LACC Trial: Final Analysis on Overall Survival Comparing Open Versus Minimally Invasive Radical Hysterectomy for Early-Stage Cervical Cancer.

Clinical trials frequently include multiple end points that mature at different times. The initial report, typically based on the primary end point, may be published when key planned co-primary or secondary analyses are not yet available. Clinical Trial Updates provide an opportunity to disseminate additional results from studies, published in JCO or elsewhere, for which the primary end point has already been reported.The aim of this study was to compare overall survival between open and minimally invasive radical hysterectomy with participants followed for 4.5 years. The primary objective was to evaluate whether minimally invasive surgery was noninferior in disease-free survival (DFS) to abdominal radical hysterectomy. Secondary outcomes included overall survival. Sample size was based on DFS of 90% at 4.5 years and 7.2% noninferiority margin for minimally invasive surgery. A total of 631 patients were enrolled: 319 assigned to minimally invasive and 312 to open surgery. Of these, 289 (90.6%) patients underwent minimally invasive surgery and 274 (87.8%) patients open surgery. At 4.5 years, DFS was 85.0% in the minimally invasive group and 96% in the open group (difference of -11.1; 95% CI, -15.8 to -6.3; P = .95 for noninferiority). Minimally invasive surgery was associated with lower rate of DFS compared with open surgery (hazard ratio [HR], 3.91 [95% CI, 2.02 to 7.58]; P < .001). Rate of overall survival at 4.5 years was 90.6% versus 96.2% for the minimally invasive and open surgery groups, respectively (HR for death of any cause = 2.71 [95% CI, 1.32 to 5.59]; P = .007). Given higher recurrence rate and worse overall survival with minimally invasive surgery, an open approach should be standard of care.

Epidemiology of childhood acute leukemias in marginalized populations of the central-south region of Mexico: results from a population-based registry.

Introduction: Acute leukemias (AL) are the main types of cancer in children worldwide. In Mexico, they represent one of the main causes of death in children under 20 years of age. Most of the studies on the incidence of AL in Mexico have been developed in the urban context of Greater Mexico City and no previous studies have been conducted in the central-south of the country through a population-based study. The aim of the present work was to identify the general and specific incidence rates of pediatric AL in three states of the south-central region of Mexico considered as some of the marginalized populations of Mexico (Puebla, Tlaxcala, and Oaxaca). Methods: A population-based study was conducted. Children aged less than 20 years, resident in these states, and newly diagnosed with AL in public/private hospitals during the period 2021-2022 were identified. Crude incidence rates (cIR), standardized incidence rates (ASIRw), and incidence rates by state subregions (ASIRsr) were calculated. Rates were calculated using the direct and indirect method and reported per million children under 20 years of age. In addition, specific rates were calculated by age group, sex, leukemia subtype, and immunophenotype. Results: A total of 388 cases with AL were registered. In the three states, the ASIRw for AL was 51.5 cases per million (0-14 years); in Puebla, it was 53.2, Tlaxcala 54.7, and Oaxaca de 47.7. In the age group between 0-19 years, the ASIRw were 44.3, 46.4, 48.2, and 49.6, in Puebla, Tlaxcala, and Oaxaca, respectively. B-cell acute lymphoblastic leukemia was the most common subtype across the three states. Conclusion: The incidence of childhood AL in the central-south region of Mexico is within the range of rates reported in other populations of Latin American origin. Two incidence peaks were identified for lymphoblastic and myeloid leukemias. In addition, differences in the incidence of the disease were observed among state subregions which could be attributed to social factors linked to the ethnic origin of the inhabitants. Nonetheless, this hypothesis requires further investigation.

Cancer incidence and mortality in children in the Mexican Social Security Institute (1996-2013) / Incidencia y mortalidad por cáncer en niños atendidos en el Instituto Mexicano del Seguro Social (1996-2013)

Abstract Objective: To identify the cancer incidence and mortality in Mexican Social Security Institute beneficiary (MSSI-B) children during 1996-2013. Materials and methods: Both cancer cases (n=4 728) and deaths (n=2 378) were analyzed in MSSI-B children who were registered in five states of the Mexican Republic. The incidence and mortality trends and the incidences (rate x 1 000 000 children / year) of the type of cancer, age, sex, and place of residence were obtained. Results: For both indicators (incidence and mortality), there was a downward trend for the period of 1996-2001 and a stable trend for 2002-2013. This occurred in the overall mortality and incidence trends of the Estado de México and Chiapas and in the leukemia and the acute lymphoid subgroups. The annual overall incidence was 128 cases per 1 000 000 children. Leukemia, lymphomas, and central nervous system tumors were the principal cancer groups. Conclusions: Cancer mortality for the period of 2002-2013 did not diminish. Interinstitutional and/or international research should be designed to improve the care of these children.

