Three-dimensional transperianal and transvaginal sonography in diagnostics of anal canal stenosis

Aim: The aim of our study was to estimate the feasibility and usefulness of transperianal and transvaginal ultrasound with 3D micro-convex endorectal probe in evaluation of patients with anal canal stenosis. Methods: We examined five patients (4 men-with transperianal 3D ultrasound, 1 woman-with transvaginal 3D ultrasound) with stenosis of anal canal that made endoanal ultrasound impossible: three patients with organic stenosis (postradiotherapy because of prostate cancer, posttraumatic, tumoral), one patient with functional stenosis because of chronic anal fissure and one patient with mixed stenosis (fissure an…