PT - JOURNAL ARTICLE AU - M A Lamont AU - N R Dennis AU - M Seabright TI - Chromosome abnormalities in pupils attending ESN/M schools. AID - 10.1136/adc.61.3.223 DP - 1986 Mar 01 TA - Archives of Disease in Childhood PG - 223--226 VI - 61 IP - 3 4099 - http://adc.bmj.com/content/61/3/223.short 4100 - http://adc.bmj.com/content/61/3/223.full SO - Arch Dis Child1986 Mar 01; 61 AB - One hundred and sixty six children attending educationally subnormal/mild (ESN/M) schools were karyotyped as part of a project investigating the aetiology of mild mental retardation. Nine had significant chromosome abnormalities. Five of six children identified during the survey had no dysmorphic features--47,XXY (two), 48,XXYY, 46,XX 15q-, and 46,XX,t(X;19). One dysmorphic boy had a balanced translocation--46,XY,t(3;15). Three were already known--47,XX+21 (two) and 46,XY, 14q+. We suggest that routine karyotyping of children with mild mental retardation be considered.