A rare malignant neoplasm thought to be a variant of melanoma. It occurs in fascia and tendon sheaths, principally in the lower extremities. It does not typically occur concurrently with a primary skin melanoma. It most commonly manifests as a painless mass. Clear cell sarcoma most commonly occurs in women aged 20-40. It is treated with varying combinations of surgical excision, chemotherapy, and radiation. Clear cell sarcoma frequently recurs and metastasizes.