In<unk> ologic pathology, a<unk> , also<unk>  eccrine<unk>  or cutaneous<unk>  and (less specifically)<unk> , is a benign adnexal tumor that occurs on the scalp and forehead. Multiple<unk> s may grow together in a "hat-like" configuration, sometimes referred to as a turban tumor.<unk> s are uncommon dysplasias of skin appendages.
Dermal cylindroma
Adenoma sebaceum
Eccrine nevus
Cutaneous columnar cyst
Nevus sebaceous
Hydrocarbon keratosis
Nevus comedonicus
Reactional keratosis