Laparoscopic resection of an adrenal pseudocyst mimicking a retroperitoneal mucinous cystic neoplasm

Figure 1 An abdominal computed tomography scan showing a 9 cm well-defined cystic lesion, which abuts the spleen, kidney and pancreas tail.

Figure 2 Magnetic resonance imaging of the abdomen. A low signal intensity cystic mass on the T1-weighted image (A) and a high signal intensity cystic mass on the T2-weighted image (B).

Figure 3 Placement of the laparoscopic trocar and operative ports. A 12-mm trocar was placed in the periumbilical region, and three other operating ports were placed in the abdomen (arrows). The photograph was taken eight months after surgery.

Figure 4 Gross appearance of the 6 cm × 3 cm × 3 cm adrenal cystic lesions. The cystic lesion adheres to adrenal gland tissue.

Figure 5 Histopathology showing an adrenal pseudocyst (a) and adrenal tissue remnants on the upper aspect (b). The cyst wall is composed of a thick layer of hyalinized connective tissue without an epithelial or endothelial lining (a). HE staining (Original magnification, × 40).