[National guidelines of diagnosis and treatment of the non-Hodgkin lymphoma]. / Guías nacionales de diagnóstico y tratamiento de linfoma no Hodgkin.

Non-Hodgkin lymphoma comprises a heterogeneous group of haematological malignancies, classified according to their clinic, anatomic-pathological features and, lately, to their molecular biomarkers. Despite the therapeutic advances, nearly half of the patients will die because of this disease. The new diagnostic tools have been the cornerstone to design recent therapy targets, which must be included in the current treatment guidelines of this sort of neoplasms by means of clinical trials and evidence-based medicine. In the face of poor diagnoses devices in most of the Mexican hospitals, we recommend the present diagnose stratification, and treatment guidelines for non-Hodgkin lymphoma, based on evidence. They include the latest and most innovative therapeutic approaches, as well as specific recommendations for hospitals with limited framework and therapy resources.

Molecular characterization of chronic myeloproliferative neoplasias in México.

By using novel molecular markers, it is possible to gain information on both the classification and the pathophysiology of the chronic myeloproliferative neoplasia (MPN). In a group of 36 Mexican mestizo patients with MPN, we studied five molecular markers: The BCR/ABL1 fusion gene, the JAK2 V617F mutation, the JAK2 exon 12 mutations, the MPL W515L mutation and the MPL W515K mutation; 17 patients with essential thrombocythemia (ET), eight with polycythemia vera (PV), four with primary mielofibrosis (MF), five with undifferentiated MPN, one with primary erythrocytosis and one with familial thrombocytosis. Patients with the BCR/ABL1 fusion gene were excluded. Twelve individuals with the JAK2 V617F mutation were found; 11 of them had been clinically classified as PV and one had been classified as MF. One patient with the MPL W515L was identified with a clinical picture of ET. No individuals with either the MPL W515K mutation or the JAK2 exon 12 mutations were identified. Of the 17 individuals with ET, six (35%) had the JAK2 V617F mutation and one (6%) was found to have the MPL W515L mutation. Of the eight individuals with PV, five displayed the JAK2 V617F mutation, whereas of the four patients with MF, one had the JAK2 V617F mutation. The most consistent relationship was that between PV and the JAK2 V617F mutation (p=0.08). In the diagnosis and classification of the MPN, in addition to the newly identified molecular markers, clinical and laboratory data are still very important.

[Clinical and epidemiologic characteristics of dengue cases: the experience of a general hospital in Culiacan, Sinaloa, Mexico]. / Caracterización clínica y epidemiológica de los casos de dengue: experiencia del Hospital General de Culiacán, Sinaloa, México.

OBJECTIVES: To document the clinical and epidemiological characteristics present in dengue patients served by a hospital in Culiacan, Sinaloa, Mexico. METHODS: A cross-sectional, observational, and analytical study was carried out at the Hospital General Dr. Bernardo J. Gastélum de Culiacan from 1 October to 2 December 2003. Associations between the independent variables (the patients' clinical and epidemiological characteristics) and the dependent variable (confirmed hemorrhagic dengue) were determined through simple regression analysis. The variables that were significantly associated (P < 0.05) were submitted to multifactorial logistic regression analysis. RESULTS: Of the only 241 cases that met the study's inclusion criteria (207 dengue and 34 hemorrhagic dengue), the mean age was 34.7 +/- 15.1 years. According to the results of the multifactorial analysis (adjusted by age, sex, and the presence of dengue cases at the geographic location), the variables predictive of major complications of the disease were: the presence of ascites (odds ration [OR] = 22.12; 95% confidence interval [95%CI]: 5.00-97.87), gingivorrhagia (OR = 7.35; 95%CI: 2.11-25.61), hematemesis (OR = 7.40; 95%CI: 1.04-52.42), thrombocytopenia (platelets from 40,001/mm(3)-60,000/mm(3)) (OR = 5.43; 95%CI: 1.58-18.72), conjunctival hyperemia (OR = 4.27; 95%CI: 1.37-13.28), persistent vomiting (OR = 3.04; 95%CI: 1.05-8.80), and the absence of nasal congestion (OR = 0.015; 95%CI: 0.0004-0.473). CONCLUSIONS: The presence of ascites, gingivorrhagia, hematemesis, thrombocytopenia (with platelet values from 40,001/mm(3)-60,000/mm(3)), and persistent vomiting were confirmed as warning signs of an imminent dengue attack. Platelet counts of > 100,000/mm(3) were confirmed in cases with acute clinical symptoms (capillary leak) that were not classified as hemorrhagic dengue due to falling short of the criteria established by WHO.

Caracterización clínica y epidemiológica de los casos de dengue: experiencia del Hospital General de Culiacán, Sinaloa, México / Clinical and epidemiologic characteristics of dengue cases: the experience of a general hospital in Culiacan, Sinaloa, Mexico

