Pathology · single question
A patient has a white lesion on the floor of the mouth that cannot be wiped off, without ulceration. What is the most likely diagnosis?
Show answer and explanation
Correct answer: A. Squamous cell carcinoma (SCC)
- A. CORRECT. A persistent, non-wipeable white lesion on the high-risk floor of the mouth raises strong concern for SCC and warrants biopsy.
- B. INCORRECT. White sponge nevus is bilateral, spongy, and present from a young age.
- C. INCORRECT. Lichen planus usually shows lacy striae, often bilaterally on the buccal mucosa.
- D. INCORRECT. Candidiasis (pseudomembranous) typically wipes off.