Perinephric urinoma, an unusual upper tract presentation of a lower tract injury following retroperitoneoscopy: A case report

Figure 1 Coronal and axial views of computed tomography urography. A: Drains through right upper quadrant and flank directed inferiorly into the pelvis; B: The perinephric urinoma and right flank drain directed posterior to the right kidney.

Figure 2 Antegrade nephrostogram via an upper pole puncture. A: Smooth flow of contrast down an intact ureter into the bladder and up a surgical drain; B: Satisfactory percutaneous nephrostomy position post-procedure.

Figure 3 Intra-operative photographs demonstrating the surgical drain within the bladder (left most), surrounding cystitis (middle) and the site of perforation tracking upwards toward the retroperitoneum (right most).

Figure 4 Cystogram images. A: Contrast instilled through the indwelling urinary catheter travelled up the surgical drain; B: Contrast within the bladder which did not enter the right flank surgical drain.