Large enhancing mass, surrounded by urine in the left renal collecting system immmediately adjacent to the nephrostomy tube. An additional similar lesion is present in the distal left ureter.
RIF stoma.
Large volume recurrent colorectal tumour in the left side of the pelvis, invading the distal ureter, bladder and extending to the pelvic side wall. This is adjacent to the origin anastomosis site - the staples can be seen.
Several hepatic metastases.
Note also the enhancing ureteric wall - either tumour extension or due to secondary infection of the renal tract.