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Associations of Ultrasonographic Features with Scrotal Pain after Vasectomy
조승훈,민승기,Seung Tae Lee 대한비뇨의학회 2011 Investigative and Clinical Urology Vol.52 No.11
Purpose: Scrotal discomfort is a recognized complication of vasectomy, but the natural history and incidence of this problem are uncertain. The typical ultrasonographic changes after a vasectomy primarily include epididymal thickening and epididymal tubular ectasia with diminished blood flow in the epididymis. We prospectively studied the differences in the ultrasonographic features of the testis and epididymis between patients with and those without scrotal discomfort after vasectomy. Materials and Methods: We prospectively assessed pain scores in 178 men who underwent outpatient bilateral no-scalpel vasectomy at our institution between January 2009 and December 2010. At 2 months after vasectomy, we evaluated the postoperative scrotal pain questionnaire and scrotal ultrasonographic features for patients who returned for semen analysis. On the basis of the scrotal information, we investigated the potential relationships between scrotal pain or discomfort and scrotal ultrasonographic features of both testes and epididymides. Results: The average age of the 114 men was 36.3 years (range, 29 to 53 years). group 1 (n=23), which reported scrotal pain or discomfort, showed no significant mean differences in the maximal diameter of the head of the epididymis when compared with group 2 (n=91), who had no scrotal pain or discomfort. Also, the width of the body of the epididymis between the two groups showed no significant differences. Conclusions: There were no significant differences in ultrasonographic features according to the presence of chronic scrotal discomfort after vasectomy. Therefore, causes of scrotal pain other than obstruction may need to be considered after vasectomy. Purpose: Scrotal discomfort is a recognized complication of vasectomy, but the natural history and incidence of this problem are uncertain. The typical ultrasonographic changes after a vasectomy primarily include epididymal thickening and epididymal tubular ectasia with diminished blood flow in the epididymis. We prospectively studied the differences in the ultrasonographic features of the testis and epididymis between patients with and those without scrotal discomfort after vasectomy. Materials and Methods: We prospectively assessed pain scores in 178 men who underwent outpatient bilateral no-scalpel vasectomy at our institution between January 2009 and December 2010. At 2 months after vasectomy, we evaluated the postoperative scrotal pain questionnaire and scrotal ultrasonographic features for patients who returned for semen analysis. On the basis of the scrotal information, we investigated the potential relationships between scrotal pain or discomfort and scrotal ultrasonographic features of both testes and epididymides. Results: The average age of the 114 men was 36.3 years (range, 29 to 53 years). group 1 (n=23), which reported scrotal pain or discomfort, showed no significant mean differences in the maximal diameter of the head of the epididymis when compared with group 2 (n=91), who had no scrotal pain or discomfort. Also, the width of the body of the epididymis between the two groups showed no significant differences. Conclusions: There were no significant differences in ultrasonographic features according to the presence of chronic scrotal discomfort after vasectomy. Therefore, causes of scrotal pain other than obstruction may need to be considered after vasectomy.
조승훈,김선일,박해영 대한비뇨의학회 2005 Investigative and Clinical Urology Vol.46 No.7
Purpose: The systematic routine sextant biopsy technique has been widely used in diagnosing prostatic cancer. But this technique may not include an adequate sampling of the prostate. We conducted a prospective study to evaluate the efficacy of the routine sextant prostate biopsy plus selective lesion-directed prostate biopsy method. Materials and Methods: 120 men with abnormal digital rectal examination (DRE) and/or prostate-specific antigen(PSA) ≥4.0ng/ml underwent a total of 122 routine sextant prostate biopsy(RSB) only or RSB plus selective lesion-directed prostate biopsy (SLB). SLB included one of the followings: digital-guided biopsy, hypoechoic lesion-directed biopsy or transitional zone biopsy if there were palpable nodule on DRE, hypoechoic lesion on transrectal ultrasonography(TRUS), or previous history of negative biopsy, respectively. Results: The mean age of patients was 67.6 years(43-86) and the mean PSA level was 7.63ng/ml(0.47-over 155). 37.7% had cancer detected on biopsy. Detection rate in RSB plus SLB group(53.6%, 30 of 56) was higher than in RSB group(24.2%, 16 of 66). In RSB plus SLB group, 4 had cancer detected in SLB core(s) only. The positive rate of biopsy core was higher in the SLB core(72.9%(35/48)) than in the RSB core(54.4%(98/180))(p= 0.022). Conclusions: In the presence of a suspicious lesion or the history of a previously negative biopsy, the addition of SLB or transitional zone biopsy may increase the detection rate of prostatic cancer.
조승훈,민승기,이승태,이명진,최재영 대한남성과학회 2009 The World Journal of Men's Health Vol.27 No.3
Segmental testicular infarction is a rare cause of acute scrotum. Its etiology is not well defined and it can be clinically confused with a testicular tumor. Imaging studies play an important role in the preoperative diagnosis, with a Color doppler ultrasonography as the investigation of choice although magnetic resonance imaging (MRI) can be auseful in doubtful cases. We report a case of segmental testicular infarction treated with partial orchiectomy seen in a 58-year-old man with right scrotal pain.
조승훈,서정배,문용호,Cho, Seung Hoon,Suh, Jeong Bae,Moon, Yong Ho 대한임베디드공학회 2011 대한임베디드공학회논문지 Vol.6 No.4
In this paper, we propose a security-enhanced storing method for the voice data obtained during the flight. When an emergency occurs during flight, the flight data in the storage device such as DTS or Blackbox can be exposed to antagonist or enemy. Currently, zeroize function is embedded in these devices in order to prevent this situation. However, this could not be operated if the system is malfunctioned or the pilot is wounded in the emergency. In order to solve this problem, the voice data compressed by the ADPCM is encrypted in the proposed method composed of the AES algorithm and a reordering method. The simulation results show that the security for the voice date is further enhanced due to the proposed method.