Which of the following is associated with destruction of myenteric plexus?: (A) Hirschsprung disease, (B) Secondary Achalasia, (C) HPSS, (D) GIST
Answer is B. 12 Ans. is 'b' i.e., Secondary achlasia * Secondary achalasia may arise in Chagas disease, in which Trypanosoma cruzi infection causes destruction of the myenteric plexus, failure of peristalsis, and esophageal dilatation.