A Case of Retroperitoneal Liposarcoma

A 47 year old male presented with lump in the abdomen since 3months, which is insidious in onset, gradually progressive in size. Not associated with pain/vomitings/bowel irregularities. On examination, a large mass of size 26x20cms is noted occupying entire abdomen. No local rise of temperature, non tender, firm in consistency with smooth surface and well defined borders, not moving with respiration. On USG abdomen, a large mass lesion of size 20x 19cm noted occupying the entire abdomen- retroperitoneal origin and causing left mild hydroureteronephrosis. On CECT, it showed large lipid containing heterogenous retroperitoneal mass measuring approx 25x23x20cms involving left ilio-psoas muscle, left ureter with mass effect and left hydroureteronephrosis- likely retroperitoneal liposarcoma. Biopsy confirmed it as liposarcoma.