[Malignant acrospiroma with "zoster-like" clinical expression]

The diagnostic category "malignant acrospiroma" includes acrosiryngeal-derived sweat gland malignant neoplasms. Many terms are usually employed to indicate different histologic types of such tumours, lacking a definitive classification. We describe a patient suffering from malignant acrospiroma (malignant poroma) with unusual clinico-evolutive presentation.