Fig. 3
From: Giant mucocele of the colon at the distal stump due to low-grade mucinous neoplasia
Neoplastic epithelium in the transitional region between the dilated colon and obstruction (marked with red line). It presented a different structure than common colonic adenoma, with pseudo-stratified nuclei and papillary-proliferating cells with mucin content. Immunohistochemical examination showed no excess expression of TP53. The Ki-67-positive positive rate was similar to the normal mucosa