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• W4377862042 abstract "Introduction. To investigate the predictive factors for successful repeat microdissection testicular sperm extraction attempts in patients with Klinefelter syndrome. Methods. A total of 28 azoospermic men with nonmosaic Klinefelter syndrome who have received microdissection testicular sperm extraction twice with successful initial microdissection testicular sperm extraction attempts in our institute were studied. Outcome variables (age, serum follicle-stimulating hormone, luteinizing hormone, testosterone, prolactin, and estradiol) of azoospermic men with nonmosaic Klinefelter syndrome and a successful 2nd surgical sperm retrieval attempt (group A) were compared to those with an unsuccessful 2nd sperm retrieval attempt (group B). Results. Twenty-one patients (75%) had successful sperm recovery at the 2nd microdissection testicular sperm extraction attempt. The mean testosterone level at baseline and before the 1st microdissection testicular sperm extraction attempt was higher in group A than in group B (2.7 vs. 0.9 ng/mL, <math xmlns=http://www.w3.org/1998/Math/MathML id=M1> <mi>p</mi> <mo><</mo> <mn>0.01</mn> </math> , and 3.9 vs. 1.1 ng/mL, <math xmlns=http://www.w3.org/1998/Math/MathML id=M2> <mi>p</mi> <mo>=</mo> <mn>0.02</mn> </math> ). Receiver operating characteristic curve analysis identified the threshold baseline testosterone concentration (1.5 ng/mL) of patients with Klinefelter syndrome in predicting successful 2nd sperm retrieval attempts and revealed positive and negative predictive values of 94.44% and 60%, respectively. Conclusion. Azoospermic men with Klinefelter syndrome presenting with low testosterone levels and successful sperm recovery during the first microdissection testicular sperm extraction procedure are unlikely to retrieve sperm on the 2nd microdissection testicular sperm extraction attempt. Hence, these patients should be properly counseled before sperm retrieval." @default.
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• W4377862042 date "2023-05-23" @default.
• W4377862042 modified "2023-09-24" @default.
• W4377862042 title "Repeat Microdissection Testicular Sperm Extraction in Azoospermic Men with Nonmosaic Klinefelter Syndrome" @default.
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• W4377862042 doi "https://doi.org/10.1155/2023/3955704" @default.
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