1.Trichobezoar dectected by ultrasonography: case report.
Choon Sik YOON ; Myung Jun KIM ; Ki Keun OH
Journal of the Korean Radiological Society 1993;29(4):849-852
The authors experienced a case of gastroduodenojejunal trichobezoar detected by ultrasongraphic examination. We thought that tricholbezoar had relatively specific ultrasonographic findings such as a broad hyperechogenic superficial bandlike rim with a complete posteior sonic shadowing and multiple linear echogenic strands on its surface representing hairs, which were better seen after water ingestion. So we were able to get the correct diagnosis of trichobezoar prior to conventional barium studies in a patient who could not be suspected suspected clinically.
Barium
;
Bezoars*
;
Diagnosis
;
Eating
;
Hair
;
Humans
;
Shadowing (Histology)
;
Ultrasonography*
;
Water
2.Aneurysms of the superficial temporal artery.
Myung Jai KANG ; Myung Soon KIM ; Sang Keun YOON ; Hun Joo KIM
Journal of the Korean Radiological Society 1993;29(1):9-13
Aneurysm of the superficial temporal artery is rare. We reviewed seven cases of aneurysm of the superficial temporal artery, which were confirmed surgically and angiographically. The results were as follows: The most common site of aneurysm was left superficial temporal artery, major feeding artery was anterior branch of superficial temporal artery, mean diameter was 7.8mm×12.6mm, and all aneurysms showed lobulated margin with intraluminal filling defects.
Aneurysm*
;
Arteries
;
Temporal Arteries*
3.Contribution of Thymidylate Synthase Enhancer Region (TSER) Polymorphism to Total Plasma Homocysteine Levels in Korean Patients with Recurrent Spontaneous Abortion.
Yoon Kyung CHOI ; Myung Seo KANG ; Nam Keun KIM ; Sun Hee KIM ; Dong Hee CHOI ; Myung Ok AN ; Suman LEE
Korean Journal of Fertility and Sterility 2004;31(3):183-190
OBJECTIVES: Methylenetetrahydrofolate reductase (MTHFR) mutation are commonly associated with hyperhomocysteinemia, and through their defects in homocysteine metabolism, they have been implicated as a risk factor for recurrent spontaneous abortion. Recent report describe that 28-bp tandem repeat polymorphism in thymidylate synthase enhancer region (TSER) that influence enzyme activity would affect plasma homocysteine level. We have investigated the relationship between TSER genotype and plasma homocysteine level in 54 patients with recurrent spontaneous abortion. METHODS: Plasma homocysteine level was measured by fluorescent polarizing immunoassay. MTHFR mutation (C677T and A1298C) was identified by PCR-restriction fragment length polymorphism assay and TSER mutation was analyzed by PCR method. The data were analyzed using the program SAS 8.2 for Windows. RESULTS: Total homocysteine level was significantly higher in MTHFR 677TT genotype (9.80+/-3.87 mumol/L) than MTHFR 677CC genotype (8.14+/-1.74 mumol/L) in Korean patients with unexplained recurrent spontaneous abortion (p=0.0143). However, the plasma homocysteine level was not significantly different in the MTHFR 1298AA (8.42+/-2.65 mumol/L) and 1298CC (6.09+/-0.32 mumol/L; p=0.2058) and, TSER 2R2R (8.61+/-1.68 mumol/L) and 3R3R (8.05+/-2.81 mumol/L; p=0.9319) mutant genotypes, respectively. In this study, we found the combination effects of TSER and MTHFR C677T genotypes. Plasma homocysteine levels were the highest (11.47+/-4.66 mumol/L) in individuals with TSER 3R3R (8.05+/-2.81 mumol/L) and MTHFR 677TT (9.80+/-3.87 mumol/L) genotypes. Individuals with a combination of both TSER 2R2R/2R3R and MTHFR 677CC/CT genotypes (7.69+/-1.77 mumol/L) had lower plasma homocysteine levels than TSER 2R2R (8.61+/-1.68 mumol/L) and MTHR 677CC (8.14+/-1.74 mumol/L) genotypes, respectively. The effect of MTHFR polymorphism in the homocysteine metabolism appears to be stronger than that of TSER polymorphism. CONCLUSION: Although statistically not significant, we found the elevated level of plasma homocysteine in combined genotypes with TSER and MTHFR (C677T and A1298C) in Korean patients with unexplained habitual abortion. In this study, we reported the possibility that TSER polymorphism is a genetic determinant of plasma homocysteine levels in the Korean patients as well as MTHFR C677T polymorphism. A large prospective study is needed to verify our findings.
