1.The Role of Pressure-Flofw Study in Differential Diagnosis for Patients with Lower Urinary Tract Symptoms.
Hyeon Kyeon KIM ; Hyeong Gon KIM ; Won Hee PARK
Korean Journal of Urology 2000;41(10):1207-1215
No abstract available.
Diagnosis, Differential*
;
Humans
;
Lower Urinary Tract Symptoms*
2.A Case of Keratinizing Desquamtive Squamous Metaplasia (Cholesteatoma) of Renal pelvis and Upper Ureter.
Soo Kee MIN ; Joon Mee KIM ; Hyeong Gon KIM ; Won Hee PARK
Korean Journal of Urology 2000;41(10):1277-1280
No abstract available.
Kidney Pelvis*
;
Metaplasia*
;
Ureter*
3.Bilateral Acute Retinal Necrosis Syndrome in the Patient with Acquired Immunodeficiency Syndrome.
Journal of the Korean Ophthalmological Society 2003;44(10):2445-2450
PURPOSE: To report one case of bilateral acute retinal necrosis (ARN) syndrome in the patient with acquired immunodeficiency syndrome (AIDS). METHODS: Bilateral retinal necrosis, occlusive vasculitis, vitreous opacity and inflammatory reaction in anterior chamber were noted in a 48-years old man with AIDS. RESULTS: The patient was diagnosed as bilateral ARN, but did not respond to intravenous acyclovir therapy. However, the patient was successfully treated with intravenous ganciclovir at a dosage of 5 mg/kg/day, which resulted in resolution of retinal lesion and improvement of visual acuity without complications such as retinal detachment. CONCLUSIONS: CMV retinitis, progressive outer retinal necrosis, ocular syphilis should be considered in the differential diagnosis of ARN syndrome in the AIDS patients and alternative treatment with ganciclovir should be considered promptly when the patient do not respond to acyclovir therapy.
Acquired Immunodeficiency Syndrome*
;
Acyclovir
;
Anterior Chamber
;
Diagnosis, Differential
;
Ganciclovir
;
Humans
;
Middle Aged
;
Necrosis
;
Retinal Detachment
;
Retinal Necrosis Syndrome, Acute*
;
Retinaldehyde
;
Retinitis
;
Syphilis
;
Vasculitis
;
Visual Acuity
4.Regional Dirfferences in The Stereometric Parameters of Optic Nerve Head in Primary Open Angle Glaucoma.
Hyeong Gon YU ; Dong Myung KIM
Journal of the Korean Ophthalmological Society 1995;36(6):1056-1060
To evaluate the regional differences in the stereometric parameters of optic nerve head in primary open angle glaucoma, we retrieved rim area, disc area, cup volume/disc area, and maximum depth in 6 predefined segements using mean topography measured with Heidelberg Retina Tomograph. Eleven eyes from 11 primary open angle glaucoma patients, whose mean defect in Humphrey C30-2 visual field was -4.2 +/- 2.6dB and intraocular pressure was 18.7 +/- 3.2mmHg, were enrolled in this study. The values of rim area/disc area were significantly different between segments(p<0.05), and increased in the order of temporal. temporoinferior, temporosuperior, nasal nasosuperior, and nasoinferior segment. The values of cup volume/disc area were also significantly different between segments(p<0.05), and decreased in the order of temporoinferior, temporosuperior, temporal, nasosuperior, nasal, and nasoinferior segment. However, the values of maximum depth were not significantly different between segments. These results suggest that optic nerve head damage in primary open angle glaucoma may be different according to the region.
Glaucoma, Open-Angle*
;
Humans
;
Intraocular Pressure
;
Optic Disk*
;
Optic Nerve*
;
Retina
;
Visual Fields
5.Primary Cryptococcal Epidydimo-orchitis in a Healthy Man.
Hyeong Gon KIM ; Su Min OH ; Won Hee PARK
Korean Journal of Urology 2004;45(6):616-618
Cryptococcus is native to the environment and thrives in any type of environment inhabited by birds. Cryptococcal genito-urinary infection has been reported in immunnocompromised patients and can involve the adrenal gland, kidney, prostate, or penis. To our knowledge, there have been no reports of cases where cryptococcal epididymo-orchitis infects an uncompromised healthy host. Here, we report a case of primary cryptococcal epididymo-orchitis in a healthy male.
Adrenal Glands
;
Birds
;
Cryptococcus
;
Humans
;
Kidney
;
Male
;
Orchitis
;
Penis
;
Prostate
6.Ejaculatory Duct Obstruction(EDO).
