[Factors associated with advanced thyroid cancer in pediatric patients in a high specialty medical unit in Northeast Mexico].

Introduction: Thyroid cancer represents 2% of all childhood malignances. Its incidence rises 1.1% per year.

[Effectiveness of trabeculectomy trabeculotomy in the reduction of intraocular pressure in patients with primary congenital glaucoma].

Objective: To evaluate the effectiveness of trabeculectomy trabeculotomy in the reduction of intraocular pressure in patients with primary congenital glaucoma.

Material And Methods: A pre-experimental before and after study was conducted with several measurements after; patients with intraocular pressure≥21 mmHg were included, of both sexes, and children under six years, which had ​​the trabeculotomy trabeculectomy. Success was defined as the reduction of intraocular pressure<21 mmHg within three months after the procedure.

[Prolonged exposure to antibiotics and the risk of late-onset sepsis (LOS) in neonates of 1,000-1,500 g: a cohort study].

Objective: To determine whether prolonged exposure to antibiotics (>5 days) increases the risk of late-onset sepsis (LOS) in newborns of 1,000-1,500 g.

Methods: A cohort study in newborns with suspected perinatal infection, with a survival greater than seven days. The exposed cohort was composed of newborns with antibiotic therapy initiated at first postnatal day, lasting >5 days, with negative blood cultures before the fifth day of life, and without clinical evidence of sepsis.

[Evolution of pediatric patients with liver transplantation in a tertiary care hospital in northeast country].

Introduction: Liver transplantation is indicated for the treatment of pediatric patients with progressive liver disease in which an expected survival of less than a year would be achieved with the transplant. The aim of this study was to determine the evolution of pediatric liver transplant patients in a tertiary care hospital in the northeast country.

Results: Twelve patients subjected to liver transplantation included nine females and three males; one case required retransplantation.

[Reference Intervals for total triiodothyronine (TT3), free thyroxine (FT4), and thyrotropin (TSH) by chemiluminescence immunoassay in children younger than six years old from northeastern Mexico].

Background: Reference values according to age groups for each population are needed for the diagnosis and follow-up of pediatric patients with thyroid diseases. Such values are unknown for Mexican infants and children younger than six years.

Objective: To determine the reference values of total TT3, FT4 and TSH by chemiluminescence immunoassay in infants and children younger than six year old in Northeastern Mexico.

[Hepatic steatosis (HS) as a factor associated with the presence of metabolic risk in schoolchildren and obese adolescents].

Introduction: One of the complications associated with obesity is nonalcoholic fatty liver disease (NAFLD), which is defined as an excessive accumulation of fat in hepatocytes, and is characterized by chronic elevation of aminotransferases and ultrasonographic abnormalities (increased echogenicity). In the USA it is now the most common liver disease. Prevalence is around 15-25% in the general population, and this increases to 57.