A teen-ager with 46,X,del(X)(q21).

A 19-year-old woman has a chromosome constitution of 46,X,del (X) (pter leads to q21:). X chromatin masses seen in buccal smears were fewer and smaller than normal. The deleted X has more darkly stained regions around the centromere, and the short arm is also shorter. She is 155.5 cm tall and the breasts are normally developed, as are the external genitalia; however, she had primary amenorrhea. There are no evocative somatic malformation of Turner's syndrome.