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Table 1 Brain MRI anomalies in 146 patients with ASD in day-care hospitals of the Greater Paris region

From: Impact of on-site clinical genetics consultations on diagnostic rate in children and young adults with autism spectrum disorder

Brain MRI anomalies Number of patients
Temporal pole anomalies on T2-weighted images (subcortical hyper-intensity52, hypoplasia2, 37, dedifferentiation) 36 (24.7%)
White matter hyper-intensities on T2-weighted images (hemispheres60, periventricular, insula, pallidum, cerebellum; focal, punctuate, heterotopia) 26 (17.8%)
Cerebellar anomalies (vermian or hemispheric atrophy37, 54, 67, hypoplasia20, signal anomalies) 25 (17.1%)
Abnormal ventricles (dysmorphism45, dilatation18, asymmetry) 23 (15.8%)
Corpus callosum anomalies (short, thin18, thick26, 37, dysmorphic) 19 (13.0%)
Cysts47, tumors (teratoms, gangliomas, germinomas) 14 (9.6%)
Dilation of Virchow-Robin spaces47 12 (8.2%)
Abnormal pituitary gland14, 52 8 (5.5%)
Abnormal gyration (heterotopia, polymicrogyria, pachygyria) 6 (4.1%)
  1. The numbers in superscript refer to the patients listed in Tables 2 and 3