PMC4704422_01
Abdominal computed tomography (CT) scan. CT scan revealed lower intestinal obstruction with a thickened bowel wall in the terminal ileum (solid yellow arrow in (a) and upper sigmoid colon (feint yellow arrow in (b). Abdominal magnetic resonance (MR) revealed a thickened bowel wall in the terminal ileum (solid yellow arrow in (c) and upper sigmoid colon (feint yellow arrow in d). MR imaging also showed an unremarkable uterus stump (solid yellow arrow in e)
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Fig1
Abdominal contrasted computed tomography (CT) showed intestinal obstruction with a thickened bowel wall in the terminal ileum and upper sigmoid colon (Fig. 1a, b). Abdominal magnetic resonance imaging (MRI) indicated the same result (Fig. 1c, d) and an unremarkable uterus stump (Fig. 1e).
Colonoscopy and biopsy. Colonoscopy confirmed that the intestinal mucosa was smooth without ulcers or lumps (a) except sigmoid colon luminal narrowing (b). Pathology result of the narrowing site biopsy showed mucosal chronic inflammation (c)
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Fig2
Colonoscopy showed a narrowed sigmoid colon lumen with smooth mucosa, and the pathological results indicated mucosal chronic inflammation (Fig. 2).
Postoperative pathological examination. Microscopic examination of the intestinal tumor demonstrated a full-thickness wall of sigmoid colon and serosa, and the muscular layer of the terminal ileum had metastatic squamous cell carcinoma. Cancer embolus was seen in the vessel, and the peri-intestine lymph node also had metastatic squamous cell carcinoma. a small intestine and b sigmoid colon (staining with hematoxylin and eosin, x100 magnification)
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Fig3
The postoperative pathological diagnosis showed squamous cell carcinoma (Fig. 3).