Klinefelter sendromu ilk tan›mlanan kromozom anomalisi olup temel olarak hipergonadotropik hipogonadizm ve önükoid vücut yap›s› ile karakterizedir. S›kl› ¤›. ‘de tarif edilen Klinefelter sendromu hipogonadiz ve infertilitenin en sık tek nedenidir. Paternal mayoz hataları Klinefelter sendromunun yarısını oluştururken . Key words: Antisocial personality disorder, Klinefelter’s syndrome. ÖZET. Antisosyal kişilik bozukluğu ile karşımıza çıkan 18 yaşında Klinefelter’s sendromu tanısı.

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Considerations for androgen therapy in children and adolescents with Klinefelter senromu 47, XXY. J Clin Endocrinol Metab ;2: Clinical conferences at The Johns Hopkins Hospital: Dandona P, Rosenberg MT.

Tureng – klinefelter sendromu – Turkish English Dictionary

However, in patients at their pre-pubertal period, this feature does not contribute much to the diagnosis. The classic clinical features of patients with Klinefelter syndrome start to become recognizable during adolescence. No relationship has been detected between the occurrence of gynecomastia and increase in estrogen.

Infants, whose fathers have Klinefelter syndrome, mostly have normal karyotype. In patients with mosaic form, serum FSH level is seen klinefeletr be slightly higher, while serum testosterone levels are usually normal.

Usually, physical findings and developmental characteristics of children with classic Klinefelter syndrome are not different from normal children. Gynecomastia patients might klinefeltfr high levels of estrogen, while no gynecomastia could be detected in patients with significantly higher estrogen serum levels.

Prenatally, Klinefelter syndrome can be detected by the karyotype evaluation of the pleural fluid in amniocentesis. As the number of X chromosomes increases, patients show more dysmorphic features.


File:Klinefelter’s Syndrome XXY DNA.jpg

The Klinefelter syndrome of testicular dysgenesis. In adult males with complaint of infertility, the possibility of Klinefelter syndrome must be considered as a fact. In fact, estrogen levels can be normal in most patients. Clinical and diagnostic features of patients with suspected Klinefelter syndrome.

Usually testicular volume does not exceed ml in patients with Klinefelter syndrome 9. Testosterone therapy provides an increase in muscle mass, strength-toughness, hair growth, bone mineral density and libido. In patients with no treatment plan, free fractions should klinefeelter evaluated carefully and a detailed clinical evaluation is needed as well.

Int J Clin Pract ; Another common laboratory finding in almost all of the patients with Klinefelter syndrome is serious reduction in the number of sperm. Cases of Klinefelter syndrome developed due to the errors in the stage of mitosis following the formation of the zygote are rare 7.

File:Klinefelter’s Syndrome XXY – Wikimedia Commons

Clin Endocrinol Oxf ;4: Rogol AD, Tartaglia N. Oral preparations may rarely have toxic effects to liver thus it is not preferred very often.

Seldom in Klinefelter syndrome patients, who had spermatozoa in their ejaculate, pregnancies were reported with the help of human chorionic gonadotropin therapy. Clin Pediatr Phila ; Within hereby klinefflter of Use”, “Turkiye Klinikleri” reserves the rights for “Turkiye Klinikleri” services, “Turkiye Klinikleri” information, the products associated with “Turkiye Klinikleri” copyrights, “Turkiye Klinikleri” trademarks, “Turkiye Klinikleri” trade looks or its all rights for other entity and information it has through this website unless it is explicitly authorized by “Turkiye Klinikleri”.



There are patients showing clinical signs at various levels as well as patients showing no symptoms. Rec Prog Horm Res ; The definitive diagnosis is made by chromosome analysis of lymphocytes from peripheral blood. The most common malformation is clinodactyly. In Klinefelter syndrome, the most typical clinical manifestation is testicles not getting bigger despite the development of secondary sex characteristics.

Sometimes an increase in testosterone during puberty may happen a little late than peers. However, an amniocentesis on suspicion of Klinefelter is not within the perinatal routine because it does not show any significant features in ultrasound examination during pregnancy. However, when using gel preparations, a special attention should be paid against a contamination of the female partner. Should non-mosaic Klinefelter syndrome men be labelled as infertile in ?

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Mol Hum Reprod ; Klinefelter syndrome is the most common sex chromosome disorder in males.