, and metronidazole are non-beta-lactam alternatives. Cross-reactivity risk is lower with later-generation cephalosporins but still relevant in severe reactions.

Question 20Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

Which nerve is most commonly injured during submandibular gland excision, causing weakness of the lower lip depressors?

  1. Hypoglossal nerve
  2. Lingual nerve
  3. Marginal mandibular branch of the facial nerve Correct answer.
  4. Glossopharyngeal nerve

Explanation

The marginal mandibular branch of the facial nerve runs near the inferior border of the mandible and is at risk during submandibular gland excision, producing weakness of the depressor anguli oris and depressor labii inferioris. The lingual nerve is sensory to the tongue, and the hypoglossal is motor to the tongue.

Question 21Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

Which mechanism best explains the sensorineural hearing loss associated with chronic suppurative otitis media?

  1. Bacterial endotoxin and inflammatory mediators diffusing through the round window membrane Correct answer.
  2. Eustachian tube dysfunction producing a conductive effusion
  3. Ossicular fixation by tympanosclerosis
  4. Negative middle-ear pressure causing tympanic membrane retraction

Explanation

Chronic suppurative otitis media can cause sensorineural loss when bacterial products and inflammatory cytokines cross the round window membrane and damage the inner ear. Ossicular fixation, retraction, and effusion produce conductive losses. This distinction guides the urgency of surgical management.

Question 22Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

Which statement about the pathophysiology of Meniere disease is best supported?

  1. Demyelination of the vestibular nerve producing positional nystagmus
  2. Endolymphatic hydrops with episodic vertigo, fluctuating hearing loss, tinnitus, and aural fullness Correct answer.
  3. Viral inflammation of the vestibular ganglion causing acute prolonged vertigo
  4. Autoimmune destruction of the cochlear hair cells with sudden irreversible deafness

Explanation

Meniere disease is characterized by endolymphatic hydrops producing the classic tetrad of episodic vertigo, fluctuating sensorineural hearing loss, tinnitus, and aural fullness. Symptoms last minutes to hours and recur. Acute prolonged vertigo suggests vestibular neuritis, and positional nystagmus suggests benign paroxysmal positional vertigo.

Question 23Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

A patient has a midline neck mass that moves upward with tongue protrusion. Which embryologic structure does this lesion arise from?

  1. Fourth branchial pouch
  2. Third pharyngeal pouch
  3. Thyroglossal duct Correct answer.
  4. Second branchial cleft

Explanation

A thyroglossal duct cyst arises from remnants of the tract formed as the thyroid descends from the foramen cecum to the lower neck. Because the tract attaches to the tongue base, the mass moves with tongue protrusion. Branchial cleft cysts are lateral, and pouch anomalies present differently.

Question 24Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

Which of the following best describes the principle of sentinel lymph node biopsy in early oral cavity squamous cell carcinoma?

  1. It samples the contralateral neck to assess bilateral drainage
  2. It identifies the first draining node with radiolabeled tracer and blue dye to stage the clinically negative neck Correct answer.
  3. It removes all levels I to V prophylactically to prevent metastasis
  4. It uses positron emission tomography to detect micrometastases before surgery

Explanation

Sentinel lymph node biopsy uses radiolabeled colloid and blue dye to locate and excise the first draining lymph node, allowing pathologic staging of the clinically N0 neck with less morbidity than elective neck dissection. It is most validated in early oral cavity tumors. It does not remove all neck levels and is not a PET-based technique.

Question 25Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

A patient with a fish bone lodged in the throat has odynophagia and drooling. Which imaging study is most appropriate to localize a suspected radiolucent foreign body?

  1. Computed tomography of the neck Correct answer.
  2. Ultrasound of the neck
  3. Plain lateral neck radiograph
  4. Barium swallow study

Explanation

Many ingested foreign bodies such as fish bones are radiolucent on plain films, and computed tomography offers high sensitivity for localization and for detecting complications such as abscess or perforation. Barium studies can obscure subsequent endoscopy. Ultrasound is limited by air in the aerodigestive tract.

