A Nonhealing Lateral Tongue Ulcer

The features that make this lesion malignant until proven otherwise:

• Site: lateral border of the tongue and floor of mouth - the highest-risk mucosal sites for squamous cell carcinoma in a tobacco and alcohol user.
• Duration: nine weeks is far beyond the 10–14 days expected for a traumatic or aphthous ulcer.
• Induration with rolled, everted margins: the classic description of an infiltrating carcinoma, not of an inflammatory ulcer.
• Absence of a cause: no sharp tooth, no restoration, no denture border - a traumatic ulcer without trauma is not traumatic.
• A prior white patch at the same site that was never biopsied: a premalignant lesion that was allowed to progress.
• A firm, nontender submandibular node and deviation of the tongue on protrusion suggest regional metastasis and hypoglossal (CN XII) involvement respectively.

A trial of antifungal or steroid therapy is a diagnostic trap: candidiasis and lichen planus are painful and multifocal, and a two-week trial creates delay in a disease where stage at diagnosis drives survival. Any ulcer persisting beyond two weeks with these features needs a tissue diagnosis, not a prescription.

Incisional biopsy under local anesthesia, taken from the periphery of the lesion including a margin of clinically normal mucosa, deep enough to include the epithelium-connective tissue interface and underlying muscle if indicated.

Why not the alternatives

• Avoid the necrotic center. It yields only necrotic debris and inflammatory slough and can under-stage the lesion.
• Excisional biopsy is inappropriate for a 2 cm lesion. You cannot guarantee a clear margin, and you would violate the tumor bed, complicating later definitive resection and potentially seeding the field. Excision is reasonable only for small, clearly benign lesions.
• Brush cytology or fine-needle sampling of the mucosa is inadequate as a primary diagnostic tool: a negative result does not exclude carcinoma, and it cannot assess depth of invasion or grade.
• Fine-needle aspiration is for the neck node, not the primary, and only after the primary is addressed.

Do not delay referral for imaging. He needs contrast CT or MRI of the neck for nodal staging, and the biopsy should be coordinated with the head and neck service so that the specimen can be oriented and the results used for treatment planning. Note also that a lateral tongue primary is not an HPV-driven oropharyngeal cancer; it behaves and is staged differently, which affects the information he is given.

First-echelon drainage of the oral tongue is to levels I and II - the submental and submandibular nodes and the upper jugular nodes, with level II being the most commonly involved. Because the tongue has rich bilateral lymphatic crossover at the midline, a lesion approaching or crossing the midline can drain to the contralateral neck; this one is lateralized, so the ipsilateral neck is at primary risk.

This matters for three reasons:

1. A palpable, firm node converts a clinically N0 neck into a pathologically involved neck, which changes management from observation or elective neck dissection to therapeutic neck dissection, usually followed by adjuvant radiation or chemoradiation based on extracapsular spread and margin status.
2. Stage drives survival. Nodal involvement is the single strongest adverse prognostic factor in oral squamous cell carcinoma; a node larger than 3 cm, multiple involved nodes, or extracapsular spread each lower survival substantially.
3. Occult disease is common. Even with a clinically negative neck, elective dissection or sentinel node biopsy is often indicated for tumors beyond a certain depth of invasion, because microscopic metastases are present in a substantial minority.

The nodal findings here, together with a 2 cm primary fixed to deep tissue, mean he should be referred for multidisciplinary evaluation now rather than after a period of local wound care.