OBJETIVO: Documentar las características clínicas y epidemiológicas de los pacientes con dengue atendidos en un hospital de Culiacán, Sinaloa, México. MÉTODOS: Estudio transversal, observacional y analítico realizado en el Hospital General Dr. Bernardo J. Gastélum de Culiacán entre el 1 de octubre y el 2 de diciembre de 2003. Se evaluó la asociación entre las variables independientes (las características clínicas y epidemiológicas de los pacientes) y la variable dependiente (diagnóstico confirmado de dengue hemorrágico) mediante el análisis de regresión simple. Las variables que mostraron una relación significativa (P < 0,05) se incluyeron en el análisis de regresión logística multifactorial. RESULTADOS: En los 241 casos que cumplieron los criterios de inclusión para este estudio (207 de dengue y 34 de dengue hemorrágico), la edad promedio fue de 34,7 ± 15,1 años. Según los resultados del análisis multifactorial ajustado por la edad, el sexo y la presencia de casos de dengue en la localidad, las variables con valor predictivo de una mayor gravedad de la enfermedad fueron: la presencia de ascitis (OR = 22,12; IC95 por ciento: 5,00 a 97,87), la gingivorragia (OR = 7,35; IC95 por ciento: 2,11 a 25,61), la hematemesis (OR = 7,40; IC95 por ciento: 1,04 a 52,42), la trombocitopenia (plaquetas entre 40 001/mm³ y 60 000/mm³) (OR = 5,43; IC95 por ciento: 1,58 a 18,72), la hiperemia conjuntival (OR = 4,27; IC95 por ciento: 1,37 a 13,28), los vómitos persistentes (OR = 3,04; IC95 por ciento: 1,05 a 8,80) y la ausencia de congestión nasal (OR = 0,015; IC95 por ciento: 0,0004 a 0,473). CONCLUSIONES: Se confirmó el valor de la presencia de ascitis, gingivorragia, hematemesis, trombocitopenia (con valores de plaquetas entre 40 001/mm³ y 60 000/mm³) y vómitos persistentes como signos de alarma que anuncian la inminencia del choque por dengue. Se observaron conteos plaquetarios > 100 000/mm3 en casos con cuadros clínicos graves (fuga capilar) que no se...

OBJECTIVES: To document the clinical and epidemiological characteristics present in dengue patients served by a hospital in Culiacan, Sinaloa, Mexico. METHODS: A cross-sectional, observational, and analytical study was carried out at the Hospital General Dr. Bernardo J. Gastélum de Culiacan from 1 October to 2 December 2003. Associations between the independent variables (the patients' clinical and epidemiological characteristics) and the dependent variable (confirmed hemorrhagic dengue) were determined through simple regression analysis. The variables that were significantly associated (P < 0.05) were submitted to multifactorial logistic regression analysis. RESULTS: Of the only 241 cases that met the study's inclusion criteria (207 dengue and 34 hemorrhagic dengue), the mean age was 34.7 ± 15.1 years. According to the results of the multifactorial analysis (adjusted by age, sex, and the presence of dengue cases at the geographic location), the variables predictive of major complications of the disease were: the presence of ascites (odds ration [OR] = 22.12; 95 percent confidence interval [95 percentCI]: 5.00-97.87), gingivorrhagia (OR = 7.35; 95 percentCI: 2.11-25.61), hematemesis (OR = 7.40; 95 percentCI: 1.04-52.42), thrombocytopenia (platelets from 40001/mm³- 60000/mm³) (OR = 5.43; 95 percentCI: 1.58-18.72), conjunctival hyperemia (OR = 4.27; 95 percentCI: 1.37-13.28), persistent vomiting (OR = 3.04; 95 percentCI: 1.05-8.80), and the absence of nasal congestion (OR = 0.015; 95 percentCI: 0.0004-0.473). CONCLUSIONS: The presence of ascites, gingivorrhagia, hematemesis, thrombocytopenia (with platelet values from 40001/mm³-60000/mm³), and persistent vomiting were confirmed as warning signs of an imminent dengue attack. Platelet counts of > 100000/mm3 were confirmed in cases with acute clinical symptoms (capillary leak) that were not classified as hemorrhagic dengue due to falling short of the criteria established by WHO.

Epidemiología de los padecimientos oncohematológicos por mortalidad hospitalaria en Sinaloa / Epidemiology in oncohematologic diseases based upon hospital mortality in Sinaloa

Se revisaron 25,449 muertes hospitalarias en base a certificados de defunción, ocurridas en la Delegación Estatal del Instituto Mexicano del Seguro Social en Sinaloa, de 1980 a 1991. Por cáncer fallecieron 3.115 (12.2 por ciento): del aparato digestivo 3.2 por ciento, respiratorio 2.6 por ciento, genitourinario 2.2 por ciento y hematológico 2.0 por ciento. De las 510 defunciones por padecimientos oncohematológicos, el 62.5 por ciento correspondió a las leucemias, destacando la linfoide aguda, cuya presentación fue más frecuente en el grupo de 5 a 14 años. Los casos de leucemian mieloide aguda fueron la mitad de los de linfoide, igual en uno y otro sexo y en todos los grupos de edad. En cuanto a las leucemias crónicas, la mieloide es dos veces más frecuente que la linfoide, siendo ambos padecimientos de adultos mayores de edad. La leucemia minocítica, la linfocítica crónica y la eritroleucemia son padecimientos poco frecuentes. Los linfomas significaron la quinta parte del total de las defunciones y su tendencia es presentarse en los grupos de mayor edad. La enfermedad de Hodgkin fue un padecimiento encontrado en niños y jóvenes, con una proporción por sexos de tres a uno a favor del masculino. El mieloma múltile predomina en los dos grupos de mayor edad, sin diferencias por sexo. En la mortalidad se ha observado un decremento hasta del 60 por ciento en los padecimientos oncohematológicos, principalmente leucemias y linfomas, probablemente debido a detecciones más oportunas y programas terapéuticos más intensivos, siendo estable por cáncer en general. Se comparan estos hallazgos con otros informes y se elaboran recomendaciones para la programación de actividades asistenciales, educativas y de investigación