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Fig. 2 | BMC Medical Imaging

Fig. 2

From: Clinical value of endoluminal ultrasonography in the diagnosis of rectovaginal fistula

Fig. 2

Partial continuity interruption of the external sphincter in the upper outer quadrant observed transrectally using a convex array probe. External sphincter injury with partial disarticulation of the external sphincter in the front upper outer quadrant being observed using a convex array probe, producing a clearer image than that using the linear array probe. The long arrow denotes the partially disarticulated external sphincter. The small arrow denotes the external sphincter. The large arrow denotes the internal sphincter, which is notably thinner than normal

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