1.Clinical Results of Transurethral Resection for the Benign Prostatic Hypertrophy -Significance of Suprapubic Cystostomy before Transurethral Resection-.
Korean Journal of Urology 1987;28(5):634-638
A clinical observation was made on 96 cases of transurethral resection for the benign prostatic hypertrophy, admitted during the period of 3 years from January 1984 to December 1986. Previous to the transurethral resection of prostate, the suprapubic cystostomy was accomplished in 38 cases among them and following advantageous results were obtained. 1. Suprapubic cystostomy before TURP provides better endoscopic vision by continuous flow of irrigating fluid to permit no interrupted resection. 2. By eliminating the time spent for evacuation of the bladder, eye accommodation and reestablishment of surgical land marks, it permits transurethral resection of larger gland, within recognized safety guidelines. 3. It tends to minimize and prevent absorptive complications by lessening intravesical pressure. 4. It decreases operative risk by lessening operative time and the volume of fluid absorbed. 5. It provides an alternative route of irrigation and drainage intraoperatively and postoperatively.
Cystostomy*
;
Drainage
;
Operative Time
;
Prostatic Hyperplasia*
;
Transurethral Resection of Prostate
;
Urinary Bladder
2.A Case of Fournier's Gangrene.
Ill Seuk CHOI ; Duck Ha KIM ; Bo Hyun HAN
Korean Journal of Dermatology 1988;26(2):212-216
Fournier's gangrene is a fulminating gangrene of the male genitalia. It is associated with severe systemic toxic effect and a high motality rate, and it requires early diagnosis and intensive care with surgical intervention. We report a case of Fournier's gangrene in 33-year-old man, who showed marked swelling and necrosis of the scrotum, and extending cellulitis on the right flank and chest. With prompt excision of all the gangrenous scrotal skin and drainage incisions made on the flank and chest, the healing was successful.
Adult
;
Cellulitis
;
Drainage
;
Early Diagnosis
;
Fournier Gangrene*
;
Gangrene
;
Genitalia, Male
;
Humans
;
Critical Care
;
Male
;
Necrosis
;
Scrotum
;
Skin
;
Thorax
3.Significance of Resistive index in Renal Transplantation.
Hyun Og SONG ; In Gi SEONG ; Bo Hyun HAN
Korean Journal of Urology 1995;36(8):843-848
The increasing use and availability of renal transplantation has resulted in a demand for noninvasive methods to study possible complications. One of the most serious adverse reactions is acute rejection, a possibly reversible cause of transplant failure if treated promptly. Sixty-six donors and recipients were evaluated by duplex Doppler examination of intrarenal arteries. A simplified formula, resistive index(RI) ([peak systolic frequency shift-lowest diastolic frequency shift]/[peak systolic frequency shift]), were used to diagnose rejection. All RI values of donors were within normal limit. RI values of recipients were not significantly different according to the number of renal artery and the ischemic time during operation. With a RI greater than 0.90, a 100% positive predictive value was obtained for the diagnosis of acute rejection. A 88% positive predictive value of acute rejection was obtained with a RI greater than 0.80. A value less than 0.70 was unlikely to be rejection(negative predictive value, 95%). The results suggest that the duplex Doppler examination and the resistive index obtained by simple analysis of the wave form would be used as a valuable noninvasive method for the detection of acute renal transplant rejection. The findings of Doppler examination are not necessarily pathognomonic for one specific process, but they can aid the clinician in deciding the kind of treatment necessary and the need for biopsy.
Arteries
;
Biopsy
;
Diagnosis
;
Graft Rejection
;
Humans
;
Kidney Transplantation*
;
Renal Artery
;
Tissue Donors
4.Transrectal Ultrasonography in Female Stress Urinary Incontinence.
