Turner syndrome - Wikipedia
Turner syndrome is caused by one X chromosome (45,X), a ring X chromosome, 45,X/46,XX mosaicism, or a small piece of the Y chromosome in what should be an X chromosome. They may have a total of 45 chromosomes or will not develop menstrual periods due to …
Turner Syndrome: Diagnosis and Management - AAFP
2007年8月1日 · Turner syndrome occurs in one out of every 2,500 to 3,000 live female births. The syndrome is characterized by the partial or complete absence of one X chromosome (45,X karyotype).
Genetic Considerations in the Patient with Turner Syndrome—45,X …
A 45,X karyotype has been observed in 1–2% of human conceptions, 10% of first trimester pregnancy losses, 1% of stillbirths, and 1/2500 liveborns. 24 Interestingly, more than 99% of 45,X fetuses abort, typically by 28 weeks gestation.
Turner Syndrome - 45,X Explained - The ObG Project
2016年8月5日 · Turner syndrome (45,X) is a condition caused by an abnormal karyotype that is present at the time of conception and results from a sperm or egg that is capable of undergoing fertilization, but has no X chromosome.
Karyotype 45,X - an overview | ScienceDirect Topics
Karyotype 45,X refers to a genetic condition where an individual is missing one X chromosome, leading to mixed gonadal dysgenesis and inadequate masculinization, resulting in infertility. AI generated definition based on: Encyclopedia of Endocrine Diseases , 2004
A basic understanding of Turner syndrome: Incidence, …
A karyotype analysis of 67 patients with TS in Suzhou, China identified the 45,X karyotype in 44.7%, a mosaic karyotype in 17.9%, a karyotype with a chromosomal structural abnormality in 31.4%, and a karyotype that included the Y chromosome or fragments of …
Turner Syndrome (45 X Syndrome) - MN Dept. of Health
2024年12月17日 · In Turner Syndrome (TS), the most common chromosome configuration is 45, X. This means that the person is missing a sex chromosome, either an X or a Y. People with Turner Syndrome are all physically female.
Karyotype 45,X - an overview | ScienceDirect Topics
Cytogenetic nomenclature reports the total number of chromosomes followed by the sex chromosomes listed individually, thus the normal female karyotype is “46,XX” and Turner syndrome patients with a single X chromosome are “45,X.” The most common karyotype found in Turner syndrome is 45,X. 11, 35, 36 Mosaicism is defined as the presence ...
Karyotype 45,X - an overview | ScienceDirect Topics
Mixed gonad dysgenesis is suggested by the karyotype (45X/46, XY) and confirmed when a testis and a streak gonad are identified by biopsy. Because there is no pathognomonic karyotype in individuals with ovotesticular DSD, the diagnosis is dependent upon the gonadal biopsy results.
45,X/46,XY mosaicism - Wikipedia
45,X/46,XY mosaicism, also known as X0/XY mosaicism and mixed gonadal dysgenesis, [1] is a mutation of sex development in humans associated with sex chromosome aneuploidy and mosaicism of the Y chromosome.