PMC4601971_01
Abdominal CT revealed an 18- x 36-mm tumor,in the ileocecal region (white arrow).
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CT revealed an 18- x 36-mm tumor in the ileocecal region (Fig. 1). Colonoscopy revealed an approximately 40-mm-diameter SMT in the ileocecal region.
Colonoscopy revealed a submucosal tumor in the ileocecal region. It was difficult to insert the endoscope to the mouth side of the tumor. The orifice of the diverticulum was not found.
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The orifice of the diverticulum in this region was not identified (Fig. 2).
The submucosal tumor was located in the ileocecal region. There was no continuity between the proximal edge of the appendix and the tumor.
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The tumor was located in the cecum, and there was no continuity between the tumor and appendix (Fig. 3).
Macroscopic view of the resected specimen shows the submucosal tumor, which measured 35 x 30 mm, in the ileocecal region (arrow). The tumor was not continuous with the appendix.
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The resected tumor measured 35 x 30 mm and was located in the ileocecal region; it was not continuous with the appendix (Fig. 4).
(A) Loupe image. The cystic mass was present with mucinous collection in the muscularis propria. (B) The colonic lamia propria curved within the muscularis propria; therefore, this fistula was considered to be a cecal diverticulum. There was continuity in the colonic lamia propria of the surface and the muscularis propria. The orifice of the diverticulum was present on the surface of the colonic lamia propria (arrow), therefore it was considered to be cecal diverticulum. (C) Although epithelial neoplastic transformation was evident in the wall of the cystic mass as shown by cells exhibiting increased nuclear size and chromatin, these malignant cells were not present in the cystic tumor.
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These histological features were consistent with a low-grade mucinous neoplasm (Fig. 5).