Jong Kwan LEE ; In Gi SEONG ; Bo Hyun HAN
Korean Journal of Urology 1997;38(9):979-984
Radiologic chain cystourethrography for stress urinary incontinence (SUI) has several disadvantages including the risk of excessive radiation, the time required for the test, and the discomfort of the patients. Nowadays it is widely accepted that transrectal ultrasonography for evaluating bladder and urethra provides similar information about SUI comparing with the conventional radiographic examination. We evaluated the effectiveness of transrectal ultrasonography in the diagnosis of SUI in 30 women with SUI and in normal 20 women as a control. The results of evaluation were as follows: 1. Mean age was 52.9 in SUI group and 48.5 in control group, and mean parity was 2.8 in SUI group and 3 In control group. 2. According to the symptom grading by Stamey, 8 patients (27%) were Grade I and 22 (73%) were Grade II. 3. The mean value of posterior urethrovesical angle (PUVA) at resting state was 139 +/- 14.7 degrees in control group and 145 +/- 15.2 degrees in SUI group (p>0.05). 4. The mean value of PUVA at strain state was 146 +/- 7.9 degrees in control group and 169 +/- 12.1 degrees in SUI group (p<0.05). 5, Bladder neck descent was 7.3 +/- 2.7 mm (mean+/-SD.) in control group and 13.7+/-6.2 mm in SUI group (p<0.05). 6. Diagnostic criteria of SUI in transrectal ultrasonography are more than 149.5 degrees in PUVA at strain state, and more than 9.1 millimeter in bladder neck descent. 7. Sensitivity and specificity of transrectal ultrasonography in the diagnosis of SUI were 86% and 80% in PUVA at strain state, 80% and 80% in bladder neck descent, respectively. 8. There was significant change of transrectal ultrasonographic finding in pre and post-bladder neck suspension (p<0.05). In conclusion, transrectal ultrasonography is simple, non-invasive, not shameful, and free of radiation, so might be a useful diagnostic method in female SUI.
Diagnosis
;
Female*
;
Humans
;
Neck
;
Parity
;
Sensitivity and Specificity
;
Shame
;
Ultrasonography*
;
Urethra
;
Urinary Bladder
;
Urinary Incontinence*
5.The Use of Dual Energy X-ray Absorptiometry in the Prediction of Stone Fragility in Extracorporeal Shock Wave Lithotripsy.
Hee Jong KIM ; Jeong Oh LEE ; Bo Hyun HAN
Korean Journal of Urology 2006;47(11):1210-1219
Purpose: The aim of this study was to determine whether the stone mineral content (SMC) and stone mineral density (SMD), as measured by dual energy X-ray absorptiometry, can predict the stone fragility in extracorporeal shock wave lithotripsy (ESWL). Materials and Methods: In the experimental study, the stone size, weight, SMC and SMD of 111 urinary calculi, obtained by open surgery, were measured. The SMC and SMD were measured using dual energy X-ray absorptiometry, which is the gold standard for measuring the bone mineral content and density. The number of shock waves necessary for full fragmentation was accepted as a measure of the stone fragility in ESWL (EDAP-sonolith Praktis). In the clinical study, the stone size, SMC and SMD were measured in a total of 48 patients with a solitary renal stone of less than 3cm. Prior to ESWL all patients underwent dual energy X-ray absorptiometry to calculate the SMC and SMD. The correlations between the number of total shock waves and the stone size, SMC and SMD were analyzed. Results: In the experimental study, the stone size, stone weight, SMC and SMD values correlated with total shock waves, with a correlation coefficients (R) of 0.79, 0.95, 0.99 and 0.86, respectively (n=111). In the clinical study, the mean stone size, mean MC and MD values differed significantly between the clinically successful and failed ESWL (n=36 and n=12), respectively (p=0.0002, p=0.004, p=0.004). On a simple regression analysis, the SMC (R2=0.74), SMD (R2=0.56) and stone size (R2=0.51) were significant factors in predicting the number of shock waves. Using the receiver operating characteristic curves for comparing the stone size, SMC and SMD in relation to the number of shock waves, the areas under the respective curves were 0.79, 0.84 and 0.81 with cut-off values of 1.8, 1.4 and 1.8. Conclusions: The stone size, SMC and SMD measured by dual energy x-ray absorptiometry may provide a prediction of the outcome of patients prior to ESWL treatment. Patients with high SMC (greater than 1.4gm) could be recommended for percutaneous nephrolithotripsy or another treatment modality, thus, avoiding the unnecessary cost of prior ESWL.