Hyeong Gon KIM ; Jae Seung PAICK
Korean Journal of Urology 1994;35(10):1101-1107
The diagnosis of ejaculatory duct obstruction(EDO) may be suspected on clinical grounds from the characteristic seminal analysis and is being confirmed by vasoseminal vesiculography. Through the analysis of our experienced cases, we defined the new characteristics of EDO in semen analysis and we investigated the role of TRUS in diagnosing this entity. We analyzed 23 EDO patients we experienced during the last 5 years. All cases were diagnosed by vasoseminal vesiculography. In last 16 patients, transrectal ultrasonography(TRUS) was performed before vasoseminal vesiculography and 15 patients(94% ) were suspected to be EDO. The cause of EDO were identified as midline cyst in 7 patients, Wolffian malformation in 4, previous genitourinary infection in 5, and unknown causes in 7. We have treated 21 patients. Fourteen patients were treated by transurethral resection (TUR), 5 patients by forceful lavage through vasotomy site, 2 patients by transseptal vasovasostomy. Eight (57%) of 14 patients treated by TUR achieved an improvement in semen volume and/or semen quality and 3 patients( 10% ) produced pregnancy. Six(86%) of 7 patients caused by midline cyst achieved improvement in semen parameters and 3 patients(43% ) produced pregnancy. Overall, ten of 21(48%) patients achieved improvement in semen characteristics, 3 patients(12%) produced pregnancy. Among our cases, six patients presented with a subtle and mild abnormalities in seminal fluid Their sperm density was above 10xl0'/ml while ejaculated volume was low to normal. Their sperm motility was consistently diminished(less than 35%) and semen fructose was low(less than 140). TRUS enabled to detect midline cyst or seminal vesicle dilatation in these partial EDO cases before vasoseminal vesiculography. Based on our experience of EDO we suggest that TRUS is the initial diagnostic procedure if infertile patients were suspected as EDO according to semen parameters. We suggest that if semen fructose was low in the athenospermic patient who has high sperm density( >0.000001/ml), TRUS should be performed.
Diagnosis
;
Dilatation
;
Ejaculatory Ducts*
;
Fructose
;
Humans
;
Infertility, Male
;
Male
;
Pregnancy
;
Semen
;
Semen Analysis
;
Seminal Vesicles
;
Sperm Motility
;
Spermatozoa
;
Therapeutic Irrigation
;
Vasovasostomy
7.Current Evaluation and Treatment of Nocturia.
Hyoung Keun PARK ; Hyeong Gon KIM
Korean Journal of Urology 2013;54(8):492-498
Nocturia is usually considered to be just one of the symptoms included with lower urinary tract symptoms (LUTS) and is treated with therapy based on LUTS. Recent research suggests, however, that nocturia is not merely a simple symptom of LUTS but is a multifactorial condition with many contributing etiological factors. The causes of nocturia can be classified into bladder storage problems, increased urine output, sleep disturbance problems, and other potential diseases. The frequency-volume chart (FVC) is very important in evaluating and diagnosing nocturia. Patients usually record the volume and timing of voids for a period of 1 to 3 days on the FVC. The FVC data can provide information on voiding patterns and clues about the etiology and treatment of nocturia. It is doubtful that alpha-blockers will have clinical significance for treatment because the difference in nocturia episodes between treatment with alpha-blockers and placebo is too small. Antimuscarinics also exert no effect on nocturnal polyuria, and the evidence supporting the efficacy of antimuscarinics for the treatment of nocturia is limited. However, several randomized placebo-controlled trials have shown the efficacy of oral desmopressin in the treatment of adults with nocturia. Short-acting hypnotics may be helpful for patients with sleep disturbances. Although surgical or interventional therapy is not indicated for nocturia, transurethral resection of the prostate appears to confer a greater improvement in benign prostatic hyperplasia symptoms including nocturia. The management of nocturia may require a team approach by making optimal use of multidisciplinary expertise.
Adult
;
Deamino Arginine Vasopressin
;
Humans
;
Hypnotics and Sedatives
;
Lower Urinary Tract Symptoms
;
Muscarinic Antagonists
;
Nocturia
;
Polyuria
;
Prostate
;
Prostatic Hyperplasia
;
Urinary Bladder
8.The Clinical Applications of Multifocal Electroretinogram in Diabetic Retinopathy.