Question 26Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

A 30-year-old woman reports episodic vertigo lasting hours, left-sided roaring tinnitus, and aural fullness. Audiometry shows a low-frequency sensorineural hearing loss in the left ear. Which additional finding would most support a diagnosis of Meniere disease?

  1. Bilateral symmetric high-frequency hearing loss with normal speech discrimination
  2. Continuous unremitting vertigo lasting several weeks
  3. A conductive hearing loss with an intact mobile tympanic membrane
  4. Fluctuating hearing thresholds documented on serial audiograms Correct answer.

Explanation

Meniere disease is defined by episodic vertigo, fluctuating sensorineural hearing loss, tinnitus and aural fullness; the fluctuating nature of the hearing loss on serial testing is a hallmark supporting the diagnosis. Conductive loss, continuous vertigo or symmetric presbycusis-type loss point elsewhere.

Question 27Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

Which paranasal sinus structure is most frequently involved in the development of a mucocele that produces progressive proptosis and downward displacement of the globe?

  1. Maxillary sinus
  2. Sphenoid sinus
  3. Frontal sinus
  4. Ethmoid sinus Correct answer.

Explanation

Ethmoid mucoceles commonly expand through the thin lamina papyracea into the orbit, causing proptosis and lateral or downward globe displacement. Frontal and sphenoid mucoceles occur but characteristically produce different patterns of orbital or cranial nerve involvement.

Question 28Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

During a revision mastoidectomy, the surgeon identifies a cell tract running anterior to the vertical portion of the facial nerve and inferior to the horizontal semicircular canal. Which structure does this tract most directly threaten?

  1. Jugular bulb Correct answer.
  2. Internal carotid artery
  3. Sigmoid sinus
  4. Facial nerve geniculate ganglion

Explanation

The infra-labyrinthine cell tract runs anterior to the facial nerve and inferior to the labyrinth, and drilling here can expose the jugular bulb. The sigmoid sinus lies posteriorly, the geniculate ganglion lies superiorly and anteriorly, and the carotid lies further anteriorly.

Question 29Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

A 55-year-old presents with a slowly enlarging, firm, painless mass in the tail of the parotid gland. Fine-needle aspiration suggests a benign pleomorphic adenoma. Which management principle is most appropriate?

  1. Enucleation of the tumor through a small incision directly over the mass
  2. Superficial parotidectomy with a cuff of normal tissue around the tumor Correct answer.
  3. Observation with repeat imaging every six months indefinitely
  4. Radiotherapy alone as primary treatment

Explanation

Pleomorphic adenoma requires excision with a margin of normal parotid tissue, usually superficial parotidectomy or partial parotidectomy, because simple enucleation leads to recurrence from pseudopodia. Facial nerve preservation is standard.

Question 30Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

Which clinical feature most strongly suggests that a neck mass in an adult is a branchial cleft cyst rather than a metastatic lymph node?

  1. A firm mass fixed to underlying structures in level IV
  2. A cystic mass located anterior to the sternocleidomastoid muscle at the junction of its upper and middle thirds Correct answer.
  3. A hard mass in the submental triangle with overlying skin ulceration
  4. A mass that moves with swallowing and tongue protrusion

Explanation

Second branchial cleft cysts classically present as a fluctuant mass at the anterior border of the sternocleidomastoid at the junction of its upper and middle thirds. Fixation, hardness, and level IV location raise concern for metastasis and warrant evaluation.

Question 31Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

A patient with a large glottic tumor has stridor at rest and use of accessory muscles. Which initial step is most appropriate before any imaging or biopsy?

  1. Await CT imaging to define tumor extent
  2. Perform direct laryngoscopy with biopsy without airway planning
  3. Secure the airway with tracheostomy or intubation under controlled conditions Correct answer.
  4. Begin definitive chemoradiation immediately

Explanation

Impending airway obstruction from a laryngeal tumor is an emergency; the airway must be secured first, often with awake tracheostomy or controlled intubation, before diagnostic or therapeutic procedures. Manipulation of an obstructed larynx can precipitate complete obstruction.

