case_images: PMC9972503_01
case_images: Computed tomography view of the mesenteric cyst
case_images: cureus-0015-00000034325-i01.jpg
case_images: PMC9972503_01_cureus-0015-00000034325-i01.jpg
case_images: FIG1
case_images: 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).
case_images: 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)
case_images: cureus-0015-00000034325-i02.jpg
case_images: PMC9972503_01_cureus-0015-00000034325-i02.jpg
case_images: FIG2
case_images: 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).
case_images: H&E-stained sections display a fibrous wall infiltrated by chronic inflammatory cells; lymphoid aggregates in the lumen show macrophages
case_images: cureus-0015-00000034325-i03.jpg
case_images: PMC9972503_01_cureus-0015-00000034325-i03.jpg
case_images: FIG3
case_images: No malignancy was present, and separate mature well-vascularized fatty tissue was also present (Figure 3).