Incontinentia Pigmenti is a rare genodermatosis, which is considered a hereditary alteration, linked to the X chromosome, with a dominant character. It occurs more frequently in women, and the main involvement is observed in tissues derived from the ectoderm, that is, it can be seen as abnormalities in the skin, teeth, hair, eyes and nervous system. We report a case of incontinentia pigmenti with cutaneous manifestations in a male newborn is presented. The case was confirmed through two biopsies evaluated in the pathological anatomy service of the Cayetano Heredia Hospital. Due to the broad spectrum of clinical presentation of incontinence pigmenti, it is recommended to consider this entity in the differential diagnosis when we are faced with predominantly vesicular skin lesions that follow a distribution along Blaschko lines. Incontinentia pigmenti is a rare disease in our country, and ...

Ewing´s sarcomas are a less common malignant neoplasms that can be located both in skeletal and extra skeletal areas. The primitive neuroectodermic tumor (PNET) shows more neuronal differentiation than Ewing´s sarcoma and rarely invades the skin and soft tissues. This tumor occasionally presents as a primary skin cancer which has distinctive features such as a superficial tumor with a 2-3 cm, soft, mobile and eventually painful. Most affected areas of the body are paravertebral spaces, lower limbs, head, neck and pelvis. We report here the case of a 13 year old male presenting with 2 superficial tumors located on the scalp, the histo pathological examination revealed a proliferation of small, basophilic and monomorphic cells that showed FLI1 positive immunohistochemistry pattern compatible with PNET. 

Introducción. El sistema operativo de evaluación de gastritis (OLGA) y el enlace operativo sobre la evaluación de metaplasia intestinal gástrica (OLGIM) proporcionan una evaluación del riesgo de desarrollar cáncer gástrico. Objetivo. Evaluar la distribución de estadios del OLGA y OLGIM por edad y presencia del Helicobacter pylori. Material y métodos. Se estudiaron 197 sujetos sometidos a una endoscopía digestiva alta electiva. La presencia del H. pylori y los cambios histológicos se evaluaron utilizando el sistema actualizado de Sídney. Los estadios III y IV del OLGA/OLGIM se consideraron estadios de alto riesgo. Resultados. La tasa del H. pylori fue del 56,85% (112/197). Los casos de OLGA/OLGIM de alto riesgo fueron poco frecuentes: 7/112 (6,5%) casos del OLGA en el grupo del H. pylori positivo y 6/85 (7%) en el del H. pylori negativo; 5 (4,4%) casos del OLGIM en el H. pylor...