The partial monosomy 10q syndrome: report on two patients and review of the developmental data.

Two patients, a boy and a girl, with growth delay, mental retardation and mild dysmorphism due to a de novo terminal 10q deletion are described. A recognizable facial appearance with a prominent nose and dysplastic ears was present. Specific attention is given to the developmental and behavioural data of the children. A review is made of the psychologic data of the 18 earlier reported surviving cases.