1.Radiologic Evaluation of Intraabdomenal Masses in Childhood.
Hyuk Po KWON ; Woo Mok BYUN ; Mi Soo HWANG ; Son Yong KIM ; Jae Chun CHANG ; Bok Hwan PARK
Yeungnam University Journal of Medicine 1988;5(1):33-42
The abdominal tumors in children are different from those of adult. These tumors are the third most common one, preceded by leukemia and brain tumors, in children under 15 years. X-ray examination is the most important method among diagnostic approaches. The role of diagnostic imaging is to identify the precise anatomic location and extent of pathologic process with the minimal number of imaging procedures. 23 cases of abdominal tumors were reviewed in respect of age incidence, site of origin, radiologic findings. The results are briefly summarized as follows: 1. Neuroblastoma was the most common (6 cases) and wilm's tumor (5 cases), choledocal cyst (4 cases), ovarian mass (3 cases), hydronephrosis (2 cases), were descending order in frequency. 2. The most common site was retroperitoneum (60%) Kidney was the single most common site of origin. 3. Radiologic findings. The most common findings of plain radiography was ill defined soft tissue mass and this method was helpful in the presence of calcification especially in neuroblastoma. Ultrasonographic pattern was anechoic (cystic), echoic or mixed pattern, but this method provide less precise anatomical details, nevertheless Ultrasonography was particularly useful imaging modality for the pediatric abdominal tumors. IVP findings were renal displacement, caliceopelvic system distortion or nonvisualization of kidney, these information was helpful in determining the location of tumors. CT scan showed homogenous or inhomogeneous, cystic or solid, mass with their anatomic location. 4. Ultrasonography was the most widely used specific diagnostic method, but had limited value in detecting the anatomic location of tumors. CT scan was superior to ultrasound for determining the extent of tumors.
Adult
;
Brain Neoplasms
;
Child
;
Diagnostic Imaging
;
Humans
;
Hydronephrosis
;
Incidence
;
Kidney
;
Leukemia
;
Methods
;
Neuroblastoma
;
Radiography
;
Tomography, X-Ray Computed
;
Ultrasonography
;
Wilms Tumor
2.Hepaprotective Effect of Standardized Ecklonia stolonifera Formulation on CCl₄-Induced Liver Injury in Sprague-Dawley Rats.
Jae Hyuk BYUN ; Jun KIM ; Se Young CHOUNG
Biomolecules & Therapeutics 2018;26(2):218-223
The liver is an essential organ for the detoxification of exogenous xenobiotics, drugs and toxic substances. The incidence rate of non-alcoholic liver injury increases due to dietary habit change and drug use increase. Our previous study demonstrated that Ecklonia stolonifera (ES) formulation has hepatoprotective effect against alcohol-induced liver injury in rat and tacrine-induced hepatotoxicity in HepG2 cells. This present study was designated to elucidate hepatoprotective effects of ES formulation against carbon tetrachloride (CCl₄)-induced liver injury in Sprague Dawley rat. Sixty rats were randomly divided into six groups. The rats were treated orally with ES formulation and silymarin (served as positive control, only 100 mg/kg/day) at a dose of 50, 100, or 200 mg/kg/day for 21 days. Seven days after treatment, liver injury was induced by intraperitoneal injection of CCl₄ (1.5 ml/kg, twice a week for 14 days). The administration of CCl₄ exhibited significant elevation of hepatic enzymes (like AST and ALT), and decrease of antioxidant related enzymes (superoxide dismutase, glutathione peroxidase and catalase) and glutathione. Then, it leaded to DNA damages (8-oxo-2′-deoxyguanosine) and lipid peroxidation (malondialdehyde). Administration of ES formulation inhibited imbalance of above factors compared to CCl₄ induced rat in a dose dependent manner. Real time PCR analysis indicates that CYP2E1 was upregulated in CCl₄ induced rat. However, increased gene expression was compromised by ES formulation treatment. These findings suggests that ES formulation could protect hepatotoxicity caused by CCl₄ via two pathways: elevation of antioxidant enzymes and normalization of CYP2E1 enzyme.
