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Upper border of anal transitional zone: a new landmark for endoscopic internal hemorrhoid therapy

Jingyao Li1, Huiyan Li1, Hao Xu1

  • 1Department of Gastroenterology, The Affiliated Hospital of Northwest University (Xi'an No.3 Hospital), Xi'an, China.

Frontiers in Medicine
|September 18, 2026
PubMed
Abstract

Keywords:
anal transitional zoneendoscopyfree nerve endingsinternal hemorrhoidsrubber band ligationsclerotherapy

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