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  • Title: Effect of route of preoperative biopsy on endoscopic submucosal dissection for patients with early gastric cancer.
    Author: Jiang H, Tu HM, Qiao Q, Xu KB, Li J, Qi XW, Ge XS.
    Journal: Asian Pac J Cancer Prev; 2014; 15(20):8917-21. PubMed ID: 25374229.
    Abstract:
    OBJECTIVE: To observe and compare the effects of multi-patch biopsy under conventional white light imaging endoscopy (C-WLI) and precise targeted biopsy under magnifying narrow-band imaging endoscopy (M-NBI) on the endoscopic submucosal dissection (ESD) of early gastric cancers and intraepithelial neoplasias. METHODS: According to the way of selecting biopsy specimens, patients were divided into C-WLI and M-NBI groups, 20 cases. The ESD operations of the 2 groups were compared quantitively. RESULTS: The mean frequency of biopsy in M-NBI group was (1.00±0.00), obviously lower than in the C-WLI group (4.78±1.02) (P<0.01).The average total number of selected biopsy specimens was also fewer (1.45±0.12 and 7.82±2.22, respectively, P<0.01). There was no significant difference in the time of determining excision extension, marking time and the time of specimen excision of 2 groups during the ESD (P>0.05), whereas submucosal injection time, mucosal dissection time, stopping bleeding time, wound processing time in the M-NBI group were significantly shorter than in the C-WLI group (P<0.01). CONCLUSION: Precise targeted biopsy under M-NBI can obviously shorten the time of ESD operation, with small quantity of tissues but high pathological positive rate.
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