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.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
5.Analysis of Intraocular Chemokine and Chemokine Receptor in Patients with HLA-B27-associated Anterior Uveitis.
Tae Wan KIM ; Hum CHUNG ; Hyeong Gon YU
Journal of the Korean Ophthalmological Society 2008;49(9):1475-1482
PURPOSE: To evaluate the expression of chemokine and chemokine receptors in the aqueous humor (AH) of patients with recurrent anterior uveitis (AU) in terms of HLA-B-27-association. METHODS: Patients with endogenous uveitis were recruited from the uveitis clinic at Seoul National University Hospital. AH and peripheral blood (PB) were obtained from each patient. The expression of chemokine receptors in T-cells from AH and PB was measured using flow cytometric analysis. Interleukin (IL)-8, interferon-gammainducible protein (IP)-10, and regulated-on-expression, normal T-cell expressed and secreted (RANTES) levels of PB and AH were measured. The expression of chemokine receptor and chemokine levels in PB and AH were compared between HLA-B27-associated AU and idiopathic AU patients. RESULTS: Seventeen patients with HLA-B27-associated AU, 14 patients with idiopathic AU and 5 healthy controls were included in this study. IL-8 and IP-10 levels of AH were shown to be increased more than in PB, and intraocular concentrations of IL-8 and IP-10 were higher in patients with HLA-B27-associated AU than in idiopathic AU patients. RANTES levels in AH were significantly lower than in PB for all groups. In all groups, the expression of chemokine receptor in AH increased more than in PB. CONCLUSIONS: The results from this study show chemokine may play an important role in inflammation in patients with AU. This implies that the chemokine environment may be different in terms of HLA-B-27-association.
Aqueous Humor
;
Chemokine CCL5
;
Humans
;
Inflammation
;
Interleukin-8
;
Interleukins
;
Receptors, Chemokine
;
T-Lymphocytes
;
Uveitis
;
Uveitis, Anterior
6.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
7.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
8.A study on the anatomical morphology of the minor fissure.
Hyeong Gon LEE ; Hyung Jin KIM ; Jin Jong YOU ; In Oak AHN ; Sung Hoon CHUNG
Journal of the Korean Radiological Society 1993;29(4):723-729
The minor fissure is an important anatomical landmark in the localization of the pulmonary diseases. For the evaluation of the normal feature of the minor fissure, we analyzed the high-resolution computed tomography (CT) scans in 51 normal patients. The purposes of this study are to evaluate the normal appearance of the minor fissure on high-resolution CT scans and to compare it with that on the coventional CT and chest radiographs. We analysed the morphologic feature of the minor fissure on the high-resolution CT scans in 51 normal patients, and compared it with that on the conventional CT scans. On the high-resolution CT scans, we particularly paid attention to the completeness and types according to Berkmen classification. And finally, we compared the types determined by the high-resolution CT scans with those by the plain radiographs. In most patients (n=47), the minor fissure was seen as a hyperattenuating line or hand on the high-resolution CT scans. In contrast, it was mostly seen as a lucent zone on the conventional CT scans (n=44). Of 47 patients having a hyperattenuating line or band on the high resolution CT scans, the minor fissure was considered to be complete in 17 patients (36%), and incomplete in 30 patients (64%), who had defect at medial portion of the minor fissure. The most common type of the minor fissure seen on the high-resolution CT scans was type I variety (n=23), followed by type IIa (n=10) and type II (n=8). We could not determine the type in six patients. The type determined by the high resolution CT scans was highly well correlated with that determined by the plain radiographs (p<0.05). In conclusion, the minor fissure was seen on CT studies as variable appearances and high-resolution CT scans were superior to the conventional CT scans in the evaluation of the minor fissure. The type of the minor fissure determined by the high-resolution CT scans were well correlated with those seen on the radiographs.
Classification
;
Hand
;
Humans
;
Lung Diseases
;
Radiography, Thoracic
;
Tomography, X-Ray Computed
9.A study on the anatomical morphology of the minor fissure.
Hyeong Gon LEE ; Hyung Jin KIM ; Jin Jong YOU ; In Oak AHN ; Sung Hoon CHUNG
Journal of the Korean Radiological Society 1993;29(4):723-729
The minor fissure is an important anatomical landmark in the localization of the pulmonary diseases. For the evaluation of the normal feature of the minor fissure, we analyzed the high-resolution computed tomography (CT) scans in 51 normal patients. The purposes of this study are to evaluate the normal appearance of the minor fissure on high-resolution CT scans and to compare it with that on the coventional CT and chest radiographs. We analysed the morphologic feature of the minor fissure on the high-resolution CT scans in 51 normal patients, and compared it with that on the conventional CT scans. On the high-resolution CT scans, we particularly paid attention to the completeness and types according to Berkmen classification. And finally, we compared the types determined by the high-resolution CT scans with those by the plain radiographs. In most patients (n=47), the minor fissure was seen as a hyperattenuating line or hand on the high-resolution CT scans. In contrast, it was mostly seen as a lucent zone on the conventional CT scans (n=44). Of 47 patients having a hyperattenuating line or band on the high resolution CT scans, the minor fissure was considered to be complete in 17 patients (36%), and incomplete in 30 patients (64%), who had defect at medial portion of the minor fissure. The most common type of the minor fissure seen on the high-resolution CT scans was type I variety (n=23), followed by type IIa (n=10) and type II (n=8). We could not determine the type in six patients. The type determined by the high resolution CT scans was highly well correlated with that determined by the plain radiographs (p<0.05). In conclusion, the minor fissure was seen on CT studies as variable appearances and high-resolution CT scans were superior to the conventional CT scans in the evaluation of the minor fissure. The type of the minor fissure determined by the high-resolution CT scans were well correlated with those seen on the radiographs.
Classification
;
Hand
;
Humans
;
Lung Diseases
;
Radiography, Thoracic
;
Tomography, X-Ray Computed
10.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