FIGURE 9.

Mesenteric cyst. Grey scale ultrasound image (a) of the abdomen in a 26-year-old female reveal a well-defined thin walled unilocular anechoic cystic lesion (asterisks) showing posterior acoustic enhancement in the mesentery. No evidence of internal septations, calcification, mural nodule or internal vascularity noted. Axial contrast enhanced CT image of the abdomen (b) shows a well-defined thin walled unilocular cystic lesion (asterisks) anterior to lower pole of left kidney. Coronal reformatted contrast enhanced CT image (c) shows a well-defined unilocular cystic lesion (asterisks) in the left lumbar and iliac region displacing the descending colon medially (white arrow). Photomicrograph of the histopathological specimen (d) reveals the cyst wall lined by flattened and mucin secreting tall columnar epithelium. There is no atypia, mitosis or necrosis.