<prompt> Protozoa associated with Megaesophagus, Megacolon, Romanas sign, chagoma:TrypanosomeAmoebaGiardiaGnathostoma  <response>: Ans. is a i.e., TrypanosomaRef: Chatterjee, 12the, p. 52 Megaesophagus and Megacolon occur as complications of Chronic Chagas disease. T. cruzi causes Chagas disease Romana sign, chagoma also seen. ECG changes like sinus tachycardia, increased PR interval, T wave changes and low QRS voltage, Myocarditis occurs. 