La Urolitiasis es la presencia de piedras y de matriz orgánica dentro del aparato urinario. Representan un trastorno metabólico complejo, multifactorial. Es una enfermedad muy frecuente que va aumentando su incidencia en los últimos años, afecta entre el 1 y 15% de la población mundial. En el Perú la prevalencia de litiasis renal se encuentra entre el 5% al 10% de los pobladores. Es una enfermedad que de no ser tratada adecuadamente produce con el tiempo una insuficiencia renal, llevando a un elevado costo socioeconómico y ser un problema de Salud Pública. Objetivo: Determinar cuáles son las características clínicas, los métodos diagnósticos y manejo quirúrgico en pacientes portadores de litiasis urinaria atendidos en el Servicio de Urología del Hospital Regional Honorio Delgado Espinoza en el periodo 2013 al 2017. Material y métodos: Estudio descriptivo, transversal y re...

Objectives: To report the retinoblastoma stage at diagnosis in patients across the world during a single year, to investigate associations between clinical variables and national income level, and to investigate risk factors for advanced disease at diagnosis.Design, setting, and participants: A total of 278 retinoblastoma treatment centers were recruited from June 2017 through December 2018 to participate in a cross-sectional analysis of treatment-naive patients with retinoblastoma who were diagnosed in 2017. Main outcomes and measures: Age at presentation, proportion of familial history of retinoblastoma, and tumor stage and metastasis.Results: The cohort included 4351 new patients from 153 countries; the median age at diagnosis was 30.5 (interquartile range, 18.3-45.9) months, and 1976 patients (45.4%) were female. Most patients (n = 3685 [84.7%]) were from low- and middle-income count...

Five patients with thyroid cancer and thyroidectomy are reported. In the whole body iodine-131 scan they had positive iodine-131 uptake with negative serum thyroglobulin (Tg). In all cases, remnant thyroid cancer tissue was reported in the muscle adjacent to the laryngeal cartilage, which could explain iodine uptake in spite of negative serum Tg. It is recommended to perform a whole body iodine-131 scan when there is a strong suspicion of microscopic cancer tissue in the remnant tissues.

Background: The aim of this research was to characterise the interest on the most frequent cancers in Peru through Google Trends, its geographic and temporal relationship with massive awareness campaigns. Methods: A temporal trends analysis for the last 5 years was carried out, comparing the Relative Search Volume (RSV) with the dates of mass cancer awareness campaigns in Peru. Google Trends application was used to evaluate the interest in the topics: breast, prostate, cervical stomach and colorectal cancer between 1 January 2016 and 31 December 2020, expressed in RSV. The annual RSV for each neoplasm was compared, as well as its annual variation using the Kruskal-Wallis test. The correlation between the RSV and the estimated incidence for each province was measured using the Spearman test. Results: The topics with the highest RSV were breast (median: 20, range: 6-100) and prostate cance...