Tetraploidy
92,XXXX
Also known as: 92 XXXX, tetraploid
92,XXXX is tetraploidy: four complete chromosome sets instead of two, most often from a failed first division of the zygote. It is rarely compatible with ongoing pregnancy and is mainly seen in early pregnancy loss; in a report it must also be distinguished from a tetraploid artifact of cell culture.
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What the notation means
92count,XXXXsex chromosomes
- count
- total chromosome count (normal = 46); a count near 92 reads as tetraploid, four copies of each chromosome
- sex chromosomes
- sex chromosomes: four X