Microcystic adnexal carcinoma: successful management of a large scalp lesion.

Microcystic adnexal carcinoma (MAC) is a rare, malignant cutaneous neoplasm. It is important for us to become more aware of it, as it is often misdiagnosed, either clinically or histopathologically. We report a case of an extensive scalp lesion that was successfully treated using a combination of resection and adjuvant radiotherapy.