Mental retadation: a MRI study of 146 Brazilian children

• Autor(a) principal: Rocha,Armando Freitas da
• Data de Publicação: 2006
• Outros Autores: Leite,Cláudia da Costa, Rocha,Fábio Theoto, Massad,Eduardo, Cerri,Giovanni Guido, Angelotti,Sueli Aparecida de Oliveira, Gomes,Eloisa Helena Garcia, Oliveira,Carla Cristina M.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Arquivos de neuro-psiquiatria (Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0004-282X2006000200003
• topic: mental retardation; magnetic resonance image; maternal stress; cerebral lesion; agressiveness

We report results of a magnetic ressonance imaging (MRI) study of 146 Brazilian children, whose intelligence quotient scored less than 70. 50% of MRI examinations did not exhibit any signal of structural lesion (N group), whereas a focal thinning at the junction of the body and splenium of the corpus callosum; ventricular asymmetry; periventricular leukomalacia; gliosis and arachnoid cysts were among the most frequent findings in the remaining of subjects (L group). Maternal stress and altered blood pressure were the most frequent findings in the pre-natal history of both N and L children. Familial antecedents of mental deficiency were reported in 30% of both groups, whereas familiar history of alcoholism was important in N group (60% in N versus 0% in L groups). Neuropsychomotor development was delayed in 80% of the children in both groups. Aggressiveness is the most frequent finding in the post-natal children history.