All are true about achalasia except (not related -pathology): (A) Dilatation of proximal segment, (B) It predisposes to malignancy, (C) Body peristalsis is normal, (D) LES pressure is increased
Answer is C. Destruction of the nerves to LES is primary pathology and degeneration of neuromuscular function of the body of esophagus is secondary. Absence of body peristalsis and poor LES relaxation is mandatory for diagnosis.