Question 32Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

Which statement best describes the pathophysiology of otosclerosis?

  1. Endolymphatic hydrops with rupture of Reissner membrane
  2. Ossicular necrosis caused by chronic bacterial infection
  3. Degeneration of the spiral ganglion with secondary demyelination of the cochlear nerve
  4. Abnormal bone remodeling with fixation of the stapes footplate at the oval window Correct answer.

Explanation

Otosclerosis is characterized by abnormal remodeling of the otic capsule, producing fixation of the stapes footplate and a conductive hearing loss. It may also involve the cochlea, producing sensorineural components.

Question 33Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

A patient undergoes total thyroidectomy and develops perioral numbness and carpopedal spasm on the first postoperative day. Which laboratory finding is most likely?

  1. Elevated serum calcium with low phosphate
  2. Elevated serum calcitonin
  3. Low serum calcium with elevated phosphate Correct answer.
  4. Low serum thyroxine with elevated TSH

Explanation

Post-thyroidectomy hypocalcemia from parathyroid injury produces low calcium with elevated phosphate; hypoparathyroidism removes PTH-driven phosphate excretion. Symptoms include perioral paresthesia, Chvostek and Trousseau signs, and carpopedal spasm.

Question 34Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

Which nerve is most at risk during ligation of the inferior thyroid artery close to the thyroid gland, and what deficit would result from its injury?

  1. Recurrent laryngeal nerve; vocal cord paralysis Correct answer.
  2. Glossopharyngeal nerve; loss of gag reflex
  3. External branch of the superior laryngeal nerve; loss of pitch elevation
  4. Hypoglossal nerve; tongue deviation

Explanation

The recurrent laryngeal nerve has a variable relationship to the inferior thyroid artery and is at risk during ligation; unilateral injury causes vocal cord paralysis and hoarseness. The external branch of the superior laryngeal nerve is at risk near the superior pole vessels instead.

Question 35Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

A 25-year-old presents with sudden unilateral hearing loss and a normal otoscopic examination. Which finding on pure-tone audiometry is most consistent with idiopathic sudden sensorineural hearing loss?

  1. Low-frequency conductive loss with a normal tympanogram
  2. Normal pure-tone thresholds with absent acoustic reflexes
  3. Air-bone gap of 30 dB across all frequencies
  4. Sensorineural loss of at least 30 dB across three contiguous frequencies Correct answer.

Explanation

Idiopathic sudden sensorineural hearing loss is defined by sensorineural loss of 30 dB or more over at least three contiguous frequencies developing within 72 hours. An air-bone gap indicates conductive pathology.

Question 36Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

Which finding on flexible nasendoscopy most strongly suggests a nasopharyngeal carcinoma in a patient with unilateral nasal obstruction and a neck mass?

  1. An irregular fleshy mass in the fossa of Rosenmuller Correct answer.
  2. Bilateral choanal narrowing by adenoid hypertrophy
  3. Diffuse erythema of the adenoid pad
  4. A smooth translucent cyst in the nasopharynx

Explanation

Nasopharyngeal carcinoma classically arises in the fossa of Rosenmuller and appears as an irregular or ulcerated mass, often with a metastatic level II neck node. Smooth cysts suggest retention cysts, and diffuse adenoid tissue suggests benign hypertrophy.

Question 37Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

A 70-year-old with chronic obstructive pulmonary disease and a T2 glottic carcinoma is being counseled about treatment options. Which statement is most accurate regarding endoscopic laser resection versus open partial laryngectomy?

  1. Laser resection generally offers similar oncologic control with shorter hospitalization and better swallowing preservation for selected early tumors Correct answer.
  2. Laser resection is contraindicated in any patient with a history of smoking
  3. Open partial laryngectomy has a lower local recurrence rate for all T2 tumors
  4. Open partial laryngectomy is preferred because it avoids the need for tracheostomy in all cases

Explanation

For appropriately selected early glottic cancers, transoral laser microsurgery provides oncologic control comparable to open partial laryngectomy with less morbidity, shorter stay, and better functional preservation. Selection depends on exposure and tumor extent.

