A large left-sided retroperitoneal multispatial multicystic mass is noted measuring 17 × 24 x 33 cm in AP, SS and CC dimensions respectively. It is involving the retroperitoneal regions of the lower half and the left side of the abdomen. It shows homogenous density with soft tissue density (mean 45 HU). No evidence of post-contrast enhancement with preserved mean density.
The lesion extends cephalocaudally from the undersurface of the left diaphragmatic cupola to the paravesical space and Douglas pouch. It is completely encasing the left kidney, left renal pedicle and the left adrenal gland. It is abutting the spleen, pancreas, uterus, urinary bladder, bowel loops, both ureters, right psoas, aorta and iliac vessels. The mass is pushing the bowel loops towards the right side and superiorly. It pushes the uterus to the right side and is displacing the left kidney and adrenal gland anteriorly. No vascular compromise.