<prompt> Protozoa associated with megaesophagusTrypanosomeAmoebaGiardiaGnathostoma  <response>: Megaesophagus and megacolon occur as complications of chronic Chagas disease.T. cruzi causes Chagas disease Chagas disease1. Acute formOccurs in infants and children.Presents with fever, unilateral face swelling, lymphadenopathy, splenomegaly and chagoma Localized swelling of the skin.2. Chronic formOccurs in adolescent and adultsPresents with cardiac arrhythmias and neurological manifestations.Complications megacolon, megaesophagus, cardiomyopathy.Romanas signWhen entry of the parasite is through the conjunctiva, an edematous swelling of eyelids of one eye develops. 