Mental retadation: a MRI study of 146 Brazilian children.
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.
da Rocha
Armando Freitas
AF
Department of Radiology, School of Medicine, University of São Paulo, Brazil.
da Costa Leite
Cláudia
C
Rocha
Fábio Theoto
FT
Massad
Eduardo
E
Cerri
Giovanni Guido
GG
de Oliveira Angelotti
Sueli Aparecida
SA
Gomes
Eloisa Helena Garcia
EH
Oliveira
Carla Cristina M
CC
D000293:Adolescent; D000328:Adult; D001921:Brain / Q000002:abnormalities*; D002648:Child; D005260:Female; D006801:Humans; D008607:Intellectual Disability / Q000209:etiology / Q000473:pathology*; D008279:Magnetic Resonance Imaging; D008297:Male; D011247:Pregnancy; D011248:Pregnancy Complications / Q000523:psychology