CT ABDOMEN WITH CONTRAST AND CT PELVIS WITH CONTRAST,REASON FOR EXAM: , Generalized abdominal pain with swelling at the site of the ileostomy.,TECHNIQUE:,  Axial CT images of the abdomen and pelvis were obtained utilizing 100 mL of Isovue-300.,CT ABDOMEN:  ,The liver, spleen, pancreas, adrenal glands, and kidneys are unremarkable.  Punctate calcifications in the gallbladder lumen likely represent a gallstone.,CT PELVIS:  ,Postsurgical changes of a left lower quadrant ileostomy are again seen.  There is no evidence for an obstruction.  A partial colectomy and diverting ileostomy is seen within the right lower quadrant.  The previously seen 3.4 cm subcutaneous fluid collection has resolved.  Within the left lower quadrant, a 3.4 cm x 2.5 cm loculated fluid collection has not significantly changed.  This is adjacent to the anastomosis site and a pelvic abscess cannot be excluded.  No obstruction is seen.  The appendix is not clearly visualized.  The urinary bladder is unremarkable.,IMPRESSION:,1.  Resolution of the previously seen subcutaneous fluid collection.,2.  Left pelvic 3.4 cm fluid collection has not significantly changed in size or appearance.  These findings may be due to a pelvic abscess.,3.  Right lower quadrant ileostomy has not significantly changed.,4.  Cholelithiasis.gastroenterology, axial ct images, isovue-300, ct pelvis, ct abdomen, fluid collection, abdomen, obstruction, subcutaneous, abscess, pelvic, fluid, collection, pelvis, ileostomy, ct, isovue,