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Seung Choul Yang

Publications and source records attributed to Seung Choul Yang.

5 recordsLinked to original sources
PubMed2006

Long-term effects of ileal conduit urinary diversion on upper urinary tract in bladder cancer.

OBJECTIVES: To evaluate the functional and morphologic changes of the upper urinary tract after radical cystectomy and ileal conduit urinary diversion for bladder cancer. METHODS: Radical cystectomy and ileal conduit urinary diversion were performed in a total of 249 patients with bladder cancer at our hospital from 1980 to 1999. Of the 249 patients, 67 were excluded because of the presence of preoperative lesions in the upper urinary tract or elevated serum creatinine (greater than 1.4 mg/dL). Of the remaining 182 patients, 82 were also excluded because of incomplete follow-up or death less than 5 years after surgery. RESULTS: Of the 249 patients, a total of 100 (40.2%) who had no preoperative lesions in upper urinary tract and normal renal function and survived 5 years or longer were included in this analysis. The median follow-up period was 91 months (range 60 to 193). The serum creatinine was greater than the normal range in 10 patients (10.0%), and radiologic changes in the upper urinary tract were observed in 14 patients (14.0%). They had diabetes mellitus nephropathy (4.0%) or specific comorbidities that could contribute to the deterioration of the upper urinary tract, such as ureteroileal anastomotic stricture (4.0%), chronic pyelonephritis (4.0%), urinary stones (1.0%), and upper urinary tract tumor (1.0%). CONCLUSIONS: The results of our study have shown that the functional and morphologic changes in the upper urinary tract after radical cystectomy and ileal conduit urinary diversion occur in patients with specific comorbidities that could contribute to those changes. Different from previous reports, none of the upper urinary tract changes developed without an obvious cause.

Adult↗
PubMed2004

Video assisted minilaparotomy surgery (VAMS)--live donor nephrectomy: 239 cases.

We have devised a new surgical method of video-assisted minilaparotomy surgery-live donor nephrectomy (VAMS-LDN), which is a hybridized form of laparoscopic and open surgeries that combines the advantages of both. We present the findings of our series of 239 consecutive patients. Since 1993 we have performed 239 successful VAMS-LND. All 239 healthy kidney donors' characteristics and their postoperative courses were retrospectively reviewed and the data were compared to 95 open donor nephrectomies performed during the same period. The mean age and weight of the patients were 37.9 +/- 11.0 years and 62.4 +/- 7.9 kg, respectively. The mean operating time was 154 +/- 41 minutes, which was similar to open donor nephrectomy but shorter than laparoscopic donor nephrectomy. There were no major intraoperative complications except two tears to lumbar veins which required transfusion. The mean warm ischemic time was 2.1 +/- 0.7 minutes, which was equal to open donor nephrectomy. The patients experienced less postoperative pain and recovered quicker than the open donor nephrectomy patients. VAMS-LDN is a safe and minimally invasive technique for live donor nephrectomy, incorporating advantages of both conventional open and laparoscopic methods. We suggest that VAMS-LDN is a viable option for living donor kidney transplantation.

Adult↗
PubMed2003

Video-assisted minilaparotomy in urology.

Minimally invasive surgery has gained wide acceptance as a method of reducing postoperative pain and curtailing the convalescence period. We have devised a modified surgical technique of video-assisted surgery through minilaparotomy (VAMS). This technique is a hybrid of conventional open and laparoscopic surgery that combines the benefits of both techniques by reducing postoperative pain and scarring, as in laparoscopy, but at the same time maintaining the safety of conventional open surgery. Video-assisted procedures have become standard as a result of our experience with 245 consecutive patients operated on between January 1993 and January 2001. The VAMS is a minimally invasive technique that is safe, feasible, standardized, and reproducible with a short learning curve. This technique can be an alternative to open and laparoscopic surgery in daily urologic practice.

Humans↗
PubMed2002

Transutricular seminal vesiculoscopy.

Disorders of the seminal vesicle have been evaluated mainly via imaging techniques. We developed a technique to examine the interior of seminal vesicles endoscopically. In 37 hemospermic patients, transrectal ultrasound (TRUS) or endorectal MRI were performed preoperatively. When the patients had definite abnormalities on the imaging studies and did not improve after medication over a period exceeding 3 months, transutricular seminal vesiculoscopy was performed using a 6F or a 9F rigid ureteroscope. Patients were then followed for at least 3 months. Endoscopic evaluation was also performed in two patients with stage B(1) and D(2) prostate carcinoma. In hemospermic patients, hemorrhage was found in the seminal vesicles or the ejaculatory ducts in 23 (62.2%) and 3 (8.1%), respectively. Calculi were present in the seminal vesicles or ejaculatory ducts in 6 (16.2%) and 2 (5.4%), respectively. In prostate carcinoma patients, seminal vesiculoscopy was similarly informative. Postoperative complications, including epididymitis or retrograde ejaculation, were not observed. Transutricular seminal vesiculoscopy can be performed easily with conventional endoscopic equipment and provides useful information.

Ejaculatory Ducts↗