Geçirilmesi Cutaneous Carcinosarcoma : A Case Report and Review of The Theories on

Carcinosarcoma has been reported in various sites, such as the lung, uterus, breast, bladder, and salivary glands (1-6). Primary carcinosarcoma of the skin is very rare. To the best of our knowledge, almost 50 cases have been reported to date in English in the literature. The disease is defined by two different malignant components (7). In the reported cases, the epithelial component was basal cell carcinoma, squamous cell carcinoma, or adnexal carcinoma of the skin, such as porocarcinoma, trichilemmal cystic carcinoma, and spiradenocarcinoma (8-10). The mesenchymal component was osteosarcoma, chondrosarcoma, fibrosarcoma, or malignant fibrous histiocytoma (7-14). Carcinosarcomas at extracutaneous sites are characteristically aggressive tumours. Cutaneous basal cell carcinoma is an indolent tumour, but sarcomatoid transformation would increase the aggressive potential of the tumour.