Abortion, Habitual
;
Abortion, Spontaneous*
;
Female
;
Genotype
;
Homocysteine*
;
Humans
;
Hyperhomocysteinemia
;
Immunoassay
;
Metabolism
;
Methylenetetrahydrofolate Reductase (NADPH2)
;
Plasma*
;
Polymerase Chain Reaction
;
Pregnancy
;
Risk Factors
;
Tandem Repeat Sequences
;
Thymidylate Synthase*
4.Radiologic findings of mesoblastic nephroma.
Sei Jung OH ; Choon Sik YOON ; Ki Keun OH ; Myung Joon KIM
Journal of the Korean Radiological Society 1992;28(3):453-456
The mesoblastic nephroma is a rare benign renal tumor that frequently appears as a neonatal abdominal mass. This benign tumor is composed primarily of connective tissue that growth between intact nephrons and often replaces most of the renal parenchyme. Contrast media within the calyceal systems are seen within the tumor representing function by nephrons trapped within the mass. Prognosis after complete excision is excellent.
Connective Tissue
;
Contrast Media
;
Nephroma, Mesoblastic*
;
Nephrons
;
Prognosis
5.Estimation of Joint Risks for Developing Uterine Cervix Cancer in Korea.
Hachung YOON ; Aesun SHIN ; Sue Kyung PARK ; Myung Jin JANG ; Keun Young YOO
Korean Journal of Preventive Medicine 2002;35(3):263-268
OBJECTIVE: This study was aiming at estimating the joint effects of various risk factors associated with uterine cervix cancer in Korea. METHODS: Data obtained from a case-control study were analyzed with a multiplicative model. RESULTS: After adjustment for age and husband's educational attainments, the family history of cervical cancer (OR=2.1, 95% CI=1.2-3.9), unstable marital status due to separation, by death or divorce, etc. (OR=2.8, 95% CI=1.7-4.6), and a large number of deliveries (> or = 3 vs. nulliparous OR=6.5, 95% CI=1.4-29.9) increased the risk of uterine cervix cancer. Conversely, first sexual intercourse at an older age (> or = 25 years vs. <19 years OR=0.4, 95% CI=0.2-0.6) and husband's circumcision (OR=0.7, 95% CI=0.5-1.0) decreased the risk. In the multiplicative model, the highest joint risk (OR=39.2, 95% CI 5.9-258.9) was observed in women with a family history of uterine cervical cancer, an unstable marital status, where the ex-husband was not circumcised, with 3 or more delivery experiences, and having her first sexual intercourse when younger than 19 years of age. However, women without a family history of uterine cervix cancer, married to a circumcised husband, having had her first sexual intercourse at 25 years or older, and nulliparous, showed the lowest joint effect (OR=0.3, 95% CI=0.1-0.5). CONCLUSION: As carcinogenesis is a complex action involving various factors, we consider a joint effects approach to be appropriate in an epidemiological study on risk factors for uterine cervix neoplasms.cervix neoplasm.
Carcinogenesis
;
Case-Control Studies
;
Cervix Uteri*
;
Circumcision, Male
;
Coitus
;
Divorce
;
Epidemiologic Studies
;
Female
;
Humans
;
Joints*
;
Korea*
;
Male
;
Marital Status
;
Models, Statistical
;
Risk Factors
;
Spouses
;
Uterine Cervical Neoplasms
6.Prevalence of hepatitis C virus in liver diseases and high risk groups in Kangwon area.
Myung Seo KANG ; Won Keun SONG ; Kap Jun YOON ; Kyung Won LEE
Korean Journal of Blood Transfusion 1991;2(2):199-204
No abstract available.
Gangwon-do*
;
Hepacivirus*
;
Hepatitis C*
;
Hepatitis*
;
Liver Diseases*
;
Liver*
;
Prevalence*
7.Neuroblastoma: Computed Tomographic Findings.
