From the case: Perianal fistula

Ultrasound

Transvaginal view

Sag view.  Air tr...
Longitudinal
Sag view. Air tract communicating anal canal and fistula
Modality: Ultrasound (Longitudinal)

- “ A non-branching fistula is noted to join the anal canal at 7  o'clock. No abscess. Surgery - Transphicteric fistula. ”

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