PMC3297042_01
A: Abdominal and pelvic CT scan showing mural thickening of the sigmoid colon with densification of the adjacent mesenteric fat (white arrow) and an increased number of lymph nodes up to 1.0 cm in diameter near the inferior mesenteric vessels; B: Surgical photography showing the inflamed sigmoid; C and D: microscopic exam after hematoxylin-eosin staining showing an extensive lymphoplasmocytic inflammatory infiltrate with collagenic deposition involving the mesenteric adipocytes at 100x (C) and 400x (D) magnifications.
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The patient was then submitted to abdominal and pelvic computed tomography (CT) scans, which revealed a mural thickness in the sigmoid colon with nodular densities in adjacent adipose tissue (Figure 1A). The intraoperative aspect was of a chronic inflammatory lesion affecting the entire mural thickness and adjacent tissues in addition to moderate dilation of the proximal colon (Figure 1B). After hematoxylin-eosin staining, the histopathologic exam revealed extensive lymphoplasmocytic inflammatory infiltrate with collagenic deposition involving the mesenteric adipocytes (Figures 1C and 1D).