Absorptiometry, Photon*
;
Bone Density
;
Humans
;
Lithotripsy*
;
ROC Curve
;
Shock*
;
Urinary Calculi
6.A study on the comparision of various imaging methods for the staging of renal cell carcinoma.
Korean Journal of Urology 1993;34(5):805-810
The diagnostic significance of ultrasonography, computed tomography and magnetic resonance imaging for predicting the stage of tumors was evaluated by comparing their results with preoperative and histopathologic findings. The 24 patients who were diagnosed as renal cell carcinoma by histopathologic finding have taken preoperative examination such as ultrasonography, computed tomography. Additionally, magnetic resonance imaging was performed in 15 patients among them. The T stage was determined correctly by magnetic resonance imaging in 87% of the cases, by computed tomography in 80%. We suggested that a computed tomography is reliable imaging method for evaluating the T,N category preoperatively, but magnetic resonance imaging is more sensitive than a computed tomography in predicting the stage of renal cell carcinoma and a magnetic resonance imaging can replace the computed tomography.
Carcinoma, Renal Cell*
;
Humans
;
Magnetic Resonance Imaging
;
Ultrasonography
7.A Clinical Study about Operator's Skilled Experience in Transurethral Resection of Benign Prostatic Hyperplasia.
Do Kyung LEE ; In Gi SEONG ; Bo Hyun HAN
Korean Journal of Urology 1994;35(6):626-631
A clinical observation was made on 261 cases of transurethral resection of benign prostatic hyperplasia (TURP) by the same operator, admitted during the period of 10 years from January 1984 to December 1993. The objective cases were divided by every 50 cases into 5 groups, and the operation results were compared in each group respectively. The results showed the tendency of increasing weight of resected prostatic tissue and decreasing operating time, consumed time for the resection of l gm of prostatic tissue, blood loss during operation, duration of postoperative gross hematuria and incidence of postoperatively complicated cases, as experiencing more TURP cases. The operation results were markedly improved and stabilized after experience of 150 cases of TURP. Our study suggests that TUR technique of the operator is improving step by step by accumulating experiences of TURP and the expert and stabilized skillful technique will be achieved after experience of more than 150 cases of TURP but the improvement of TUR technique may be accelerated by aid of better TUR instrument and teaching system.
Hematuria
;
Incidence
;
Prostatic Hyperplasia*
;
Transurethral Resection of Prostate
8.Clinical Experience of Upper Ureterolithotomy by Posterior Lumbotomy.
Korean Journal of Urology 1986;27(5):637-640
The posterior lumbotomy was a useful approached for removal of a small kidney, for bilateral nephrectomy in patients with chronic renal failure, for pyeloplasty, for pyelolithotomy when a stone was filled the pelvis and was not able to migrated, or for an upper ureterolithotomy when the stone was firmly impacted. During a 32 month interval 19 patients underwent upper ureterolithotomy through the posterior lumbotomy approach. The intraoperative course and postoperative performance were compared to the patients operated upon using the standard flank incision. Our analysis established the superiority of the posterior lumbotomy incision for all factors evaluated, especially postoperative drainage, analgesic use and postoperative hospitalization.
Drainage
;
Hospitalization
;
Humans
;
Kidney
;
Kidney Failure, Chronic
;
Nephrectomy
;
Pelvis
9.The Usefulness of Endo-rectal Coil MRI in the Staging of Clinically Localized Prostate Cancer.