Question 38Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

Which of the following best describes the pathway by which a maxillary sinus malignancy most commonly spreads to the orbit?

  1. Via the pterygoid venous plexus directly into the cavernous sinus
  2. Along the Eustachian tube into the middle ear
  3. Through the orbital floor (roof of the maxillary sinus) Correct answer.
  4. Through the cribriform plate into the anterior cranial fossa

Explanation

Maxillary sinus tumors invade the orbit most commonly by destroying the thin orbital floor, producing proptosis, diplopia, or globe displacement. Cribriform plate spread is more typical of ethmoid tumors.

Question 39Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

A 40-year-old presents with a unilateral blood-stained nasal discharge and a reddish mass in the nasal cavity. Which diagnosis should be considered first in an adult with a unilateral vascular nasal mass?

  1. Inverted papilloma or other sinonasal neoplasm Correct answer.
  2. Nasal septal hematoma
  3. Antrochoanal polyp
  4. Allergic rhinitis

Explanation

A unilateral vascular mass with epistaxis in an adult raises concern for a sinonasal neoplasm such as inverted papilloma or squamous cell carcinoma and requires biopsy and imaging. Bilateral inflammatory disease is more typical of allergic rhinitis.

Question 40Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

Which statement correctly describes the anatomy of the sphenopalatine artery and its surgical relevance?

  1. It supplies only the anterior nasal septum and is ligated through the nares
  2. It enters the nasal cavity through the sphenopalatine foramen and is the principal target in endoscopic sphenopalatine artery ligation for posterior epistaxis Correct answer.
  3. It arises from the facial artery and enters through the infraorbital foramen
  4. It is a branch of the ophthalmic artery and enters through the optic canal

Explanation

The sphenopalatine artery, a terminal branch of the maxillary artery, passes through the sphenopalatine foramen and supplies much of the posterior nasal cavity; its ligation is used for refractory posterior epistaxis.

Question 41Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

A 5-year-old has a unilateral foul-smelling nasal discharge that has persisted for weeks despite antibiotics. Which diagnosis should be suspected?

  1. A foreign body lodged in the nasal cavity Correct answer.
  2. Juvenile nasopharyngeal angiofibroma
  3. Allergic fungal rhinosinusitis
  4. Choanal atresia

Explanation

Unilateral purulent, foul-smelling rhinorrhea in a child is a classic presentation of a retained nasal foreign body, and examination of the nasal cavity is diagnostic. Bilateral symptoms and chronicity favor other diagnoses.

Question 42Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

Which statement about the lymphatic drainage of the nasopharynx is most accurate?

  1. It drains only to the submental nodes
  2. It drains primarily to the retropharyngeal and level II nodes, so nasopharyngeal carcinoma often presents with a neck mass Correct answer.
  3. It has no lymphatic drainage and spreads only by direct extension
  4. It drains directly to the axillary nodes

Explanation

The nasopharynx is richly supplied with lymphatics draining to retropharyngeal and upper deep cervical (level II) nodes, which is why nasopharyngeal carcinoma frequently presents with painless upper neck adenopathy.

Question 43Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

A patient with a history of recurrent tonsillitis is scheduled for tonsillectomy. Which criterion is generally accepted as an indication for surgery?

  1. A single episode of tonsillitis in the past year
  2. A single episode of peritonsillar abscess
  3. Seven episodes in one year, five per year for two years, or three per year for three years Correct answer.
  4. Any history of sore throat with fever

Explanation

The Paradise criteria for recurrent throat infection require at least seven episodes in one year, five per year for two years, or three per year for three years, with associated features. A single episode is not an indication.

Question 44Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

Which complication of adenoidectomy is most directly related to incomplete hemostasis at the surgical bed?

