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Effect of submucosal tunneling endoscopic resection for submucosal tumors at esophagogastric junction and risk factors for failure of en bloc resection

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Abstract

Background and aims

Most submucosal tumors (SMTs) in the esophagogastric junction (EGJ) are irregularly shaped and different from those in the esophagus, where submucosal tunneling endoscopic resection (STER) has been proven effective and safe. However, few reports paid attention to STER for SMTs in the EGJ. The aim of the study was not only to evaluate the effect of STER in patients with SMTs in the EGJ but to analyze the risk factors for failure of en bloc resection.

Methods

A consecutive of 47 patients with SMTs originating from the muscularis propria (MP) layer in the EGJ underwent STER were retrospectively included between September 2012 and December 2016. Thirty-five tumors underwent en bloc resection, and the other 12 tumors received piecemeal resection. The tumor size, operation time, en bloc resection rate, complications, residual, and local recurrence were achieved and compared between the two groups.

Results

Forty-six of 47 lesions (97.9%) were successfully resected. The mean lesion size was 29.7 ± 16.3 mm. Both the en bloc resection rate and complete resection rate were 74.5% (35/47). No severe complications occurred in the 47 patients. Patients in the piecemeal resection group had more irregularly shaped lesions, longer tumor diameter, larger tumor size (≥40 mm), longer operation time, and longer hospital stay after procedure (P < 0.05), and there were no statistically differences between the two groups in in-operative complications, post-operative complications, and residual rate (P > 0.05). By univariate analysis and stepwise logistic regression analysis, irregular shape and tumor diameter ≥20 mm were two risk factors for failure of en bloc resection.

Conclusions

STER is an effective and safe technique for the treatment of SMTs arising from the MP layer in the EGJ. Irregular shape and tumor diameter ≥20 mm are the reliable risk factors for en bloc resection failure.

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Acknowledgement

This study was supported by research grants from two Chinese People’s Liberation Army General Hospital Clinical Researches (2012FC-TSYS-3035 and YS201404).

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Authors and Affiliations

  1. Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, 28 Fuxing Road, Haidian District, Beijing, 100853, China

    Zhenjuan Li, Ying Gao, Ningli Chai, Ying Xiong, Lianjun Ma, Wengang Zhang, Chen Du & Enqiang Linghu

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  1. Zhenjuan Li
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  2. Ying Gao
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Correspondence to Enqiang Linghu.

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Zhenjuan Li, Ying Gao, Ningli Chai, Ying Xiong, Lianjun Ma, Wengang Zhang, Chen Du and Enqiang Linghu have no conflicts of interest or financial ties to disclose.

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Li, Z., Gao, Y., Chai, N. et al. Effect of submucosal tunneling endoscopic resection for submucosal tumors at esophagogastric junction and risk factors for failure of en bloc resection. Surg Endosc 32, 1326–1335 (2018). https://doi.org/10.1007/s00464-017-5810-8

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