Pathology · single question
Flat dark brown mucosa lesion near premolars; no amalgam visible on radiograph. Which is NOT in the differential?
Show answer and explanation
Correct answer: B. Sebaceous cyst
SEBACEOUS CYST = raised, pale/yellowish nodule — NOT a flat dark mucosal pigmentation. Flat dark mucosal pigmentation differential: amalgam tattoo (particles may be too small for radiograph), melanoma, melanotic macule, physiologic pigmentation, Peutz-Jeghers, Addison's.