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Is the Index Finger and Ring Finger Ratio (2D:4D) Reliable Predictor of Semen Quality?
서해평,김권영,노준 대한비뇨의학회 2010 Investigative and Clinical Urology Vol.51 No.3
Purpose: The purpose of this paper is to test the validity of hypothesis that the index finger and ring finger ratio (2D:4D) is related with men's semen quality. Materials and Methods: We set two groups of healthy young male student (mean age 23.9) who have different 2D:4D ratio from different departments of Chosun University. One group consists of 26 men whose 2D:4D ratio is higher than 1 (mean 1.06), and the other group consists of 33 men whose 2D:4D ratio is lower than 1 (mean 0.94). Their semen was collected by masturbation and examined. Results: A comparative analysis revealed that there is no relation between semen quality and the 2D:4D ratio. The group of 2D:4D≥1 showed a semen volume of 3.66±1.64 ml, on the other hand, the group of 2D:4D<1 showed a semen volume of 3.73±1.40 ml. No statistical correlation was found (p=0.82). The view of sperm count and motile sperm in single ejaculated semen also showed no statistically significance with 2D:4D ratio (p=0.84, p=0.43, respectively). Conclusions: The 2D:4D ratio has no statistically significant correlation with the semen quality of health young male. Thus, measurements of finger length cannot be a reliable indicator of semen quality and testicular function. Purpose: The purpose of this paper is to test the validity of hypothesis that the index finger and ring finger ratio (2D:4D) is related with men's semen quality. Materials and Methods: We set two groups of healthy young male student (mean age 23.9) who have different 2D:4D ratio from different departments of Chosun University. One group consists of 26 men whose 2D:4D ratio is higher than 1 (mean 1.06), and the other group consists of 33 men whose 2D:4D ratio is lower than 1 (mean 0.94). Their semen was collected by masturbation and examined. Results: A comparative analysis revealed that there is no relation between semen quality and the 2D:4D ratio. The group of 2D:4D≥1 showed a semen volume of 3.66±1.64 ml, on the other hand, the group of 2D:4D<1 showed a semen volume of 3.73±1.40 ml. No statistical correlation was found (p=0.82). The view of sperm count and motile sperm in single ejaculated semen also showed no statistically significance with 2D:4D ratio (p=0.84, p=0.43, respectively). Conclusions: The 2D:4D ratio has no statistically significant correlation with the semen quality of health young male. Thus, measurements of finger length cannot be a reliable indicator of semen quality and testicular function.
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서해평,신대은,임동훈,문형윤,김철성 대한비뇨의학회 2009 Investigative and Clinical Urology Vol.50 No.3
Carcinoid tumors are low-grade malignant tumors arising from neuroendocrine cells. Primary renal carcinoid tumors are extremely rare, and only 56 cases have been reported in the literature. Because of the rarity of the lesion, its histogenesis and prognosis are unclear. Here we report a case of a primary renal carcinoid tumor in a 51-year-old man that was found incidentally in a medical examination and was treated by transperitoneal radical nephrectomy.
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