Reason: pelvic fluid collection History: peri rectal pain PELVIS: UTERUS, ADNEXA: Normal ovaries and uterus.BLADDER: No significant abnormality noted. LYMPH NODES: No significant abnormality noted.BOWEL, MESENTERY: No significant abnormality noted.BONES, SOFT TISSUES: A complex network of fistulae are redemonstrated in the right perianal region, now with seton. Again seen is a 2.9 x 1.9 cm collection in the right ischioanal space (5:66), unchanged. The tract extends approximately 6.6cm caudally from this collection, courses along the right gluteal fold and connects with the anus in the 6:00 position, not significantly changed from prior study.A separate thin tract that extends from the collection above in a caudal direction and crosses the external sphincter previously into a 1.4 x 0.7cm intersphinteric/perirectal collection which is not seen today. However, the tract does still appear to terminate along the posterior wall of the vagina, not significantly changed (5:44). Also, as before, a tract extends from the location of the previously seen 1.4cm collection in a cranial direction and appears to communicate with the anus at the 6/7 oclock position (5:37).Few prominent bilateral internal nodes are enlarged by size criteria.OTHER: No significant abnormality noted.
1.Essentially unchanged/slightly improved complex fistulae, some with setons, as above, including an unchanged 2.9 cm right ischioanal collection. Previously seen 1.4 cm intersphincteric/perirectal collection is not visualized today.