PMC8214887_01
Timeline summarizing major events of the case.
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The patient has a surgical history of ovarian cyst removal (Figure 1).
X-ray gastrografin enema. Results showed ahaustral mucosal appearance of the sigmoid and descending colon (red arrows).
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At our institution, an X-ray gastrografin enema was performed, showing ahaustral mucosal appearance of the sigmoid and descending colon (Figure 2).
MRI defecography. Findings were suggestive of tricompartmental pelvic floor prolapse, moderate size anterior rectocele, and grade 2 sigmoidocele.
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MRI defecography was also done with findings suggestive of tricompartmental pelvic floor prolapse, moderate size anterior rectocele, and grade 2 sigmoidocele (Figure 3).
Gross examination of the sigmoid colon. A - Broad-based diverticulum is seen in the sigmoid colon likely presenting a tubular duplicated colon that shares a common opening with the sigmoid colon; B - Gross pathologic examination of the resected segment of the sigmoid colon shows a longitudinal outpouching located at 4.3 cm away from the closest resection margin, making a 30-degree angle with the sigmoid colon segment, and measuring 7.3 cm in length and 2.6 cm in average diameter (scale bar = 5 cm); C and D - The colon segment is opened to reveal tan pink mucosa with appropriate colonic mucosal folds in both the sigmoid colon and colonic duplication segments (scale bars = 5 cm).
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Microscopic examination using H&E stain. Histopathologic examination of the resected tubular colonic duplication demonstrates an intestinal wall containing all three layers (mucosa, submucosa, and serosa; true diverticulum) with well-formed smooth muscle layer (star) and mucosal lymphoid aggregates that extend to the submucosa (black arrows). Microscopic images were examined at 2.5x objective.
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On microscopic examination, the intestinal wall of the duplication contained all three layers (true diverticulum) with mucosal lymphoid aggregates that extended to the submucosa (Figure 5).