Pathology · single question
Exophytic lesion on the tongue (photo). All are reasonable differential diagnoses EXCEPT:
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Correct answer: A. Schwannoma
- A. Correct — the EXCEPTION. A schwannoma is a deep, submucosal nerve-sheath tumor; it is the odd one out among surface/exophytic lesions.
- B. Incorrect (it IS a valid differential). Papilloma is a common exophytic, often cauliflower-like surface growth.
- C. Incorrect (valid differential). Irritation fibroma is a common firm exophytic nodule.
- D. Incorrect (valid differential). Verruca vulgaris is a papillary surface lesion that can occur intraorally.