CC BY-NC-ND 4.0 · Endosc Int Open 2024; 12(04): E532-E534
DOI: 10.1055/a-2272-1012

Tao Dong

1   Digestive Endoscopy Center, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China (Ringgold ID: RIN375808)

,

Hanying Wang

1   Digestive Endoscopy Center, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China (Ringgold ID: RIN375808)

,

Lin Jing

1   Digestive Endoscopy Center, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China (Ringgold ID: RIN375808)

,

Xuan Zhou

1   Digestive Endoscopy Center, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China (Ringgold ID: RIN375808)

,

Yaohui Wang

2   Department of Pathology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China (Ringgold ID: RIN375808)

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Jun Xiao

1   Digestive Endoscopy Center, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China (Ringgold ID: RIN375808)

Adequate submucosal exposure and visibility are vital for effective and safe endoscopic submucosal dissection (ESD) [1]. For lesions located on the gravitational side, the mucosal flap tends to collapse as the dissection proceeds which hinders subsequent operation [2]. Position change for gravity assistance is usually preferred in this circumstance, but not always applicable [3]. In this case, we present use of the water pressure method (WPM) to facilitate ESD of a rectal tumor on the gravitational side close to the dentate line ([Video 1]).