PMC9972503_01
Computed tomography view of the mesenteric cyst
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FIG1
An abdominal CT scan showed a large well-defined cystic lesion (8.5 x 6.5 cm) with a peripherally enhancing wall seen in the right upper quadrant compressing the second part of the duodenum and exerting a mass effect on the adjacent large bowel loops, mainly at the hepatic flexure (Figure 1).
Intra-operative image showing a 9 x 9 cm cyst (black arrow) attached to and compressing parts of the duodenum and transverse colon mesentery (white arrow)
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FIG2
Surgical resection of the cyst necessitated partial resection of about 8 cm of transverse colon with side-to-side anastomosis due to the adherent nature of the cyst to the colon and its mesentery (Figure 2).
H&E-stained sections display a fibrous wall infiltrated by chronic inflammatory cells; lymphoid aggregates in the lumen show macrophages
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FIG3
No malignancy was present, and separate mature well-vascularized fatty tissue was also present (Figure 3).