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Pseudosarcoma of the esophagus (polypoid carcinoma of esophagus with pseudosarcomatous features)

A case of pseudosarcoma, a rare polypoid tumor of the esophagus with a favorable prognosis, is reported. This is believed to be the sixth case to be reported in the English medical literature. The characteristic gross, microscopic, and clinical features as well as a brief discussion of the origin and morphogenesis of the sarcomatous (sarcoma‐like) elements of the tumor are presented. Attempts are also made to distinguish this rather unique lesion from the relatively more common and more malignant‐behaving “carcinosarcoma” of the esophagus. The patient, after a successful esophagectomy with end‐to‐end anastomosis, is physically well and without any symptoms of recurrence to date (17 months postoperative).