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12.02.2019

Clinical outcomes of endoscopic resection for non-ampullary duodenal laterally spreading tumors

Zeitschrift:
Surgical Endoscopy
Autoren:
Jiale Zou, Ningli Chai, Enqiang Linghu, Yaqi Zhai, Zhenjuan Li, Chen Du, Longsong Li
Wichtige Hinweise
Jiale Zou and Ningli Chai have contributed equally to this work.
Jiale Zou and Ningli Chai are co-first authors.

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Abstract

Background and aims

Non-ampullary duodenal laterally spreading tumors (NAD-LSTs) mimic the morphological features and natural history of colorectal LSTs, even achieving a large size but lacking invasive behavior; thus, they are suited for endoscopic resection (ER). At present, the endoscopic therapeutic approach in NAD-LSTs has not been clearly established. The aim of this study was to evaluate the efficacy and safety of ER for NAD-LSTs and to evaluate the risk factors for delayed perforation after ER of NAD-LSTs.

Patients and methods

A total of 54 patients with 54 NAD-LSTs treated with ER at the Chinese PLA General Hospital between January 2007 and January 2018 were retrospectively analyzed. Data on patient demographic, clinicopathological characteristics of the lesions, outcomes of ER, and results of follow-up endoscopies were collected.

Results

The mean (SD) lesion size was 26.9 mm (8.5). Endoscopic mucosal resection (EMR) was performed in 21 lesions, and endoscopic submucosal dissection (ESD) was performed in 33 lesions. R0 resection was achieved in 93.9% of the ESD group and 38.1% of the EMR group (p = 0.000). Delayed bleeding was noted in two patients. Delayed perforation was identified in four patients. The incidence of delayed perforation showed a significant association with post-ampullary tumor location (p = 0.030). Follow-up endoscopy was performed in all cases with a mean (SD) period of 22.1 months (8.2), and local recurrence was identified in four cases after piecemeal EMR.

Conclusions

ER of NAD-LSTs is a feasible and less invasive treatment. However, ER of NAD-LSTs is associated with serious adverse events such as delayed perforation, especially in patients with lesions located distal to Vater’s ampulla.

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