Eun Tak KIM ; Seong Soo JEON ; Soo Eung CHAI ; Bo Hyun KIM ; Han Yong CHOI
Korean Journal of Urology 2001;42(5):500-505
PURPOSE: We evaluated the ability of endo-rectal coil MRI (ER-MRI) to predict the local pathological stage of prostate cancer prior to radical prostatectomy and compared the results with those of transrectal ultrasonography (TRUS). MATERIALS AND METHODS: ER-MRI using high field magnets (1.5 Tesla) were performed in 22 patients (mean age 62.8 years, range 51-73) with clinically localized prostate cancer before radical prostatectomy. Of the 22 patients, 17 patients were also assessed by TRUS. The results of the imaging techniques were compared with the post-operative histopathological findings. As one patient with pelvic lymph node metastasis, which was detected on frozen-section examination during surgery, was spared radical prostatectomy, the final evaluation included 21 patients. RESULTS: DSeven of the 21 patients (33%) were found to have extraprostatic extension (EPE), and 5 had seminal vesicle invasion (SVI). The sensitivity and specificity for diagnosing EPE using ER-MRI were 62.5% and 84.6%, respectively, and 16.7% and 100% with TRUS. The sensitivity and specificity for diagnosing SVI were 80.0% and 93.8%, respectively with ER-MRI, and 0% and 92.3% with TRUS. The accuracy of predicting SVI was 90.5% with ER-MRI compared to 70.6% with TRUS. CONCLUSIONS: ER-MRI was significantly better than TRUS for determining the local extent of prostatic cancer and for prediction of SVI in the preoperative staging of clinically localized prostate cancer.
Humans
;
Lymph Nodes
;
Magnetic Resonance Imaging*
;
Neoplasm Metastasis
;
Prostate*
;
Prostatectomy
;
Prostatic Neoplasms*
;
Seminal Vesicles
;
Sensitivity and Specificity
;
Ultrasonography
10.The Renal Function and the Preoperative Predictive Factors Influencing Renal Function after Living Donor Nephrectomy.
Kwi Ho KANG ; Jeong Oh LEE ; Bo Hyun HAN
Korean Journal of Urology 2004;45(2):149-157
PURPOSE: The aim of this study is to identify postoperative renal function and preoperative factors that can predict renal impairment after living donor nephrectomy. MATERIALS AND METHODS: We studied 172 patients undergoing living donor nephrectomy for kidney transplantation (115 males, 57 females). We analyzed the renal function measured by serum creatinine and the 99mTc- diethylenetriamine penta-acetic acid (DTPA) renal scan. Using a univariate and multivariate analysis, we also analyzed multiple independent variables for the remaining renal function following living donor nephrectomy, such as serum creatinine, glomerular filtration rate (GFR), age, sex, duration of follow-up, blood pressure, body mass index (BMI), serum calcium, serum phosphate, serum uric acid. RESULTS: The mean age of the donors was 34 years, and the mean duration of the follow-ups was 11 months. The mean serum creatinine at 11 months after kidney donation was increased compared to preoperative creatinine (1.26mg/dl vs. 0.93mg/dl), and significantly greater in the males than in the females (1.36mg/dl vs. 1.09mg/dl). Mean GFR measured by the 99mTc- DTPA renal scan at 11 months after kidney donation was 69.2 ml/min/ 1.73m2 and similar for men and women (72.3ml/min/1.73m2 vs. 68.3ml/ min/1.73m2). The univariate analysis showed that preoperative creatinine was significantly associated with postoperative creatinine only (p<0.001), and age and sex were associated with the change in creatinine (p=0.046, p<0.001). The univariate analysis also showed that preoperative GFR and age were significantly associated with postoperative GFR (p<0.001, p<0.001), and age was associated with compensatory change in GFR (p= 0.008). The multivariate analysis showed that preoperative GFR was the primary predictive factor of postoperative GFR (r=0.73, p<0.001), and age was an independent secondary predictive factor (r= 0.67, p<0.001). CONCLUSIONS: These results suggest that postoperative renal function has been preserved in kidney donors, and preoperative creatinine, preoperative GFR, and age at donation were the important predictive factors of renal function after living donor nephrectomy.
Blood Pressure
;
Body Mass Index
;
Calcium
;
Creatinine
;
Female
;
Follow-Up Studies
;
Glomerular Filtration Rate
;
Humans
;
Kidney
;
Kidney Transplantation
;
Living Donors*
;
Male
;
Multivariate Analysis
;
Nephrectomy*
;
Pentetic Acid
;
Tissue Donors
;
Uric Acid