Animals
;
Carbon Tetrachloride
;
Cytochrome P-450 CYP2E1
;
DNA Damage
;
Food Habits
;
Gene Expression
;
Glutathione
;
Glutathione Peroxidase
;
Hep G2 Cells
;
Incidence
;
Injections, Intraperitoneal
;
Lipid Peroxidation
;
Liver*
;
Rats
;
Rats, Sprague-Dawley*
;
Real-Time Polymerase Chain Reaction
;
Silymarin
;
Xenobiotics
3.Erratum to “Protective Effects of Ecklonia stolonifera Extract on Ethanol-Induced Fatty Liver in Rats” Biomol.Ther. 24 (2016) 650–658.
Chae Young BANG ; Jae Hyuk BYUN ; Hye Kyung CHOI ; Jae Sue CHOI ; Se Young CHOUNG
Biomolecules & Therapeutics 2017;25(2):222-222
No abstract available.
4.Bursting Fracture of the Proximal Femur during Insertion of Unreamed Femoral Nail for Femur Shaft Fracture: A Case Report.
Ji Wan KIM ; Seong Eun BYUN ; Won Hyuk OH ; Jung Jae KIM
Journal of the Korean Fracture Society 2010;23(2):227-231
When treating femur shaft fracture in adults, undreamed nail can be an option in order to avoid systemic complications. To appropriately insert unreamed intramedullary nail, an accurate entry point and sufficient reaming of the entry portal is essential. The intramedullary canal of the proximal femur must be reamed over than the diameter of the proximal end of the nail. If the proximal reaming is not sufficient, complications such as bursting fracture of proximal femur can occur. We present two cases of bursting fracture of proximal femur following insertion of undreamed intramedullary nail as well as a literature review.
Adult
;
Femur
;
Humans
;
Nails
5.Three Cases of Primary Ovarian Pregnancy.
Hyuk Woo LEE ; Sang Kug BYUN ; Jae Chul PARK ; Yong Ho JO ; Eui Sik JUNG
Korean Journal of Obstetrics and Gynecology 2002;45(11):2081-2086
Primary ovarian pregnacy is a rare form of ectopic pregnacy of which an estimated overall incidence is highly variable, but improved diagnosis of acute hemoperitoneum of ovarian may reveal a higher incidence than reported earlier. Ovarian pregnancy is uaually accompanied with the rupture of the ovary and massive hemoperitoneum. It usually presents with abdominal pain, menstural irregularities, vaginal bleeding, a palpable adnexal mass and other symptoms which are very similar to those of tubal ectopic pregnacy and hemorrhgic corpus luteum cysts. Risk factors to ovarian pregnancy include a history of pelvic inflammatory disease (PID), prior pelvic surgery, and use of an intrauterine contraceptive devices (IUD). We have experienced three cases of ovarian pregnancy, which are presented with a brief review of the literature.
Abdominal Pain
;
Diagnosis
;
Female
;
Hemoperitoneum
;
Incidence
;
Intrauterine Devices
;
Ovarian Cysts
;
Ovary
;
Pelvic Inflammatory Disease
;
Pregnancy
;
Pregnancy, Ectopic*
;
Risk Factors
;
Rupture
;
Uterine Hemorrhage
6.Three Cases of Primary Ovarian Pregnancy.
Hyuk Woo LEE ; Sang Kug BYUN ; Jae Chul PARK ; Yong Ho JO ; Eui Sik JUNG
Korean Journal of Obstetrics and Gynecology 2002;45(11):2081-2086
Primary ovarian pregnacy is a rare form of ectopic pregnacy of which an estimated overall incidence is highly variable, but improved diagnosis of acute hemoperitoneum of ovarian may reveal a higher incidence than reported earlier. Ovarian pregnancy is uaually accompanied with the rupture of the ovary and massive hemoperitoneum. It usually presents with abdominal pain, menstural irregularities, vaginal bleeding, a palpable adnexal mass and other symptoms which are very similar to those of tubal ectopic pregnacy and hemorrhgic corpus luteum cysts. Risk factors to ovarian pregnancy include a history of pelvic inflammatory disease (PID), prior pelvic surgery, and use of an intrauterine contraceptive devices (IUD). We have experienced three cases of ovarian pregnancy, which are presented with a brief review of the literature.
Abdominal Pain
;
Diagnosis
;
Female
;
Hemoperitoneum
;
Incidence
;
Intrauterine Devices
;
Ovarian Cysts
;
Ovary
;
Pelvic Inflammatory Disease
;
Pregnancy
;
Pregnancy, Ectopic*
;
Risk Factors
;
Rupture
;
Uterine Hemorrhage
7.Prune Belly syndrome: case report.
