Laparoscopic endoscopic cooperative surgery (LECS) refers to the endoscopic dissection of the mucosal or submucosal layers with laparoscopic seromuscular resection. We recommend a treatment algorithm for the LECS procedure for gastric benign tumors according to the protruding type. In the exophytic type, endoscopic-assisted wedge resection can be performed. In the endophytic type, endoscopic-assisted wedge resection of the anterior wall is relatively easy to perform, and endoscopic-assisted transgastric resection, laparoscopic-assisted intragastric surgery, or single-incision intragastric resection in the posterior wall and esophagogastric junction (EG Jx) can be attempted. We propose an algorithm for the LECS procedure for early gastric cancer according to the tumor location. The endoscopic submucosal dissection (ESD) procedure can be adapted for all areas of the stomach, and single-incision ESD can be performed in the mid to high body and the EG Jx. In full-thickness gastric resection, laparoscopy-assisted endoscopic full-thickness resection can be adapted for the entire area of the stomach, but it cannot be applied to the pyloric and EG Jx. In conclusion, surgeons need to select the LECS procedure according to tumor type, tumor location, the surgeon's individual experience, and the situation of the institution while also considering the advantages and disadvantages of each procedure.

中文翻译：

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用于良性和恶性胃肿瘤的 LECS 程序的选择。

腹腔镜内窥镜合作手术（LECS）是指内镜下切除黏膜或黏膜下层并进行腹腔镜下血清肌肉切除术。我们根据突出类型推荐胃良性肿瘤 LECS 程序的治疗算法。在外生型中，可以进行内窥镜辅助楔形切除术。内生型中，内镜辅助前壁楔形切除术相对容易进行，内镜辅助经胃切除术、腹腔镜辅助胃内手术或后壁及食管胃交界处单切口胃内切除术（EG Jx）可以尝试。我们根据肿瘤位置提出了一种用于早期胃癌的 LECS 程序的算法。内窥镜黏膜下剥离术 (ESD) 手术适用于胃的所有区域，单切口 ESD 可用于中高身和 EG Jx。在全层胃切除术中，腹腔镜辅助内镜全层切除术可适用于胃的整个区域，但不适用于幽门和EG Jx。总之，外科医生需要根据肿瘤类型、肿瘤位置、外科医生的个人经验和机构情况选择LECS手术，同时还要考虑每种手术的优缺点。腹腔镜辅助内镜全层切除可适用于胃的整个区域，但不适用于幽门和EG Jx。总之，外科医生需要根据肿瘤类型、肿瘤位置、外科医生的个人经验和机构情况选择LECS手术，同时还要考虑每种手术的优缺点。腹腔镜辅助内镜全层切除可适用于胃的整个区域，但不适用于幽门和EG Jx。总之，外科医生需要根据肿瘤类型、肿瘤位置、外科医生的个人经验和机构情况选择LECS手术，同时还要考虑每种手术的优缺点。