Duplication of 9q12-q33: a case report and implications for the dup(9q) syndrome.

We report on a boy with a direct tandem duplication of 9(q12-q33) and dolichocephaly, beaked nose with prominent philtrum, deep-set eyes, receding small chin, failure to thrive, developmental delay, simian creases, long fingers, stiff joints, and hypoplastic scrotum. This patient is compared to the 5 other reported cases with pure partial dup(9q), and the "trisomy 9q syndrome" described by Turleau et al. [1975].