Turban tumor is?

Ans is 'c' i.e. Cutaneous cylindroma * In dermatologic pathology, a dermal cylindroma, also dermal eccrine cylindroma) and (less specifically) cylindroma, is a benign adnexal tumor, which occurs on the scalp and forehead.* Multiple cylindromas may grow together in a uhat-like" configuration, sometimes referred to as a turban tumor.