History of retroperitoneal liposarcoma. Follow-up exam. ABDOMEN:LIVER, BILIARY TRACT: The liver is normal in morphology. There is minimal diffuse parenchymal signal loss in the out of phase images which suggest mild hepatic steatosis. No focal lesion. No intrahepatic or extra hepatic biliary ductal dilatation.SPLEEN: No significant abnormality noted.PANCREAS: No significant abnormality noted.ADRENAL GLANDS: No significant abnormality noted.KIDNEYS, URETERS: No significant abnormality noted.RETROPERITONEUM, LYMPH NODES: Throughout the retroperitoneum and there is abnormal curvilinear increased T2 signal and postcontrast enhancement extending from the level of the duodenal sweep down into the pelvis, right greater than left. There are more focal nodular/masslike components. This includes a mass immediately anterior to the infrarenal aorta which measures 6.4 x 2.7 cm (series 1705 image 165). There is an additional large enhancing mass lesion anterior to the left psoas muscle (series 1/9/2001 image 145), which measures 7.5 x 3.8 cm. There is a smaller nodule anterolateral to the right psoas muscle measuring 1.9 x 2.0 cm (series 1704 image 29). The abnormal signal and enhancement extends down into the right hemipelvis compatible with additional tumor involvement.BOWEL, MESENTERY: Postoperative changes from an end to side anastomosis in the descending colon.BONES, SOFT TISSUES: Diastases of the rectus muscles.OTHER: No significant abnormality noted.PELVIS:PROSTATE/SEMINAL VESICLES: No significant abnormality noted.BLADDER: No significant abnormality noted.LYMPH NODES: No pelvic lymphadenopathy.BOWEL, MESENTERY: Post surgical changes in the rectosigmoid colon and tumor extension into the pelvis as described above.BONES, SOFT TISSUES: Fat-containing right inguinal hernia.OTHER: No significant abnormality noted.
Extensive retroperitoneal tumor involvement extending from the level of the duodenal sweep into the right and left hemipelvis as described. This includes both masslike lesions as well as poorly defined, sheet-like stranding and enhancement throughout the retroperitoneal fat compatible with more infiltrative tumor.