How would you treat this slowly growing tumor?

A 37-year-old woman seeks medical evaluation of a slow-growing tumor on the side of her foot. She first noted the asymptomatic lesion 6 months ago.

Which of the following would you include in the differential diagnosis?

A. Plantar wart.

B. Squamous cell carcinoma.

C. Intradermal nevus.

D. Neurofibroma.

E. Eccrine poroma.

 Answer - Eccrine poroma

A collarette-encircled, dome-shaped, flesh-colored nodule that protrudes from the sole is the classic presentation of an eccrine poroma, E, a benign tumor of a sweat gland. Plantar warts are flatter and may feature pinpoint bleeding; inflammation is associated with squamous cell carcinoma, which—like an intradermal nevus—is rarely seen at this location; a collarette does not surround a nevus or neurofibroma, which is less firm than an eccrine poroma. n