CBCN common mistakes
CBCN · Understand the traps and how to avoid them.
Labels a patient with a known BRCA1/2 pathogenic variant as average risk because she has no personal history of breast cancer.
Memorizes family-history categories but misses that a known pathogenic variant alone places the patient in a high-risk group.
What to do instead
Use a risk checklist that includes known pathogenic variant, prior chest radiation, prior atypical biopsy or LCIS, and family history; assign high risk when any high-risk criterion is present.
For a 45-year-old with a new palpable breast mass, recommends returning in 1 year for routine screening mammography.
Substitutes the average-risk screening schedule for diagnostic triage of a symptom.
What to do instead
Treat a palpable mass as diagnostic: diagnostic mammography and ultrasound with biopsy as indicated, not a routine screening interval.
Stages a 3-cm breast tumor with two mobile ipsilateral axillary nodes as stage I because the tumor is small.
Uses tumor size alone and ignores the nodal category.
What to do instead
Assign stage from the full TNM system; any nodal involvement upstages, and clinical stage must be distinguished from pathologic stage.
Uses a single 5-HT3 antagonist as the only prophylaxis for a highly emetogenic chemotherapy regimen.
Memorizes one antiemetic rather than matching prophylaxis to the regimen’s emetogenic risk.
What to do instead
Match antiemetic prophylaxis to emetogenicity: for highly emetogenic regimens use an NK1 antagonist plus a 5-HT3 antagonist plus dexamethasone, with olanzapine added when appropriate.
Continues trastuzumab or an anthracycline without baseline or serial left ventricular ejection fraction assessment.
Focuses on infusion reactions and misses cumulative cardiotoxicity.
What to do instead
Obtain baseline LVEF and monitor per protocol; track anthracycline cumulative dose and hold or refer when cardiac function declines.
Tells every patient with an axillary dissection that blood pressure and venipuncture must never be performed on the affected arm, even in an emergency.
Overgeneralizes a risk-reduction precaution into an absolute prohibition.
What to do instead
Teach individualized lymphedema risk reduction; do not delay necessary emergency procedures, and screen for swelling, heaviness, and infection.
Advises a patient on chemotherapy with fever of 38.3°C to take oral antibiotics and recheck tomorrow.
Treats fever as a routine infection and underestimates neutropenic sepsis as an emergency.
What to do instead
Treat as an emergency: urgent CBC with ANC, cultures, and empiric broad-spectrum IV antibiotics within 60 minutes; do not delay antibiotics for results.
Completes pretreatment teaching for a young woman receiving gonadotoxic chemotherapy without discussing fertility preservation or making a referral.
Prioritizes regimen and side-effect teaching over fertility and psychosocial concerns.
What to do instead
Ask about fertility goals before gonadotoxic therapy, refer urgently for fertility preservation, and document the discussion.
Orders annual tumor markers and bone scans for an asymptomatic patient who has completed treatment for early breast cancer.
Confuses post-treatment surveillance with monitoring treatment response.
What to do instead
Use history, physical examination, and mammography for routine surveillance; order imaging or tumor markers only for symptoms or protocol, and provide a survivorship care plan.
Assumes radiology or surgery will notify the patient of a BI-RADS 4 biopsy result and does not confirm follow-up.
Role ambiguity and lack of closed-loop result tracking.
What to do instead
Track abnormal results through a closed-loop system: confirm patient notification, referral scheduling, and documented follow-up.