Abstract
A 86-year-old female was admitted with a complaint of dysphagia for two months duration. Ba-swallow revealed a well-defined elevated tumor in the Im and Ei portions of esophagus. On endoscopy examination, polypoid lesion with irregular and partly erosive surface was noted and it occupied the most of esophageal lumen. Under the diagnosis of esophageal sarcoma, operation was performed. The resected specimen showed a polypoid lesion with superficial roughness in various sizes and was 7.0 × 4.0 × 2.2 cm in size. Histologically, the tumor was predominantly composed sarcomotous spindle cells in a bundle crossing each other, and moderately differentiated squamous-cell carcinoma was irregularly arranged in the area adjacent to the base of tumor (mp). Electron microscopically, the sarcomatous spindle cells, characterized by large nucleus and well-developed rough endoplasmic reticulum, were connected to each other, mainly at the border of their prosesses. A few cells possessed poorly defined demosome-like attachments without tonofila-ments, but the cell had no typical epithelial characteristics. Based on these findings, we diagnosed this tumor as carcinosarcoma of the esophagus.
