Atlas of Gastroenterological Endoscopy
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Staging of colon cancer, see table stages of carcinomas.
Sigmoid colon Left flexure
carcinoma carcinoma
Circular proliferating carcinoma of the sigmoid colon. The stenosis canīt be passed by the coloscope. Key- shape carcinoma of the left flexure. The tumor basis is ulcerated.
Rectum Right flexure
Rectal carcinoma Carcinoma right flexura
Severly stenosing rectal carcinoma exophytic in nature. There is absent motility in this intestinal segment. The tumor ist exophytic and severly stenosing. Superficial necrosis is visible on the tumor (lower edge of the picture).
Transverse colon
Carcinoma of the transverse colon Circular proliferating and stenosing  carcinoma of the transverse colon. Histology reveals a trabecular carcinoma.