Choon Sik YOON ; Chang Su AHN ; Myung Jun KIM ; Ki Keun OH
Journal of the Korean Radiological Society 1994;30(1):187-192
PURPOSE: To evaluate the characteristic CT findings of neuroblastoma, we studied neurobalstomas. METHODS AND MATERIALS: We analysed CT findings of available 25 cases among pathologically proved 51 neurobalstomas from Jan. 1983 to Sept. 1990. RESULTS: The most frequent site of origin is adrenl gland (40%) and the second is retroperitoneum (32%) and the third ismediastinum (16%). Characteristic CT findings are as follows:Calcifications within the tumor is detected in 86% of abdominal neuroblastomas and 50% of mediastinal origin. Hemorrhagic and necrotic changes within the tumor is noted at 86% in the tumor of abdominal origin and 25% in mediastinal neuroblastomas. Contrast enhanced study showed frequently septated enhanced appearance with/without solid contrast enhancement. Encasements of major great vessels such as aorta and IVC with/without displacement by metastatic lymphnodes or tumor are frequently seen in 90% of abdominal neuroblastomas. Multiple lymphadenopathy are detected in 95% of abdominal neurobalstomas and 25% of mediastinal neuroblastomas. The most common organ of contiguous direct invasion is kidney in 6 cases and the next one is liver but intraspinal canal invasion is also noted in 2 cases. CONCLUSION: We concluded that diagnosis of neuroblastoma would be easily obtained in masses of pediatric group from recognition of above characteristic findings.
Aorta
;
Diagnosis
;
Kidney
;
Liver
;
Lymphatic Diseases
;
Neuroblastoma*
8.Wilms' tumor:Changes of CT findings after chemotherapy.
Choon Sik YOON ; Myung Jun KIM ; Mi Hae KIM ; Ki Keun OH
Journal of the Korean Radiological Society 1993;29(6):1331-1336
When the tumor is advanced with distant metastasis or unresectable initially, preoperative chemotherapy could be applied in the treatment of Wilms' tumor We experienced 6 cases of favorable type of Wilms' tumor, 1 case of clear cell sarcoma and 1 case of renal cell carcinoma. They were treated with preoperative chemotherapy and underwent CT Scans before and after the therapy. Pathologic changes after chemotherapy in Wilms' tumor were known from previous reports as subtotal hemorrhagic necrosis, cystic change, clusters of foamy histiocytes, granulation tissue formation, primitive nephrogenic tissues and peripherally remained focal areas of blastemal infiltration. Changes of CT findings after chemotherapy were internal necrosis(6/6), decrease in size(5/6), decrease and absence of regional lymph node enlargement(4/6) and improved or disappeared metastatic lesions(3/3). Although our study had some limitations such as small numbers of cases and all cases were favorable types, we thought that there were good correlations between change of CT findings and subtotal hemorrhagic necrosis after preoperative chemotherapy in Wilms' tumor.
Carcinoma, Renal Cell
;
Drug Therapy*
;
Granulation Tissue
;
Histiocytes
;
Lymph Nodes
;
Necrosis
;
Neoplasm Metastasis
;
Sarcoma, Clear Cell
;
Tomography, X-Ray Computed
;
Wilms Tumor
9.The Study of Antithrombin III Deficiency in Patients with Recurrent Spontaneous Abortion.
Yoon Sung NAM ; Kwang Yul CHA ; Nam Keun KIM ; Myung Seo KANG ; Doyeon OH
Korean Journal of Fertility and Sterility 2001;28(4):301-306
OBJETIVE: To analyze the antithrombin III deficiency in patients with recurrent spontaneous abortion. MATERIALS AND METHOD: The blood samples were tested by chromogenic assay to evaluate the activity of antithrombin III. RESULTS: There was only one case of antithrombin III deficiency. This patient experienced one neonatal death after delivery and one FDIU (fetal death in utero). And also this patient showed a lupus anticoagulant and the prolongation of PTT. CONCLUSIONS: Women with recurrent miscarriage who have no obvious identified cause should consider hematologic screening. Antithrombin III deficiency could be a cause of recurrent spontaneous abortion. But the incidence is very rare in Korean patients.
Abortion, Habitual
;
Abortion, Spontaneous*
;
Antithrombin III Deficiency*
;
Antithrombin III*
;
Female
;
Humans
;
Incidence
;
Lupus Coagulation Inhibitor
;
Mass Screening
;
Pregnancy
10.Multiple hamartomas(mesenchymomas) of the unilateral chest wall in infancy: CT findings.
Myung Joon KIM ; Choon Sik YOON ; Ki Keun OH ; Jong Tae LEE ; Woo Hee JUNG
Journal of the Korean Radiological Society 1992;28(5):794-797
A case of multiple hamartomas of the unilateral chest wall in a four month old infant is presented. There have been a few reports on the CT findings of the chest wall hamartoma in infancy. We describe bone changes of the ribs and mineralization of this rare tumor on the CT scan, and the locations of two separate masses.
Hamartoma
;
Humans
;
Infant
;
Miners
;
Ribs
;
Thoracic Wall*
;
Thorax*
;
Tomography, X-Ray Computed