Reason: eval for right ischioanal fossa abscess tract extent History: right ischioanal fossa abscess seen on CT A, planning surgery vs IR PELVIS:UTERUS, ADNEXA:A 1.8 cm T1 hyperintense lesion in the left adnexa likely represents a hemorrhagic cyst.Fistulous communication from the vagina to a right ischioanal fossa abscess as below.There is a low-lying ID within the lower uterine segment and cervix.BLADDER: No significant abnormality noted.LYMPH NODES:Enlarged right inguinal lymph node measuring 1.8 x 1.4 cm (1501/40). Enlarged right external iliac node measuring 1.3 x 2.1 cm (1501/73).BOWEL, MESENTERY:Fistulous communication from the anal canal to a right ischioanal fossa abscess as below.BONES, SOFT TISSUES: There is a rim-enhancing collection containing debris and air in the right ischioanal fossa measuring 3.8 x 2.1 cm in transverse dimension and 3.6 cm in craniocaudal dimension (601/29, 901/29), likely representing an abscess. This collection extends through the inferior portion of the right puborectalis muscle. There is edema throughout the right puborectalis musculature, likely representing inflammation. An enhancing tract is present from the collection to the anal canal at the 9:00 position (1501/48), There is an additional tract extending from the collection to the right aspect of the vagina (1501/55)OTHER: Small amount of free fluid in the pelvis.
1.Abscess in the right ischioanal fossa with fistulous communication to the anal canal and vagina.2.Pelvic lymphadenopathy is likely reactive.3.Low lying IUD.