Female 31 years old Reason: Characterization of retroperitoneal mass History: None associated ABDOMEN:LIVER, BILIARY TRACT: Liver is normal in morphology. Subcentimeter T2 hyperintense focus in the left lateral segment of the liver shows no central enhancement and may represent a small cyst.SPLEEN: No significant abnormality noted.PANCREAS: Pancreas is normal in morphology and signal. Pancreatic duct is normal in caliber.ADRENAL GLANDS: No significant abnormality noted.KIDNEYS, URETERS: The kidneys are normal in morphology. No hydronephrosis.RETROPERITONEUM, LYMPH NODES: There is a T2 hyperintense retroperitoneal mass centered in the aortocaval region but primarily over the IVC. It measures 5.3 x 4.2 cm (image 47/series 5). There is brisk enhancement with areas of central necrosis.Along its anterior aspect it abuts the ileum and portion of transverse colon. Along its posterior aspect, it abuts the IVC and aorta. The right ureter passes along its right posterior lateral margin. Along its medial aspect it abuts the superior mesenteric vein.Along its lateral aspect it abuts the small bowel. There are small left para-aortic lymph nodes.Its superior margin terminates inferior to the uncinate process of the pancreas.BOWEL, MESENTERY: No bowel obstruction.BONES, SOFT TISSUES: Mild body wall anasarca.OTHER: Right adnexal cyst. Small cervical nabothian cysts.
1.Findings of the retroperitoneal mass anterior to the IVC. Differential considerations include extra adrenal pheochromocytoma, paraganglioma, spindle cell neoplasm and tumor of nerve cell origin. Dimensions of the mass and regional extension as detailed above.2.No definite evidence of metastatic disease in the upper abdomen.