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Carcinosarcoma of the esophagus is a rare malignant neoplasm that consists of both carcinomatous and sarcomatous elements. The histogenesis of the sarcomatous component is generally considered to result from metaplasia of carcinomatous cells toward mesenchymal differentiation. True carcinosarcoma, characterized as a collision between a carcinoma and a sarcoma, is extremely rare. We describe a patient...
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