1.Occult papillary carcinoma of the thyroid.
Seung Keun OH ; Hwan Young YOO
Journal of the Korean Cancer Association 1993;25(5):651-657
No abstract available.
Carcinoma, Papillary*
;
Thyroid Gland*
2.A new type of multiple endocrine adenopathy.
Seung Keun OH ; Hwan Young YOO
Journal of the Korean Surgical Society 1993;45(6):1034-1041
No abstract available.
Multiple Endocrine Neoplasia*
3.Carcinoma of the thyroid gland in patients with Graves' disease.
Hwan Young YOO ; Yu Kyoo YOON ; Seung Keun OH
Journal of the Korean Cancer Association 1993;25(2):221-224
No abstract available.
Graves Disease*
;
Humans
;
Thyroid Gland*
4.The Risk of Seizure Recurrence After a First Unprovoked Seizure in Childhood : A Prospective Study.
Sang Ho YOO ; Jun Young SONG ; Sung Hwan KIM
Journal of the Korean Child Neurology Society 1999;7(1):79-88
PURPOSE: Epilepsy is generally defined as a chronic condition characterized by recurrent unprovoked seizure. It is still controversial whether the long-term antiepileptic drugs(AED) treatment will be necessary in children with first unprovoked seizure. Cognitive and behavioral side effects of AEDs are especially important in developing children. Therefore the rationale of AED treatment in the children with first unprovoked seizure depends upon the seizure recurrence rate and presence of risk factors related with seizure recurrence. We are going to evaluate the risk of seizure recurrence and risk factors after a first unprovoked seizure in children. METHODS: One hundred fifty eight patients presented with a first unprovoked seizure from July, 1994 to June, 1999 were prospectively followed by regular epilepsy clinic visit or telephone interview for a mean of 27 months. We analyzed overall recurrence risk and risk factors of seizure recurrence(EEG finding, etiology of seizure, seizure type, history of prior febrile convulsions, neurodevelopmental status prior to first seizure, presence of a Todd's paresis, family history of seizures, a seizure occuring while asleep, and duration of seizure) by Cox's proportional hazards model and Kaplan-Meier survival analysis. RESULTS: In 158 patients with first unprovoked seizure, 61 (39%) patients experienced subsequent seizure. The cumulative risk of seizure recurrence was 28.5, 37.6, and 42.3% at 6, 12, and 18 months. The median time to recurrence was 3 months, with 72% of recurrence occurring within 6 months, 92% within 1 year, and 100% within 2 years. On univariate analysis, risk factors for seizure recurrence included an etiology of seizure and abnormal EEG. In idiopathic cases, the risk factor was an EEG abnormality. CONCLUSION: Many of the children with a first unprovoked seizure will not have recurrences. The recurrence risk of a first unprovoked seizure in children have statistically correlated with the etiology of seizure(cryptogenic and symptomatic) and abnormal EEG. Children with an idiopathic first seizure and a normal EEG have a particularly favorable prognosis.
Ambulatory Care
;
Child
;
Electroencephalography
;
Epilepsy
;
Humans
;
Interviews as Topic
;
Paresis
;
Prognosis
;
Proportional Hazards Models
;
Prospective Studies*
;
Recurrence*
;
Risk Factors
;
Seizures*
;
Seizures, Febrile
5.Prognostic Value and Histologic Correlation of Sonography in Childhood Nephrotic Syndrome.
Kee Hwan YOO ; Hae Won CHEON ; Young Sook HONG
Journal of the Korean Society of Pediatric Nephrology 1998;2(1):26-33
The uterine cervix is an uncommon site of primary non-Hodgkin's lymphoma (NHL). Although the cytologic findings of NHLs are well known, most cervicovaginal smear of uterine NHLs give lower diagnostic yield than common epithelial malignancy because abnormal cells do not appear in the sample in the absence of surface ulceration. Herein, we describe cytologic findings of a case of uterine cervical NHL which was initially diagnosed by cervicovaginal smear. The tumor cells were relatively uniform, isolated, large-sized with scanty cytoplasm and round or indented nuclei. The nuclei had stippled chromatin and small nucleoli. Histologically and immunohistochemically the tumor was proven to be large cell lymphoma of T-cell lineage.
Buttocks
;
Cervix Uteri
;
Chromatin
;
Cytoplasm
;
Epidermal Cyst
;
Female
;
Lymphoma
;
Lymphoma, Non-Hodgkin
;
Nephrotic Syndrome*
;
T-Lymphocytes
;
Ulcer
6.Somatosensory Evoked Potential of Median Nerve in Preterm Infants.
Young Hwan KIM ; Kee Hwan YOO ; Young Sook HONG
Journal of the Korean Pediatric Society 1997;40(6):801-808
PURPOSE: The purpose of this study was to standardize the somatosensory evoked potential (SEP) latency and amplitude of healthy preterm infants according to the postconceptional age. METHODS: The median nerve SEPs were recorded in 30 healthy preterm infants who were followed up until 6 months and were neurodevelopmentally normal. RESULTS: The mean peak latency and interpeak amplitude were following : P0=20.89+/-6.09 (msec), N1=26.32+/-5.18, P1=31.16+/-6.59, N2=36.52+/-7.22 : P0N1=1.07+/-0.72 (microvolt), N1P1= 1.56+/-0.93, P1N2=1.56+/-1.73. The N1 peak latency was inversely related to post- conceptional age. (P=0.036) : below 36 weeks=29.44+/-3.18 (msec), from 36 weeks to 37+6 weeks=27.72+/-5.47, from 38 weeks to 39+6 weeks=25.20+/-5.86, above 40 weeks=22.70+/-2.09. CONCLUSION: This study demonstrates normal ranges of SEP of median nerve in preterm infants as a basic data of neurodevelopmental prognostic assessment.
