RING-20 CHROMOSOME IN A CHILD WITH SEIZURES, MINOR ANOMALIES, AND RETARDATION

A patient is reported with seizures, developmental delay, and minor physical anomalies. Karyotype showed a ring formation of chromosome number 20. Previously reported patients with this chromosomal aberration had seizures and behavioral disorders with considerable variation in the degree of physical abnormality and mental retardation. A correct diagnosis in such a case is important for accurate genetic counseling.