647 ClInICal CaSe Rev Chil Pediatr. 2017;88(5):647-651 DOI: 10.4067/S0370-41062017000500012 Chagasic Cardiopathy in a child: Case report Cardiopatía Chagásica en un escolar. Reporte de caso Nina Méndez-Domínguez a , Claudia Chi-Méndez b , Jorge Canto-Losa a , Adriana Peniche-Echazarreta a , Juan P. Canto-Losa a , Salvador Gómez-Carro c a Marista University of Merida, Health Sciences Campus b Department of Health Sciences and Human ecology of the University Center of the South Coast. University of guadalajara c general Hospital “Dr. agustín O’Horán”. Merida, Yucatan, Mexico Received: 12-09-2016; accepted: 26-12-2016 Correspondence: nina Méndez-Domínguez ninuxka@hotmail.com Keywords: Chagas Cardiomyopathy; Trypanosoma cruzi; Chagas Disease; Cardiomegaly Abstract Introduction: Chagas disease also known as American Trypanosomiasis is mainly caused by hae- matophagous insects widely distributed from Mexico to Argentina. According to the Panamerican Health Organization, 7.7 to 10 million people are living with chronic infection. Chagas disease is caused by Trypanosoma cruzi, a protozoan transmitted by triatomine vectors. After an initial acu- te phase, Chagas is followed by a silent phase that lasts 15-20 years before debuting with cardiac, neurological or gastrointestinal manifestations. Objective: To analyze the atypical clinical course of chagasic cardiopathy in a pediatric patient from southern Mexico. Case report: The patient was treated by a chagoma in his left leg. Five months later an electrocardiogram showed evidence of sinus tachycardia and left atrium distension with P wave enlargement and prolonged QT interval. The thorax radiography showed cardiomegaly (Cardio-thoracic index = 0.52); the trans-thoracic echocardiogram showed left atrial and ventricular dilation. Conclusion: It is important to develop early cardiac evaluations even in pediatric patients with Chagas disease, it should not be assumed that the patients will undergo a long asymptomatic phase or that they will not develop an early cardiopathy.