2-year-old female patient with history of a perianal fistula. Question of resolution of infection/abscess and extent of fistula. PELVIS:UTERUS, ADNEXA: No significant abnormality noted.BLADDER: No significant abnormality noted.LYMPH NODES: No significant abnormality noted.BOWEL, MESENTERY: Redemonstration of a tubular structure with more focal rounded, cystic components within the presacral space, some of which demonstrate intrinsic high T1 signal. A fistula is again seen extending from the distal rectum through the right levator ani complex, right ischioanal fossa, and to the right medial gluteal skin surface. This is similar in extent to the prior study, though with decreased surrounding edema type signal near the gluteal fold. There is no associated abscess. No new fistulous connection is identified. BONES, SOFT TISSUES: The right femoral head is irregular in contour and small. The fibrofatty pulvinar in the right acetabulum is larger than the left. OTHER: No significant abnormality noted.
1.Similar extent and appearance of a rectocutaneous fistula without abscess formation.2.Tubular structure within the presacral space is unchanged in appearance and may represent some kind of developmental cyst.3.Probable congenital dysplasia of the right hip.