Resumen Objetivo: Mostrar la incidencia y mortalidad por cáncer en niños derechohabientes del Instituto Mexicano del Seguro Social (DH-IMSS) (periodo 1996-2013). Material y métodos: Se analizaron los casos (n=4 728) y las muertes (n=2 378) por cáncer en niños DH-IMSS registrados en cinco estados de la República mexicana. Se obtuvo la tendencia de la incidencia y mortalidad y la incidencia por tipo de cáncer, edad, sexo y lugar de residencia. Resultados: Para ambos indicadores (incidencia y mortalidad) hubo tendencia a la disminución para el periodo 1996-2001 y estabilidad para 2002-2013; esto sucedió para la tendencia global, para el Estado de México y Chiapas, para las leucemias y para el subgrupo de las linfoide agudas. La incidencia global fue de 128 x 1 000 000 niños/año; las leucemias, tumores del sistema nervioso central y linfomas fueron los principales grupos de cáncer. Conclusiones: La mortalidad por cáncer para el periodo 2002-2013 no ha disminuido; deben diseñarse investigaciones interinstitucionales e internacionales para mejorar la atención médica de estos niños.

Compromiso parametrial en pacientes con cáncer de cérvix IB-1 tratadas con histerectomía radical en Perú / Parametrial involvement in cervical cancer IB1 patients treated with radical hysterectomy in Peru

Objetivos. Evaluar la frecuencia y factores asociados al compromiso parametrial (CP) en pacientes con cáncer de cérvix IB-1 sometidas a histerectomía radical (HR) en el Instituto Nacional de Enfermedades Neoplásicas del Perú. Materiales y métodos. Estudio transversal analítico en 214 pacientes con cáncer de cérvix IB-1 sometidas a HR con linfadenectomía pélvica entre el 2007 y 2012. Se comparó la población con y sin CP según variables clinicopatológicas como edad, tamaño tumoral, profundidad de infiltración, grado histológico y afectación ganglionar pélvica. Resultados. Diez pacientes (4,6%) presentaron CP. El análisis multivariable mostró que la profundidad de la invasión (OR 8,37, IC 95%: 1,24-56,41, p=0,029) y el compromiso de ganglios pélvicos (OR 18,03, IC 95%: 3,30-98,44, p=0,001) resultaron ser predictores independientes del CP. La presencia de tamaño tumoral ≤ 2 cm, invasión ≤ 10 mm, ausencia de permeación linfovascular y ausencia de compromiso ganglionar permitió identificar 97 pacientes de bajo riesgo de CP, de los cuales ninguno tuvo CP en patología. Conclusiones. Confirmamos la baja frecuencia del CP en el subgrupo de cáncer de cervix IB-1 y su asociación con la profundidad de la invasión y con el compromiso ganglionar linfático sugeridos en estudios previos. Esta información permitirá identificar un subgrupo de pacientes con bajo riesgo de CP candidatas a una cirugía menos radical en nuestra institución...

Objectives. To assess the frequency and factors associated with parametrial involvement (PI) in patients with cervical cancer IB1 who underwent radical hysterectomy (RH) at the National Institute of Neoplastic Diseases in Peru. Materials and methods. Cross-sectional study of 214 patients with cervical cancer IB1 undergoing RH with pelvic lymphadenectomy between 2007 and 2012. The population was compared with and without clinicopathological variables associated with PI such as age, tumor size, depth of infiltration, histological grade and pelvic lymph node involvement. Results. Ten patients (4.6%) had PI. Multivariate analysis showed that the depth of invasion (OR 8.37, 95% CI 1.24- 56.41, p=0.029) and pelvic node involvement (OR 18.03; 95% CI 3.30-98.44, p=0.001) were all independent predictors of PI. The presence of tumor size ≤ 2 cm, invasion ≤ 10 mm, absence of lymphovascular permeation and absence of nodal involvement identified 97 patients at low risk of PI, none of whom had PI pathology. Conclusions. We confirmed the low frequency of PI in the cervical cancer IB1 subgroup and its association with the depth of invasion and lymph node involvement suggested in previous studies. This information will allow the identification of a subgroup of patients at low risk of PI for less radical surgery in our institution...

