A variant of eccrine spiradenoma which can be multiple on the scalp and can coalesce to form a 'Turban' tumour. In pathology, a<unk>  is a tumour with nests of cells that resemble a cylinder in cross section. Types include: *Dermal eccrine<unk> , a benign tumour of the skin *Adenoid cystic carcinoma, a malignant tumour of the salivary gland
Cylindroma
Adenoacanthoma
Trichoblastoma
Hamartoma
Thecoma
Syringoma
Dermoid cyst
Apocrine gland carcinoma