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Fig. 3 | Surgical Case Reports

Fig. 3

From: Transperineal total mesorectal excision for rectal cancer on the residual rectum after multiple abdominal surgeries in a patient with Crohn’s disease: a case report

Fig. 3

Pathological findings. a Resected specimen. White arrowheads show the tumor at the residual rectum. b Pathological examination of the rectal tumor with hematoxylin and eosin staining (× 40 and × 200). The depth of tumor invasion was pathologically diagnosed as T2. Columnar cells with hyperchromatic nuclei proliferating in tubular patterns were seen. Focal non-glandular irregular nests were also observed. The pathological diagnosis was well- to moderately differentiated adenocarcinoma with foci of a poorly differentiated component. MP: muscularis propria. c Pathological examination of the resected residual rectum with hematoxylin and eosin staining (× 40 and × 200). At low magnification, mononuclear cells (white arrow) were found to have migrated into the submucosal layer. At high magnification, noncaseous epithelioid cell granulomas (black arrowhead) and multinucleated giant cells (black arrow) were seen. These findings are typical pathological observations in patients with Crohn’s disease

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