Evoked Potentials, Somatosensory*
;
Humans
;
Infant, Newborn
;
Infant, Premature*
;
Median Nerve*
;
Reference Values
7.Traumatic Bilateral Anterior and Posterior Dislocations of the Hips with a Ipsilateral Femur Head Fracture: A Case Report
Myung Chul YOO ; Jin Hwan AHN ; Ki Young KIM ; Young Seok JEON ; Jong In KIM
The Journal of the Korean Orthopaedic Association 1988;23(1):134-137
A rare case of traumatic bilateral anterior and posterior dislocstions of the hip wss occured by autamobile accident as a passenger injury. The right hip was dislocated anteroinferior to the righ scetabulum(neer the right obturator froamen), and the left hip was dislocated posterosuperior to the left acetsbulum with a ipsilateral femur head fracture caudsd to the fovea centralis(Fig. 1).
Dislocations
;
Femur Head
;
Femur
;
Hip
8.Conversion of the ankylosed hip to the total hip replacement.
Myung Chul YOO ; Young Yong KIM ; Moon Hwan LEE ; Young Ho CHO
The Journal of the Korean Orthopaedic Association 1991;26(4):1041-1049
No abstract available.
Arthroplasty, Replacement, Hip*
;
Hip*
9.Relationship between Pulmonary Function and Apnea-Hypopnea Index in Asthmatic Children: The Preliminary Study.
Seung Gul KANG ; Heon Jeong LEE ; Seung Hwan LEE ; Young YOO ; Ji Tae CHOUNG ; Leen KIM
Sleep Medicine and Psychophysiology 2009;16(2):74-78
OBJECTIVE: It has been reported that the sleep apnea syndrome in the asthmatic patients is prevalent, however, the systematic study in this field using polysomnography has rarely been performed. The aim of this study is to investigate the relationship between the apnea-hypopnea index (AHI) and the pulmonary function in asthmatic children. METHODS: This study enrolled 19 male and 12 female asthmatic children aged 6-13 years (average 8.2+/-1.7 years old). Complete overnight polysomnography and pulmonary function test were performed for the participants. RESULTS: Of the 31 asthmatic children, 21 (67.7%) met the diagnostic criteria of the pediatric sleep apnea and the average AHI was 1.7+/-1.5/h. The children with higher AHI showed poorer pulmonary function (FEV1/FVC ratio : p=0.002, FEV1%pred : p=0.047). CONCLUSION: These results suggest that the prevalence of the pediatric sleep apnea could be very high among the asthmatic children and the severity of the sleep apnea correlates with the pulmonary function. However, the case-control study to compare the AHI between the asthma and control groups is absolutely necessary because few normative data are available for the children.
Aged
;
Asthma
;
Case-Control Studies
;
Child
;
Female
;
Humans
;
Male
;
Polysomnography
;
Prevalence
;
Respiratory Function Tests
;
Sleep Apnea Syndromes
10.Identification of the Source of Hematuria by the Ratio of the Urinary Erythrocyte MCV to That in Blood.
Young Guk KIM ; Gi Chan LEE ; Keun Haeng CHO ; Kee Hwan YOO ; Soon Kyum KIM
Journal of the Korean Pediatric Society 1994;37(8):1097-1103
The frequent occurrence of hematuria in children necessitates diagnostic evaluation. Hematuria may occur with either renal or lower urinary tract disease. Clarification of the etiology of hematuria, whether microscopic or gross, is facilited by localizing the site of bleeding to the kidney (glomerular) or the lower urinary tract (non-glomerular). The mean cellular volume (MCV) of urinary red blood cells (RBCs) of pediatric patients with glomerular (group I; n=77) and non-glomerular (group II; n=34) hematuria was determined using Coulter Counter Model S plus IV. We found that re blood cells of glomerular origin had a smaller volume than non-glomerular cells(73.79 9.75 m3 vs 83.55 3.77 m3, p<0.001). If an urinary MCV equal to 80.56 m3 was taken as the cut-off value between glomerular and non-glomerular hematuria, a correct assessment of the site of bleeding was made in 89 (80%) of the 111 patients studied (sensitivity 76%, specificity 88%). The ratio of the urinary erythrocyte MCV to that in blood(Umcv/Bmcv) was compared with the diagnosis. If an Umcv/Bmcv ratio equal to 0.95 was taken as the cut-off value between glomerular and non-glomerular hematuria, a correct assessment of the site of bleeding was made in 93 (83%) of the 111 patients studied (sensitivity 79.6%, specificity 94%). Coulter counter analysis of urine provides a simple noninvasive and objective aid to the diagnosis of hematurai. This test, when used early in the management of pediatric patients with hematuria, may help to avoid invasive investigations.
Blood Cells
;
Child
;
Diagnosis
;
Erythrocytes*
;
Hematuria*
;
Hemorrhage
;
Humans
;
Kidney
;
Sensitivity and Specificity
;
Urinary Tract
;
Urologic Diseases