spindle cell (squamous) carcinoma (carcinosarcoma, sarcomatoid carcinoma)
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Introduction
A malignant neoplasm of spindle cells probably a poorly differentiated squamous cell carcinoma. It containins elements of both carcinoma & sarcoma (derived from both epithelial & mesenchymal tissue). Corresponds to carcinosarcoma; with sarcomatous transformation of carcinoma cells.