PMC6294057_01
Colonoscopy.. Notes: (A) Hepatic flexure of colon malignant lesions; (B) rectal malignant lesions; (C, D) a large number of colorectal polyps.
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Colonoscopy revealed several rectal and colorectal polyps, as well as ~60 cm of colon protuberant lesions (Figure 2).
Surgical specimens.. Notes: (A) Malignant tumor found in the hepatic flexure of the colon; (B) a large number of polyps were found in the rest of the colon and rectum; (C) malignant tumor found in the rectum.
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The remainder of the colon and rectum were covered with polyps (0.2-1.5 cm in diameter) (Figure 3).
Histopathology.. Notes: (A, B) Carcinoma infiltrating the serosa, with ulcerative moderately differentiated adenocarcinoma; (C-E) a tubular-villous adenoma colonic polyp; (F) lymph node metastasis. Scale bar 100 mum; magnification x400.
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Lymph node metastases around the mesentery were seen in four cases (4/27) (Figure 4).