Abstract
Background and study aims
Synchronous multiple gastric cancers have been reported in up to 14% of patients, but few efforts have been made to optimize techniques for detection of multiple neoplasms. We sought to evaluate whether the length of endoscopic examination before endoscopic resection affected the detection rates of synchronous gastric neoplasms.
Patients and methods
Among patients referred for endoscopic treatment of gastric neoplasms (n = 1,017), we enrolled those in whom at least one other synchronous neoplasm was found during pre-resection endoscopy or during the 1-year follow-up examination. Pre-resection endoscopic examination time was compared between those in whom multiple neoplasms were completely diagnosed before resection (complete examination group) and those in whom multiple neoplasms were not fully diagnosed prior to resection but were found during follow-up evaluation (incomplete examination group).
Results
Eighty-three patients were included in the study. We found no significant difference in any of the multiplicity, location, gross appearance, size, or resection type of primary lesion between the complete (n = 46) and incomplete examination (n = 37) groups. The complete examination group had a significantly longer examination time compared to the incomplete examination group (6.5 ± 2.4 min vs. 3.8 ± 1.8 min, respectively; P < 0.001). The synchronous lesions most commonly presented as the flat type (42/94 lesions, 45%) and were smaller than the primary lesions (10.0 ± 7.4 mm vs. 14.3 ± 9.1 mm, respectively; P = 0.002).
Conclusions
Endoscopists should consider the possibility of synchronous gastric neoplasms and examine the whole stomach, thus allowing adequate time to reduce the risk of missed lesions.
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Acknowledgements
This research was supported by the National Research Foundation of Korea grant funded by the Ministry of Science, ICT & Future Planning (NRF-2016R1C1B2015185 and NRF-2013R1A1A2007985) and by the program of Global Research and Development Center through the National Research Foundation of Korea funded by the Ministry of Science, ICT and Future Planning (NRF-2011-0031644).
Author contributions
HHL and JMP designed and initiated the study, acquired the data, analyzed the results of the statistical analyses, and wrote the paper. SBY, CHL, JSK, YKC, BIL, YSC, and MGC acquired the data, analyzed the data and revised the paper.
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All authors, Han Hee Lee, Jae Myung Park, Chul-Hyun Lim, Jin Su Kim, Yu Kyung Cho, and Myung-Gyu Choi have no conflict of interest or any potential benefit in any form of a commercial party related directly or indirectly to the subject of the manuscript.
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Lee, H.H., Park, J.M., Lim, CH. et al. The impact of pre-resection endoscopic examination time on the rate of synchronous gastric neoplasms missed during endoscopic treatment. Surg Endosc 31, 3952–3960 (2017). https://doi.org/10.1007/s00464-017-5428-x
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DOI: https://doi.org/10.1007/s00464-017-5428-x