[Liver and colonic manifestation of active chronic infection by Epstein Barr virus].

Introduction: Chronic active Epstein Barr virus infection (CAEBV) is a rare condition, where the body is unable to counteract Epstein Barr viral replication (EBV), leading the patient to a chronic state with variable symptoms. Early recognition of infrequent or atypical clinical manifestations is relevant due to the particularities of their management and prognosis.

Objective: to describe a case of CAEBV manifes ted with colitis and hepatitis, summarizing the clinical-pathological and endoscopic characteristics and their evolution.

Nutritional benefits in pediatric patients with percutaneous endoscopic gastrostomy placement.

Gastrostomy is an enteral nutrition option. Indications for its placement are diverse, among them, the alteration in the mechanics of swallowing, frequently present in patients with neurological diseases. Nutritional recovery is the objective in these patients evaluating the nutritional status after the placement of a PEG in the pediatric population.

[Epidermolysis bullosa in children: a retrospective study in a reference hospital].

Background: Epidermolysis bullosa (EB) is a genodermatosis caused by mutations in the proteins of the dermal-epidermal junction, altering the epithelial cohesion, and generating blisters and shedding of skin and mucous membranes.

Objective: To describe the demographic and clinical characteristics, as well as the main complications of patients with EB attended at the National Institute of Pediatrics, in Mexico City.

Method: An observational, descriptive, retrospective and cross-sectional study was conducted in patients under 18 years of age with diagnosis of EB.

[Guía latinoamericana para el diagnóstico y tratamiento de alergia a las proteínas de la leche de vaca (GL-APLV)].

Cow's milk allergy (CMA) is an immune-based disease that has become an increasing problem. The diagnosis and management of CMA varies from one clinical setting to another and represents a challenge in pediatric practice. In addition, because nonallergic food reactions can be confused with CMA symptoms, there is an overdiagnosis of the disease.