<prompt> Diffuse esophageal dilatation on barium swallow is seen in a Achlasiab Trypanosomiasisc Etidronate therapyd Sclerodermaacabadbc  <response>: Diffuse esophageal dilatation is seen in -i Primary achalasia Achalasia cardiaii Secondary achalasia Chagas disease trypanosomiasis, MEN, Triple A Allgroves syndrome, cancer invading LES Pseudoachalasia. 