Posthysterectomy pelvic abscess on CT scan

(A) An axial CT scan through the pelvis following hysterectomy shows a large gas-containing (arrows) infected hematoma (arrow heads) in the postoperative bed.
(B) Image B is a coronal reconstruction and shows the abscess (between arrowheads) above the bladder (asterisk). Gas is noted in the abscess (arrows).
(C) Image C is a sagittal reconstruction of the CT scan and shows the abscess (between arrowheads) above the vagina (arrow).
(D) Image D shows a percutaneous pigtail drainage catheter (arrow) in the decompressed abscess (between arrowheads).