3Gockel I,Eckardt V F,Schmitt T,et al.Pseudoachalasia:a case series and analysis of the literature[J].Scand J Gastroenterol,2005,40(4):378-385.
4Kahrilas P J,Kishk S M,Helm J F,et al.Comparison of pseudoachalasia and achalasia[J].Am J Med,1987,82(3):439-446.
5Liu W,Fackler W,Rice T W,et al.The pathogenesis of pseudoachalasia:a clinicopathologic study of 13 cases of a rare entity[J].Am J Surg Pathol,2002,26(6):784-788.
6Dodds W J,Stewart E T,Kishk S M,et al.Radiologic amyl nitrite test for distinguishing pseudoachalasia from idiopathic achalasia[J].Am J Roentgenol,1986,146(1):21-23.
7Dent J,Chir B.A new technique for continuous sphincter pressure measurement[J].Gastroenterology,1976,71(2):263-267.
8Van Dam J, Falk GW, Sivak MV Jr,et al. Endosonographie evaluation of the patient with aehalasia: appearance of the esophagus using the eehoendoscope. Endoscopy, 1995,27: 185-190.
9Deviere J, Dunham F, Rickaert F, et al. Endoscopic ultrasonography in achalasia. Gastroenterology, 1989, 96: 1210-1213.
10Ziegler K, Sanft C, Friedrieh M, et al. Endosonographic appearance of the esophagus in aehalasia. Endoscopy, 1990, 22:1-4.