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Radial-scanning flexible EUS of the anorectum and pelvis

1 Department of Hepatology, Institute of Liver and Biliary Sciences, New Delhi, India
2 Department of Endoscopy, Aichi Cancer Center Hospital, Nagoya, Japan
3 Department of Hepatobiliary and Pancreatic Oncology, National Cancer Center, Tokyo, Japan

Correspondence Address:
Vikram Bhatia,
Department of Hepatology, Institute of Liver and Biliary Sciences, New Delhi
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/eus.eus_33_19

PMID: 31249168

Standard upper gastrointestinal flexible radial EUS probes are well suited for imaging of anorectum and pelvic pathologies. They offer multiple advantages over conventional rigid rectal probes. The current transducers allow imaging at variable frequencies and are Doppler capable. The flexible shaft of the endoscope and optics allow easy probe insertion to upper sigmoid. Flexible radial EUS probes allow evaluation of anal sphincter complex, rectosigmoid mural pathologies, and paraluminal pelvic disorders. A thorough understanding of pelvic anatomy and image orientation is the key to appropriate image interpretation. In this review, we describe the principles and methodology for anorectal EUS imaging using a flexible radial EUS probe.

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