DIFFERENTIAL DIAGNOSIS OF SECONDARY ACHALASIA

Differential diagnosis of secondary achalasia are : 
-radiation therapy
-post vagotomy
-drugs, toxins
-ischemia
-herpes zoster
-Hodgkin's lymphoma
-amyloidosis
-sarcoidosis
-chronic idiopathic 
-intestinal pseudo obstruction 
-non Hodgkin's lymphoma
-Changas disease
-Bronchial carcinoma
-gastric carcinoma
-mesothelioma
​-prostate carcinoma