References
- Lee HR, Lennon VA, Camilleri M, Prather CM. Paraneoplastic gastrointestinal motor dysfunction: clinical and laboratory characteristics. Am J Gastroenterol 2001;96:373-379. https://doi.org/10.1111/j.1572-0241.2001.03454.x
- Gockel I, Eckardt VF, Schmitt T, Junginger T. Pseudoachalasia: a case series and analysis of the literature. Scand J Gastroenterol 2005;40:378-385. https://doi.org/10.1080/00365520510012118
- Lee TH, Cho JY. Sonographic evaluation of esophageal achalasia. Korean J Intern Med 2014;29:262. https://doi.org/10.3904/kjim.2014.29.2.262
- Tucker HJ, Snape WJ Jr, Cohen S. Achalasia secondary to carcinoma: manometric and clinical features. Ann Intern Med 1978;89:315-318. https://doi.org/10.7326/0003-4819-89-3-315
- Katzka DA, Farrugia G, Arora AS. Achalasia secondary to neoplasia: a disease with a changing differential diagnosis. Dis Esophagus 2012;25:331-336. https://doi.org/10.1111/j.1442-2050.2011.01266.x