Sang Jib KIM ; Hee Suk BYUN ; Woo Sik CHUNG ; Ki Young ANN ; Jae Hyuk LEW ; Jun Ho CHANG
Korean Journal of Urology 1992;33(5):932-934
Prune belly syndrome is a rare anomaly complex associated with absence of abdominal muscle combined with urinary tract abnormalities. We have encountered stillbirth female with severely distended abdomen without external genitalia end anus who was Finally confirmed as prune belly syndrome by an autopsy. Herein we report a case with review of literature.
Abdomen
;
Abdominal Muscles
;
Anal Canal
;
Autopsy
;
Female
;
Genitalia
;
Humans
;
Prune Belly Syndrome*
;
Stillbirth
;
Urinary Tract
8.Transureteroureterostomy: a neglected procedure.
Sang Jib KIM ; Hee Suk BYUN ; Woo Sik CHUNG ; Ki Young ANN ; Jae Hyuk LEW ; Jun Ho CHANG
Korean Journal of Urology 1992;33(5):926-928
We experienced a case of transureteroureterostomy in a single kidney with multiple distal ureteral strictures. The patient had received nephrectomy due to staghorn calculi 14 years ago. We have utilized the abandoned ureter from the transureteroureterostomy with stenting. We have confirmed good drainage through the anastomosed ureter by radiological imaging. No other complications were observed except Pseudomonas urinary tract infection. Thereby we report this unique procedure of transureteroureterostomy using the 14-year-age abandoned ureter.
Calculi
;
Constriction, Pathologic
;
Drainage
;
Humans
;
Kidney
;
Nephrectomy
;
Pseudomonas
;
Stents
;
Ureter
;
Urinary Tract Infections
9.Superficial Siderosis with Peripheral Dizziness: Report of 2 Cases
Tae Hoon KIM ; Jin Hyuk HUH ; Moon Suh PARK ; Jae Yong BYUN
Journal of the Korean Balance Society 2018;17(2):60-66
Superficial siderosis (SS) of the central nervous system is a rare disease, which is caused by the accumulation of iron from the hemoglobin in the superficial layer of the brain, spinal cord, and central parts of cranial nerves. The etiology of SS is the accumulation of hemosiderin in the subarachnoid space due to chronic or repeated hemorrhage resulting in progressive and irreversible neurological dysfunction. The cause of the disease is aneurysm, trauma, tumor, and vascular malformation. In most cases, the cause of bleeding is unknown. Clinical features include sensorineural hearing loss, cerebellar ataxia, and myelopathy. Until now, magnetic resonance imaging (MRI) has only been diagnosed and there is no standardized treatment. We will investigate clinical features and MRI findings of SS disease in the central nervous system using 2 patient cases.
Aneurysm
;
Brain
;
Central Nervous System
;
Cerebellar Ataxia
;
Cranial Nerves
;
Dizziness
;
Hearing Loss, Sensorineural
;
Hemorrhage
;
Hemosiderin
;
Humans
;
Iron
;
Magnetic Resonance Imaging
;
Rare Diseases
;
Siderosis
;
Spinal Cord
;
Spinal Cord Diseases
;
Subarachnoid Space
;
Vascular Malformations
;
Vertigo
10.Characteristics of Hyaluronic Acid and Its Use in Ocular Surface Diseases Including Dry Eye
Jinu KIM ; Jae Woong KOH ; Hyuk Jin CHOI ; Yong-Soo BYUN ; Ji Won JUNG ; Sang-Mok LEE
Journal of the Korean Ophthalmological Society 2023;64(2):170-183
Hyaluronic acid (HA) is a polysaccharide found in the extracellular matrix of the epithelial, nervous, and connective tissues of vertebrates. It is widely used in the treatment of ocular surface diseases (OSDs), including dry eye, due to its high water-retaining capacity, viscoelasticity, and role as a signaling molecule in inflammation and wound healing. This paper reviews the physicochemical and biological properties of HA related to the treatment of OSDs and the results of published preclinical studies, clinical trials, and meta-analyses on the effects of HA eye drops on the tear film, the mechanism of action of HA eye drops, and its clinical effects and adverse events in OSDs, such as corneal/conjunctival epithelial defects, dry eye, and postoperative dry eye. This review should help inform clinical judgments by providing clinical evidence and precautions on the use of HA eye drops in OSDs, including dry eye.