We describe 12 cutaneous and soft tissue myoepitheliomas, most of them in elderly patients. Morphologically the cutaneous
and soft tissue myoepitheliomas revealed the same spectrum as their salivary gland counterparts. They were composed of a mixture
of spindle, epithelioid and clear myoepithelial cells. Immunohistochemically they were positive to keratins and S-100 protein
and reacted inconsistently with antibodies to smooth muscle actin. Morphologically they lacked any folliculo-sebaceous or
apocrine differentiation. We believe that they are related to the eccrine type of cutaneous mixed tumours. Most cases had
a benign behaviour, but 1 tumour metastasized, and the patient died of the tumour. Myoepitheliomas of soft tissues should
be distinguished from other neoplasms with epithelial differentiation and from ossifying fibromyxoid tumour of soft parts,
parachordoma and extraskeletal myxoid chondrosarcoma.
Key words Skin - Soft tissues - Myoepithelioma
Received: 6 July 1998 / Accepted: 5 December 1998