An infant with Down-Turner double aneuploidy: a case report and literature review.

The case of an 8 month-old female infant with non-mosaic Down-Turner double aneuploidy is reported. She had Down facies without stigmata of Turner syndrome. A review of 22 previous reported cases revealed mosaicism in all cases, either 21 mosaic or X mosaic. Our patients is the first reported case of non-mosaic trisomy 21-monosomy X polysyndrome in Thailand.