Although endoscopic submucosal dissection (ESD) is widely performed for the resection of superficial gastrointestinal neoplasms, performing ESD for jejunal lesions is challenging because of the thin muscularis propria and inaccessibility or insufficient scope maneuverability around the lesion. Thus, few reports of ESD for jejunal lesions have been published [1]. Here, we report the case of a large jejunal laterally spreading tumor nongranular type (LST-NG) that was successfully treated with ESD ([Video 1]).
Video 1 Endoscopic submucosal dissection for a large jejunal lesion.
A 62-year-old woman with familial adenomatous polyposis had a 50-mm LST located on the afferent loop of the jejunum after pyloric ring-preserving pancreaticoduodenectomy ([Fig. 1 a, b]). Surgery was expected to be difficult because of multiple previous abdominal surgeries. Therefore, in order to reduce the risk of local recurrence associated with piecemeal resection, we chose ESD for en bloc resection.
Fig. 1 Endoscopic images showing a laterally spreading tumor in the proximal jejunum after pyloric ring-preserving pancreaticoduodenectomy. a In white light. b In chromoendoscopy using indigo carmine. c Mucosal incision. d Submucosal dissection. e Clip-with-line method to provide countertraction. f Large mucosal defect. g The resected specimen in white light. h Endoscopic closure using endoloop and endoclips. i Follow-up endoscopy 3 months after endoscopic submucosal dissection.
ESD was performed using a gastroscope and ESD knives (DualKnife J and HookKnife J; Olympus, Tokyo, Japan). As the approach to the lesion faced the vertical direction, the HookKnife J was used for careful dissection ([Fig. 1 c, d]), and the clip-with-line method [2] was used for countertraction-facilitated resection ([Fig. 1 e]). En bloc resection was achieved without any adverse events ([Fig. 1 f, g]). The large mucosal defect was completely closed using endoloop and endoclips to prevent delayed bleeding and perforation ([Fig. 1 h]). Histopathological findings revealed an adenoma ([Fig. 2]). Follow-up esophagogastroduodenoscopy performed 3 months after ESD showed no evidence of local recurrence ([Fig. 1 i]).
Fig. 2 Histological examination of the resected specimen using hematoxylin and eosin stain. a The distribution of the lesion. Pink lines indicate low grade adenoma. b Low power magnified area of adenoma showing tubular growth. c High power magnified area of adenoma showing columnar cells with basal elongated nuclei.
Although the indications for ESD of the jejunum have not been determined, the European Society of Gastrointestinal Endoscopy guidelines recommend that large LST-NG in the colon be treated with ESD [3]. In our case, ESD of the LST-NG in the jejunum was performed following the guidelines for ESD of LST-NG in the colon, and the clip-with-line method and HookKnife J were effective in this difficult situation.
Endoscopy_UCTN_Code_CCL_1AB_2AZ_3AB
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