background: neuroectodermal tumors (pnet) are malignant small cells neoplasm mainly occurring in children but can occur at any age. extensive bleeding into the pleural cavity is rare in children. hemothorax would be compatible with a variety of congenital anomalies including sequestration, patent ductus artreiosus, and pulmonary arteriovenous malformation. case report: a 2.5-years old girl who ...

Based on a reflection the tensions between play, education, and learning in early childhood, this article aims to identify analyze factors that limit or negatively condition possibilities for play at school during transition childhood education primary Chile. The study was conducted four Chilean schools, with levels of (children aged 4 5) first two 6 7). an ethnographic approach, we combined 22...

research findings have shown that birth order and season of birth are related to some of the mental disorders such as schizophrenia, mood disorders. autism, attention deficit disorder with hyperactivity and substance abuse, and these disorders are related to dopamine level. a retrospective study was designed to investigate 130 substance abusers (119 males and 11 females) which were treated duri...