![]() ![]() Atypical duct formation and cribriform pattern can be seen. The two largest polyps are 13 mm × 8 mm and 11 mm × 4 mm in size, respectively (arrows) B: Well to moderately differentiated adenocarcinoma (HE, × 20). ![]() A cancer, 2.8 cm × 3.8 cm in size, and multiple small polyps are seen. There was no lymph node metastasis.Ī: Resected ascending colon. The adenocarcinoma showed a fusion to a small adenoma-like and a hyperplastic polyp components in the margins (Figure (Figure4C 4C and D). The tumor infiltrated the muscular layer and reached the subserosa without serosal exposure (Figure (Figure4B). The cancer was a well to moderately differentiated adenocarcinoma with atypical duct formation and a cribriform pattern. The two largest polyps were 13 mm × 8 mm and 11 mm × 4 mm in size (Figure (Figure4A). The resected colon was found to have a cancer of 2.8 cm × 3.8 cm in size and multiple small polyps. The patient was diagnosed as having adenocarcinoma pathologically and underwent laparoscopic right colectomy and cholecystectomy. ![]() On colonoscopy, an ulcerative lesion with localized infiltration was seen in the proximal part of the ascending colon (Figure (Figure3). Six months later, the patient complained of constipation and abdominal fullness. The other polyp located in the sigmoid colon was a high-grade serrated adenoma having a papillary or serrated structure with atypical cells and an atypical structure, such as fusion of the tubular structure (Figure (Figure2D). One of the polyps in the ascending colon was biopsied and diagnosed as a hyperplastic polyp with serrated structure without atypia (Figure (Figure2C). On colonoscopy, some polyps and a diverticulum were seen in the sigmoid colon, and there were some polyps in the ascending colon. There is no evidence of malignancy.Īt the age of 82 years, the patient developed melena. Atypical structures, such as fusion of the tubular structure, are also shown. Papillary or serrated structures with obvious atypical cells are seen. The inflammatory infiltration is mainly composed of lymphocytes in the lamina propria D: High-grade serrated adenoma located in the sigmoid colon (HE, × 200). Serrated ducts with no atypical features are observed. Serrated ducts with no atypical features are observed C: Hyperplastic polyp located in the ascending colon (HE, × 100). The lesion shows duct proliferation and cells that have mild nuclear atypia B: Hyperplastic polyp located in the transverse colon (HE, × 200). Based on the histology of the small polyps located around the adenocarcinoma, there were 5 hyperplastic polyps in which the proliferating epithelial cells had a serrated appearance (Figure (Figure1C) 1C) and a hyperplastic nodule without significant histological changes.Ī: Tubular adenoma located in the transverse colon (HE, × 100). Mild vascular invasion and a lymph node metastasis were detected. Histologically, the tumor was a well-differentiated adenocarcinoma with papillary and tubular proliferation invading the subserosal layer (Figure (Figure1B). There were also multiple small polyps in the resected sigmoid colon (Figure (Figure1A). The adenocarcinoma showed ulcer formation with localized infiltrative growth. She was diagnosed as having adenocarcinoma of the sigmoid colon by pathological examination of a biopsy specimen, and underwent sigmoidectomy. She developed an ileus at the age of 80 years. The patient was an 82-year-old, hypertensive, Japanese woman with a previous history of cardiac angina and a gallstone. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |