case_images: PMC11329964_01
case_images: Ultrasound demonstrated a multicavity formation of cystic masses within the abdominal cavity behind the umbilicus, all interconnected and extending upwards below the epigastrium and downwards to the bladder with entry into the pelvis and extension to the flanks. There are no solid masses or abnormalities of the cyst walls detected. However, a thickened cyst wall is observed in some regions, accompanied by focal calcifications.
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case_images: Ultrasound demonstrated a multi-cavity formation of cystic masses within the abdominal cavity behind the umbilicus, extending upwards to below the chest and downwards to the bladder, pelvis, and flanks (Figure 1).
case_images: Computed tomography scan with contracts revealed a large multicavity cystic mass (see red arrows) involving most of the abdomen and extending into the right and left upper abdomen. (a)-(c) transversal view; (d) coronal view.
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case_images: CT scan with contrast revealed a large multi-cavity cystic mass involving most of the abdomen and extending into the right and left upper abdomen, with multiple scattered wall calcifications predominantly located in the mesenteric root which led to the diagnosis of a mesenteric cyst (Figure 2).
case_images: Intraoperative images representing large multiloculated fused cystic lesions, measuring 25 cm in diameter, originating from the small bowel mesentery.
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case_images: The appendix, which measured 15 cm in length, was also removed (Figure 3).
case_images: Microscopic examination of the serial sections showed a cystic wall that is lined by flattened endothelial cells along with a structure formed by large thick-walled vascular spaces separated by collagen fibers, adipose tissue, bundles of smooth muscle, and small accumulations of lymphocytes. There is no malignancy noted. (a)-(c) 4 x 0.1 (d) 10 x 0.25 (e) 40 x 0.65.
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case_images: Microscopic examination of the cysts confirmed the diagnosis of MCLs (Figure 4).