Case 2

A 40-year-old man presents with a small, nonpainful, mobile nodule on his left lower chest. He has worked as a farmer since the age of 18 and reports that he rarely wears sunscreen. On examination, the cyst is approximately 0.5 cm in diameter and has a central punctum. It is neither tender nor erythematous. The patient states that he does not know when it first appeared, and he only noticed it because the collar of his shirt rubs on it and occasionally causes irritation.

Can you diagnose the condition in Case 2?

A. Dermoid cyst
B. Pilonidal cyst
C. Epidermoid cyst
D. Vellus hair cyst

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