Clear cell sarcoma of the foot. A case report.

A case report is presented describing a clear cell sarcoma of the foot (malignant melanoma of soft parts). Melanoma is most commonly associated with pigmented lesions and nodules of the skin. Clear cell sarcoma (CCS) is an anaplastic tumor consisting of cells derived from melanoblasts not forming melanin in the skin, but rather mitotic changes more consistent with malignant melanoma in subcutaneous tissue, tendons and aponeuroses. The tumor is very rare and can pose clinical challenges in early diagnosis since the tumor lacks pigment and obvious color changes and can clinically appear as a benign soft tissue tumor. A case report including surgical excision, histologic features, and survival prognosis is presented.