What is "cylindroma"

A variant of eccrine spiradenoma which can be multiple on the scalp and can coalesce to form a 'Turban' tumour. In pathology, a cylindroma is a tumour with nests of cells that resemble a cylinder in cross section.

Types include:

• Dermal eccrine cylindroma, a benign tumour of the skin
• Adenoid cystic carcinoma, a malignant tumour of the salivary gland