Comment on

• Learning to perform endoscopic resection of esophageal neoplasia is associated with significant complications even within a structured training program.

  van Vilsteren FG, Pouw RE, Herrero LA, Peters FP, Bisschops R, Houben M, Peters FT, Schenk BE, Weusten BL, Visser M, Ten Kate FJ, Fockens P, Schoon EJ, Bergman JJ. van Vilsteren FG, et al. Endoscopy. 2012 Jan;44(1):4-12. doi: 10.1055/s-0031-1291384. Epub 2011 Nov 22. Endoscopy. 2012. PMID: 22109651
• Prevention of esophageal stricture after endoscopic submucosal dissection using tissue-engineered cell sheets.

  Ohki T, Yamato M, Ota M, Takagi R, Murakami D, Kondo M, Sasaki R, Namiki H, Okano T, Yamamoto M. Ohki T, et al. Gastroenterology. 2012 Sep;143(3):582-588.e2. doi: 10.1053/j.gastro.2012.04.050. Epub 2012 May 3. Gastroenterology. 2012. PMID: 22561054
• Local steroid injection into the artificial ulcer created by endoscopic submucosal dissection for gastric cancer: prevention of gastric deformity.

  Mori H, Rafiq K, Kobara H, Fujihara S, Nishiyama N, Kobayashi M, Himoto T, Haba R, Hagiike M, Izuishi K, Okano K, Suzuki Y, Masaki T. Mori H, et al. Endoscopy. 2012 Jul;44(7):641-8. doi: 10.1055/s-0032-1309815. Epub 2012 Jun 13. Endoscopy. 2012. PMID: 22696191 Clinical Trial.
• A prospective comparative study of optical coherence tomography and EUS for tumor staging of superficial esophageal squamous cell carcinoma.

  Hatta W, Uno K, Koike T, Iijima K, Asano N, Imatani A, Shimosegawa T. Hatta W, et al. Gastrointest Endosc. 2012 Sep;76(3):548-55. doi: 10.1016/j.gie.2012.05.012. Gastrointest Endosc. 2012. PMID: 22898413 Clinical Trial.
• Endoscopic submucosal dissection with sentinel node navigation surgery for early gastric cancer.

  Bok GH, Kim YJ, Jin SY, Chun CG, Lee TH, Kim HG, Jeon SR, Cho JY. Bok GH, et al. Endoscopy. 2012 Oct;44(10):953-6. doi: 10.1055/s-0032-1310162. Epub 2012 Sep 17. Endoscopy. 2012. PMID: 22987216