genetic disease that produces sterile females due to monosomy for X chromosome; the ovaries are rudimentary or missing; other abnormalities include short stature, webbed neck, and a broad chest with widely spaced nipples.
A syndrome in which the affected patients have only 45 chromosomes, the loss of one of the X chromosomes producing an XO chromosome constitution. The syndrome occurs in 1/2500 female births and nearly 99% of XO fetuses are aborted. Gonadal agenesis and short stature are the main features in the surviving infants. Associated anomalies may included webbed neck, cubitus valgus, shield chest, short stature, lymphedema, coarctation of the aorta, pigmented nevi, and various renal, skeletal, dermatologic, neoplastic, and autoimmune complications. Mental retardation is attributed to ring chromosome X. The phenotype varies and not all abnormalities occur in all patients.
2006 ICD-9-CM Diagnosis Code 758.6
