Peroxide-Enhanced 3-Dimensional Endovaginal Ultrasound Imaging for Diagnosis of Rectovaginal Fistula

Abstract

A 36-year-old woman with history of ulcerative colitis, status post-ileoanal J-pouch anastomosis, and total proctocolectomy presented with leakage of stool from her vagina. The fistula tract could not be fully visualized directly or identified on endoanal ultrasonography, but was diagnosed by peroxide-enhanced endovaginal ultrasound.The use of peroxide-enhancement while performing 3-dimensional endovaginal sonographic imaging may be of benefit to patients with rectovaginal fistulas that cannot be fully evaluated by physical examination or more typical use of endoanal ultrasonography.

Comparison of the Diagnostic Accuracy of Percutaneous Fistula Contrast-Enhanced Ultrasound Combined with Transrectal 360° 3-D Imaging and Conventional Transrectal Ultrasound in Complex Anal Fistula

“…On the other hand, it was ensured that enough contrast agent was flowing into the internal orifices which then could be detected. Second, our study was different from some previous studies (Pascual Miguelanez et al 2005;Denson and Shobeiri 2014) that used hydrogen peroxide as a contrast agent.…”