Pincheira J V, Bustos-Obregón E, Pumarino H, Santos M A
Clin Genet. 1983 Nov;24(5):384-8. doi: 10.1111/j.1399-0004.1983.tb00090.x.
A male subject with Turner-like stigmata and chromosomic constitution 45,XO (97.5%) and 49,XYYYY (1.1%) is reported. The findings of a low percentage line bearing Y chromosome in a patient with clinical features similar to those described for XO males, would support the hypothesis that masculinization in certain individuals with 45,XO karyotype may be due to an undetected mosaicism.