Childhood acute leukemias are frequent in Mexico City: descriptive epidemiology

BMC Cancer

Research Article

Juan Manuel Mejia-Arangure¹  David Aldebarán Duarte-Rodríguez¹  Paola Hillary Alamilla-Galicia¹  Janet Flores-Lujano¹  María Luisa Pérez-Saldivar¹  Arturo Fajardo-Gutiérrez¹  Manuel Carlos Ortega-Alvarez²  Raquel Amador-Sánchez³  Victoria Bolea-Murga⁴  Martha Alvarado-Ibarra⁵  José de Diego Flores-Chapa⁵  Laura Espinosa-Hernández⁶  Elva Jiménez-Hernández⁶  María de los Ángeles del Campo-Martínez⁶  Rogelio Paredes-Aguilera⁷  María del Carmen Rodríguez-Zepeda⁸  Roberto Bernáldez-Ríos⁸  Elisa María Dorantes-Acosta⁹  Aurora Medina-Sanson⁹  José Gabriel Peñaloza-González^1,10  Martha Margarita Velázquez-Aviña^1,10  Rocío Cárdenas-Cardos^1,11  Armando Martínez-Avalos^1,11  José Refugio Torres-Nava^1,12  Francisco Javier Álvarez-Rodríguez^1,12  Roberto Rivera-Luna^1,13  Vilma Carolina Bekker-Méndez^1,14 

[1] Centro Médico Nacional (CMN) Siglo XXI, Instituto Mexicano de Seguridad Social (IMSS), Unidad de Investigación en Epidemiología Clínica, Unidad Médica de Alta Especialidad UMAE Hospital de Pediatría, México D.F., Mexico;Coordinación de Salud en el Trabajo, CMN Siglo XXI, IMSS, México D.F., Mexico;Hospital General Regional "Carlos McGregor Sánchez Navarro", IMSS, México D.F., Mexico;Hospital General de México, SSa,, México D.F., Mexico;Servicio de Hematología Pediátrica, CMN "20 de Noviembre", Instituto de Seguridad Social al Servicio de los Trabajadores del Estado, México D.F., Mexico;Servicio de Hematología Pediátrica, Hospital General "Gaudencio González Garza", CMN "La Raza", IMSS, México D.F., Mexico;Servicio de Hematología Pediátrica, INP, SSa, México D.F., Mexico;Servicio de Hematología, UMAE Hospital de Pediatría, CMN "Siglo XXI", IMSS, México D.F., Mexico;Servicio de Onco-Hematología, Hospital Infantil de México Federico Gómez, SSa, México D.F., Mexico;Servicio de Onco-Pediatría, Hospital Juárez de México, SSa, México D.F., Mexico;Servicio de Oncología Pediátrica, Instituto Nacional de Pediatría (INP), Secretaría de Salud (SSa), México D.F., Mexico;Servicio de Oncología, Hospital Pediátrico de Moctezuma, Secretaría de Salud del D.F., México D.F., Mexico;Subdirección de Hemato/Oncología, INP, SSa, México D.F., Mexico;Unidad de Investigación Médica en Inmunología e Infectología, Hospital de Infectología Daniel Méndez Hernández, "La Raza" IMSS, México D.F., Mexico;

关键词: Leukemia;    Acute Myeloid Leukemia;    Acute Lymphoblastic Leukemia;    Chronic Myeloid Leukemia;    Acute Leukemia;   

DOI  :  10.1186/1471-2407-11-355

 received in 2011-03-17, accepted in 2011-08-17,  发布年份 2011

来源: Springer

【 摘 要 】

BackgroundWorldwide, acute leukemia is the most common type of childhood cancer. It is particularly common in the Hispanic populations residing in the United States, Costa Rica, and Mexico City. The objective of this study was to determine the incidence of acute leukemia in children who were diagnosed and treated in public hospitals in Mexico City.MethodsIncluded in this study were those children, under 15 years of age and residents of Mexico City, who were diagnosed in 2006 and 2007 with leukemia, as determined by using the International Classification of Childhood Cancer. The average annual incidence rates (AAIR), and the standardized average annual incidence rates (SAAIR) per million children were calculated. We calculated crude, age- and sex-specific incidence rates and adjusted for age by the direct method with the world population as standard. We determined if there were a correlation between the incidence of acute leukemias in the various boroughs of Mexico City and either the number of agricultural hectares, the average number of persons per household, or the municipal human development index for Mexico (used as a reference of socio-economic level).ResultsAlthough a total of 610 new cases of leukemia were registered during 2006-2007, only 228 fit the criteria for inclusion in this study. The overall SAAIR was 57.6 per million children (95% CI, 46.9-68.3); acute lymphoblastic leukemia (ALL) was the most frequent type of leukemia, constituting 85.1% of the cases (SAAIR: 49.5 per million), followed by acute myeloblastic leukemia at 12.3% (SAAIR: 6.9 per million), and chronic myeloid leukemia at 1.7% (SAAIR: 0.9 per million). The 1-4 years age group had the highest SAAIR for ALL (77.7 per million). For cases of ALL, 73.2% had precursor B-cell immunophenotype (SAAIR: 35.8 per million) and 12.4% had T-cell immunophenotype (SAAIR 6.3 per million). The peak ages for ALL were 2-6 years and 8-10 years. More than half the children (58.8%) were classified as high risk. There was a positive correlation between the average number of persons per household and the incidence of the pre-B immunophenotype (Pearson's r, 0.789; P = 0.02).ConclusionsThe frequency of ALL in Mexico City is among the highest in the world, similar to those found for Hispanics in the United States and in Costa Rica.

【 授权许可】

Unknown   
© Pérez-Saldivar et al; licensee BioMed Central Ltd. 2011. This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.