Chromosome aneuploidies such as 48,XYYY are diagnosed via karyotype. Rarely,<unk>  has been detected prenatally via amniocentesis, though no prenatally diagnosed cases of<unk>  have survived to birth.
XYYY syndrome
XYYYY syndrome
XYY syndrome
XXYY syndrome
XX male syndrome
XXXY syndrome
Turner syndrome
Klinefelter syndrome