3D endoanal ultrasound image of disrupted anal sphincter

3D EAUS axial view of a disrupted anal sphincter. The double asterisks demarcate the torn ends of the external anal sphincter.

3D: three-dimensional; EAUS: endoanal ultrasound; EAS: external anal sphincter; A: anterior; P: posterior; PD: perineal defect; R: right; L: left; PS: pubic symphysis; T: transducer.

Reproduced with permission from Seyed Abbas Shobeiri, MD, FACS, FACOG.

Graphic 114406 Version 1.0

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3D endoanal ultrasound image of disrupted anal sphincter