Journal of the Korean Ophthalmological Society 2004;45(1):64-68
PURPOSE: To investigate the correlation between the severity of diabetic retinopathy and the responses of multifocal electroretinogram (mERG). METHODS: The amplitude and peak time of mERG was evaluated in a group of 88 diabetics and 20 control subjects. The severity of diabetic retinopathy was determined according to the ETDRS scale using color fundus photographs and fluorescein angiograms. RESULTS: The amplitudes of the summed mERG and the central seven hexagons were significantly lower in diabetic patients compared with control subjects, and the more severe the diabetic retinopathy was , the less the amplitude was (P<0.05). The peak times of the summed mERG and the central seven hexagons were significantly delayed in diabetic patients, and the peak time was increased in parallel with the severity of retinopathy (P<0.05). These significant correlations between mERG responses and the severity of diabetic retinopathy was maintained even after the exclusion of patients with diabetic macular edema. CONCLUSIONS: The macular function in diabetic patients is correlated with the grade of diabetic retinopathy, and mERG may have a clinical application in evaluating macular function in these patients.
Diabetic Retinopathy*
;
Fluorescein
;
Humans
;
Macular Edema
9.The Anti-angiogenic Effect of Chlorogenic Acid on Choroidal Neovascularization.
Cinoo KIM ; Hyeong Gon YU ; Joonhong SOHN
Korean Journal of Ophthalmology 2010;24(3):163-168
PURPOSE: To evaluate the inhibitory effect of chlorogenic acid on laser-induced choroidal neovascularization (CNV) in a rat model. METHODS: Intraperitoneal injection of chlorogenic acid (10 mg/kg) was inititated one day prior to laser photocoagulation and continued for eight days. Eyes were removed 14 days after laser photocoagulation. Fluorescein angiography was employed at seven and 14 days to assess the CNV lesions, and histological examination was performed. Quantification of CNV size and leakage were performed both in histological sections and fluorescein angiography in order to compare the inhibitory effects of chlorogenic acid on CNV with the results of the control. RESULTS: Histological analysis showed no significant difference in CNV size between the treated and control groups. However, CNV leakage on fluorescein angiography had significantly decreased in the chlorogenic acid-treated group at 14 days after laser photocoagulation compared with that of the control group. In addition, CNV size on fluorescein angiography had significantly decreased in the treated group at seven and 14 days. CONCLUSIONS: These results suggest that chlorogenic acid has anti-angiogenic effects on CNV and may be useful as an inhibitor in the treatment or prevention of neovascular age-related macular degeneration.
Angiogenesis Inhibitors/*administration & dosage
;
Animals
;
Capillary Permeability/drug effects
;
Chlorogenic Acid/*administration & dosage
;
Choroid/pathology
;
Choroidal Neovascularization/diagnosis/etiology/*physiopathology
;
Fluorescein Angiography
;
Injections, Intraperitoneal
;
Laser Coagulation
;
Radiation Injuries
;
Rats
;
Rats, Inbred BN
10.Clinical Features in Korean Patients with Sarcoid Uveitis.
Tae Wan KIM ; Hum CHUNG ; Hyeong Gon YU
Journal of the Korean Ophthalmological Society 2008;49(9):1483-1490
PURPOSE: To investigate the clinical features of Korean patients with sarcoid uveitis. METHODS: The medical records of patients with endogenous uveitis who were recruited from the uveitis clinic at Seoul National University Hospital were reviewed. Sex, age at presentation, ocular symptoms and signs, treatment, complications, and the rate of recurrence were analyzed. RESULTS: Of 440 patients with endogenous uveitis, 31 (7.1%) with sarcoidosis were included. The mean age at onset was 54.5 years. Sarcoidosis patients with uveitis tended to be older than those without uveitis (44.1 years). Uveitis was the primary manifestation of sarcoidosis in 16 of 31 patients (51.6%). Anterior uveitis was the most common in terms of the anatomic location of inflammation (54.8%), and posterior involvement (38.7%) was not rare. Systemic corticosteroid therapy was administered to 28 patients (90.3%). Five patients (16.1%) received corticosteroids combined with immunosuppressive agents. CONCLUSIONS: Sarcoid uveitis is not a rare etiology of endogenous uveitis. Topical or systemic corticosteroids could control inflammation in most cases, but immunosuppressive agents are needed in a small percentage of patients. Steroids combined with immunosuppressive agents can prevent severe visual losses in such patients.
Adrenal Cortex Hormones
;
Humans
;
Immunosuppressive Agents
;
Inflammation
;
Medical Records
;
Recurrence
;
Sarcoidosis
;
Steroids
;
Uveitis
;
Uveitis, Anterior