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Mental Retardation: a MRI study of 146 Brazilian children
Arq Neuropsiquiatr (2006)
  • Armando F Rocha
  • Cláudia C Leite
  • Fábio T Rocha
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 pre ss u re were the most frequent findings in the pre-natal history of both N and L children. Familial antecedents of mental deficiency were re p o rted 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 childre n history.
  • IQ,
  • MRI,
  • Intelligence,
  • Disability
Publication Date
Citation Information
Armando F Rocha, Cláudia C Leite and Fábio T Rocha. "Mental Retardation: a MRI study of 146 Brazilian children" Arq Neuropsiquiatr Vol. 64 (2006)
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