  1. Grisel syndrome
  2. Eustachian tube dysfunction
  3. Primary hemorrhage from the adenoid fossa in the immediate postoperative period Correct answer.
  4. Velopharyngeal insufficiency

Explanation

Bleeding from the adenoid bed is the most direct hemorrhagic complication and results from incomplete hemostasis. Velopharyngeal insufficiency and Grisel syndrome are recognized but less directly related to hemostasis.

Question 45Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

A 3-year-old with recurrent acute otitis media has bilateral otitis media with effusion persisting for four months with a 30 dB conductive hearing loss. Which is the most appropriate next step?

  1. Observation for another six months without intervention
  2. Long-term prophylactic antibiotics for one year
  3. Insertion of tympanostomy tubes with or without adenoidectomy Correct answer.
  4. Immediate cortical mastoidectomy

Explanation

Persistent bilateral otitis media with effusion for three months or more with documented hearing loss is an indication for tympanostomy tube placement, often with adenoidectomy in older children. Prolonged antibiotics are not recommended for prophylaxis because of resistance.

Question 46Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

Which statement best explains why a patient with a large vestibular aqueduct may develop progressive sensorineural hearing loss after minor head trauma?

  1. The aqueduct is the site of endolymph production and is destroyed by trauma
  2. The enlarged aqueduct transmits pressure changes and cerebrospinal fluid pulses to the inner ear Correct answer.
  3. The aqueduct carries the facial nerve and is injured by trauma
  4. The aqueduct directly connects the middle ear to the cochlea

Explanation

An enlarged vestibular aqueduct transmits intracranial pressure fluctuations and CSF pulses to the inner ear, which can cause stepwise or progressive sensorineural hearing loss, often after minor trauma. It does not connect the middle ear or carry the facial nerve.

Question 47Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

A patient with a history of chronic suppurative otitis media presents with facial nerve palsy and a cholesteatoma on examination. Which management step is most appropriate?

  1. Oral antibiotics and outpatient follow-up in six weeks
  2. Radiotherapy to the temporal bone
  3. Observation until the palsy resolves spontaneously
  4. Urgent surgical exploration and mastoidectomy with facial nerve decompression as indicated Correct answer.

Explanation

Facial palsy complicating cholesteatoma is an urgent indication for surgical exploration and mastoidectomy to remove disease and decompress the nerve. Delay risks permanent facial nerve injury.

Question 48Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

Which statement about the pathophysiology of noise-induced hearing loss is most accurate?

  1. It affects the apical turn first, producing low-frequency loss
  2. It causes a conductive loss by stiffening the tympanic membrane
  3. It primarily damages the outer hair cells of the basal turn of the cochlea, producing a notch at 4 kHz Correct answer.
  4. It spares the cochlea and affects only the central auditory pathways

Explanation

Noise-induced hearing loss classically damages outer hair cells in the basal turn, producing a 3-6 kHz notch, typically around 4 kHz, with relative sparing of lower frequencies. It is sensorineural, not conductive.

Question 49Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

A patient presents with unilateral facial weakness that spares the forehead. Which additional finding would most suggest a central rather than peripheral cause?

  1. Hyperacusis in the affected ear
  2. Inability to close the eye on the affected side
  3. Ipsilateral loss of taste over the anterior tongue
  4. Ipsilateral limb weakness Correct answer.

Explanation

Central facial palsy typically spares the forehead because the upper face receives bilateral cortical innervation, and it is often accompanied by ipsilateral limb weakness from a contralateral cortical or capsular lesion. Taste loss and hyperacusis indicate peripheral facial nerve involvement.

Question 50Otorhinolaryngology – Head and Neck Surgery (theoretical knowledge, Part I written exam)

Which structure is most commonly injured during a superficial parotidectomy, producing a transient weakness of the lower lip depressors?

  1. Great auricular nerve
  2. Auriculotemporal nerve
  3. Marginal mandibular branch of the facial nerve Correct answer.
  4. Hypoglossal nerve

Explanation

The marginal mandibular branch of the facial nerve runs near the inferior border of the mandible and is at risk during superficial parotidectomy, causing weakness of the depressors of the lower lip. The great auricular nerve is sensory and does not cause motor weakness.