Efficacy and safety of grasping forceps-assisted endoscopic resection for gastric neoplasms: A multi-centre retrospective study.

Background: Endoscopic submucosal dissection (ESD) is widely accepted for early gastric cancer (EGC) without lymph node metastasis, although ESD is challenging, even for small lesions, in the greater curvature (GC) of the upper (U) and middle (M) thirds of the stomach. Grasping forceps-assisted endoscopic resection (GF-ER) is a type of endoscopic mucosal resection that is performed a double-channel endoscope.

Aim: To investigate the safety and efficacy of GF-ER ESD in the GC of the stomach's U and M regions.

Methods: We retrospectively reviewed the medical records of 506 patients who underwent ER of 522 EGC lesions in the stomach's U and M regions in three institutions between January 2016 and May 2020. Nine lesions from eight patients who underwent GF-ER for EGC (the GF-ER group) were compared to 63 lesions from 63 patients who underwent ESD (the ESD group). We also performed a subgroup analysis of small lesions (≤ 10 mm) in 6 patients (7 lesions) from the GF-ER group and 20 patients (20 lesions) from the ESD group.

Results: There were no statistically significant differences between the GF-ER and ESD groups in the resection rates (100% 100%) and the R0 resection rates (100% 98.4%). The median procedure time in the GF-ER group was shorter than that in the ESD group (4.0 min 55.0 min, < 0.01). There were no adverse events in the GF-ER group, although five perforations (8.0%) and 1 case of postoperative bleeding (1.6%) were observed in the ESD group. When we only considered lesions that were ≤ 10 mm, the median procedure time in the GF-ER group was still shorter than that in the ESD group (4.0 min 35.0 min, < 0.01). There were no adverse events in the GF-ER group, although 1 case of perforation (1.6%) were observed in the ESD group.

Conclusion: These findings suggest that GF-ER may be an effective therapeutic option for small lesions in the GC of the stomach's U and M regions.