BACKGROUND: We developed a modified method of endoscopic aspiration mucosectomy (m-EAM) which includes the pre-cutting of the peripheral mucosa before aspiration, and which has been employed in this department since 1998. An endoscopic submucosal dissection (ESD), which enables the resection of a larger area of the lesion using newly-developed surgical devices, has also been employed here since March 2003. This study was performed to investigate the efficacy of ESD at the present time by assessing the short-term therapeutic results for the procedure in patients with a preoperative diagnosis of early-stage differentiated gastric mucosal cancer, by tumor diameter, as well as by comparing these results with those obtained previously with m-EAM. PATIENTS AND METHODS: The study included 110 patients with a preoperative diagnosis of early-stage differentiated gastric mucosal cancer (57 underwent m-EAM and 53 received ESD). A comparison was made between these two groups regarding the short-term therapeutic response (en bloc resection rate, curability, complications, and days of postoperative hospitalization) by the tumor diameter. RESULTS: The en bloc resection rate was significantly higher for patients with a tumor measuring 21 mm or larger who underwent ESD in comparison to that for those with a similar tumor size who underwent m-EAM (p<0.05). Complications were reported significantly more frequently in patients treated with ESD for a tumor measuring 11 mm or larger (p<0.05) in comparison those treated with m-EAM. There was no significant difference between the two groups with regard to the curability and the days of postoperative hospitalization. CONCLUSION: This study confirmed the efficacy of the ESD procedure which enables surgeons to perform a more reliable en bloc tumor resection.
BACKGROUND: We developed a modified method of endoscopic aspiration mucosectomy (m-EAM) which includes the pre-cutting of the peripheral mucosa before aspiration, and which has been employed in this department since 1998. An endoscopic submucosal dissection (ESD), which enables the resection of a larger area of the lesion using newly-developed surgical devices, has also been employed here since March 2003. This study was performed to investigate the efficacy of ESD at the present time by assessing the short-term therapeutic results for the procedure in patients with a preoperative diagnosis of early-stage differentiated gastric mucosal cancer, by tumor diameter, as well as by comparing these results with those obtained previously with m-EAM. PATIENTS AND METHODS: The study included 110 patients with a preoperative diagnosis of early-stage differentiated gastric mucosal cancer (57 underwent m-EAM and 53 received ESD). A comparison was made between these two groups regarding the short-term therapeutic response (en bloc resection rate, curability, complications, and days of postoperative hospitalization) by the tumor diameter. RESULTS: The en bloc resection rate was significantly higher for patients with a tumor measuring 21 mm or larger who underwent ESD in comparison to that for those with a similar tumor size who underwent m-EAM (p<0.05). Complications were reported significantly more frequently in patients treated with ESD for a tumor measuring 11 mm or larger (p<0.05) in comparison those treated with m-EAM. There was no significant difference between the two groups with regard to the curability and the days of postoperative hospitalization. CONCLUSION: This study confirmed the efficacy of the ESD procedure which enables surgeons to perform a more reliable en bloc tumor resection.
Authors: Jong Sun Kim; Min Woo Chung; Cho Yun Chung; Hyung Chul Park; Dae Yeul Ryang; Dae Seong Myung; Sung Bum Cho; Wan Sik Lee; Young Eun Joo Journal: Gut Liver Date: 2014-02-24 Impact factor: 4.519