59-year-old woman with history of ulcerative colitis status post total colectomy and ileostomy, now with right-sided pain and fluid collection on CT. ABDOMEN:LIVER, BILIARY TRACT: The liver and gallbladder appear normal. There is no intra or extrahepatic biliary duct dilatation.SPLEEN: Spleen appears normal.PANCREAS: Pancreas is normal.ADRENAL GLANDS: The adrenal glands are normal.KIDNEYS, URETERS: There is a subcentimeter right lower pole renal cyst and the calyces are mildly prominent. Otherwise, the kidneys are normal.RETROPERITONEUM, LYMPH NODES: No significant lymphadenopathy noted.BOWEL, MESENTERY: The patient is status post total colectomy with a right lower quadrant ostomy. There is a ventral hernia containing loops of bowel without evidence of incarceration.In the right lower quadrant adjacent to the ileum (series 18, image 33), there is a 48 x 48 mm multilobulated collection which enhances peripherally and demonstrates restricted diffusion. This collection abuts the right psoas muscle and extends superiorly, abutting the right lobe of the liver. The walls of the adjacent small bowel loops are mildly increased in enhancement suggesting inflammation, however no tract is seen extending to the bowel lumen.Mildly prominent lymph nodes are seen at the root of the mesentery, likely reactive.BONES, SOFT TISSUES: No significant abnormality noted.OTHER: No significant abnormality noted.
Right lower quadrant abscess as described above. Finding was discussed with Dr. MIKOLAJCZYK by phone at 13:34 on 10/28/2015.