CT
Small intersphincteric perianal fistula with several small gas locules.
Gas in the subcutaneous fat along the perineum on the left, and the left groin around an inguinal hernia, continuing into the left scrotal sac around the testis. Fat stranding and thickened skin in the groin, scrotum and perineum.
Incidental sigmoid colon diverticula.
Contrast-enhanced CT at the portal phase did not include most of the scrotum, so the radiologist requested a repeat CT (shown here). This accounts for the concentrated contrast material in the ureters and urinary bladder.