Valor de la biopsia de endometrio y la ultrasonografía transvaginal en la evaluación prequirúrgica de pacientes con cáncer de endometrio / Value of endometrial biopsy and transvaginal ultrasonography in the presurgical evaluation of patients with endometrial cancer

El manejo inicial del cáncer de endometrio es quirúrgico, en base a factores pronósticos que se pueden evaluar en los estudios preoperatorios. En el presente estudio evaluamos la exactitud de la biopsia de endometrio para determinar el tipo histológico y grado de diferenciación del cáncer de endometrio; asimismo comparamos la exactitud de la ultrasonografía transvaginal y la resonancia magnética en la determinación de la infiltración del miometrio antes del tratamiento quirúrgico. Material y métodos: 21 pacientes con diagnóstico de cáncer de endometrio, hospitalizadas en Instituto Nacional de Enfermedades Neoplásicas, desde Agosto del 2007 hasta Abril del 2008, fueron evaluadas en el preoperatorio con biopsia de endometrio, ultrasonografia transvaginal y resonancia magnética determinando la infiltración miometrial, comparando estos resultados con los hallazgos histopatológicos de la pieza operatoria. Resultados: La exactitud de la biopsia de endometrio para determinar el tipo histológico y grado de diferenciación del tumor, fue 95% y 72% respectivamente. No se encontraron diferencias estadísticamente significativas entre la exactitud de la ultrasonografia transvaginal y la resonancia magnética para determinar la profundidad de invasión del miometrio (71% vs. 86% p=0,228). Conclusión: Existe una alta correlación entre la biopsia prequirúrgica de endometrio y el estudio anatomopatológico de la pieza operatoria y la ultrasonografía transvaginal es tan efectiva como la resonancia magnética en la evaluación preoperatoria de las pacientes con cáncer de endometrio. La biopsia de endometrio y la ultrasonografia transvaginal en la evaluación preoperatoria pueden ayudarnos a clasificar a los pacientes con cáncer de endometrio en grupos de diferente riesgo para planificar un tratamiento quirúrgico adecuado.

Initial management of endometrial cancer is surgery based on prognostic factors can be evaluated in the preoperative evaluation. In this study we evaluated the accuracy of endometrial biopsy to determine histological type and degree of differentiation of endometrial cancer; also compare the accuracy of transvaginal ultrasonography and magnetic resonance in determining miometral infiltration before surgical treatment. Material and methods: 21 patients diagnosed with endometrial cancer, hospitalized at the Instituto Nacional de Enfermedades Neoplásicas, from August 2007 to April 2008 were evaluated in the preoperative endometrial biopsy, transvaginal ultrasound and magnetic resonance determining miometral infiltration, comparing these results with the histological findings of the surgical specimen. Results: The accuracy of endometrial biopsy to determine the histological type and degree of differentiation of the tumor was 95% and 72% respectively. There are not statistically significant differences between the accuracy of transvaginal ultrasonography and magnetic resonance to determine the depth of miometral invasion (71% vs. 86% p = 0.228). Conclusion: There is a high correlation between preoperative endometrial biopsy and the pathological specimen; and transvaginal ultrasonography is as effective as magnetic resonance in the preoperative evaluation of patients with endometrial cancer. The endometrial biopsy and transvaginal ultrasonography in the preoperative evaluation may help to classify patients with endometrial cancer in different risk groups to plan appropriate surgical treatment.

Tuberculosis osteoarticular: caso clínico y revisión de la literatura / Osteoarticular tuberculosis: case report and literature review

La tuberculosis es menos frecuente que hace unas decada, pero es importante para el pediatra considerarla entre los diagnósticos diferentes de la artritis séptica de cadera, como lo demuestra el caso clínico que se publica a continuación.

Trombosis venosa el golfo yugular y seno longitudinal / Longitudinal sinus venous thrombosis

Este trabajo reporta el caso de un escolar de sexo femenino que consulta por compromiso del estado general, fiebre y cefalea, diagnosticándose posteriormente trombosis venosa del golfo yugular y seno longitudinal.