4Brucher BL, Stein HJ, Bartels H, et al. Achalasia and esophageal cancer: incidence, prevalence and prognosis [J]. World J Surg, 2001,25(6) :745.
5Gallez JF, Berger F, Moulinier B, et al . Esophageal adenocarcinoma fallowing Heller myotomy for achalasia[J]. Endoscopy, 1987,19:76.
6Feczko PJ, Mack CK, Halpert RD,et al. Barrett metaplasia and dysplasia in postmyotomy achalasia patients[J]. Am J Gastroenterol, 1983, 78(5): 265.
7Shah AN, Gunby TC. Adinocarcinoma and barrett esophagus following surgically treated achalasia[J]. Gastrointest Endose, 1984, 30:294.
8Sariyamis JL, Mulolard KS. Esophagomyotomy for achalasia of the cardia[J]. Thorax, 1975, 30: 539.
9Meijssen MA, Tilanus HW, M van Blankenstein, et al. Achalasia complicated by esophageal squamous cell carcinoma: a prospective sdudy in 195 patients[J]. Gut, 1992, 33: 155.
10Giuli R, Mccallum RW. Skinner DB. Primary motility disoders of the esophagus [M]. John Libbey Eurotext, Paris, 1991 :566.