1.Epidemic Pneumonia Caused by Mycoplasma Pneumoniae.
Tuberculosis and Respiratory Diseases 1994;41(3):289-298
BACKGROUND: Most studies of Mycoplasma pneumonia involve a group of admitted patients in hospital, usually with major medical illness. So we investigated the epidemiologic and radiologic features during the course of outbreak of pneumonia in Chunnam coastal area. METHODS: We retrospectively studied the epidemiologic and clinical feature of 105 patients with serologically proven Mycoplasma pneumonia treated at Kwang-Yang Hospital during a epidemic period of Jun. 1993 to Dec. 1993. All cases of pneumonia developed in this period were also reviewed and compared with serologically proven group. RESULTS: 1) There were 63 males and 42 females. 2) More than half(57%) of cases belonged to 5-9 years of age group, and mean age was 6.5 years old. Mean age was steadily decreased as prevalence of Mycoplasma pneumonia had been subsided. 3) A major determinant of the outbreak seemed to .to the population density rather than the population size. 4) The common radiologic features were interstitial in type, and 67 cases was restricted to one lobe. Lobar types are more common in late childhood, and interstitial or diffuse types in early childhood. CONCLUSION: These epidemiologic and radiographic characteristics would contribute to the diagnosis of Mycoplasma pneumonia.
Diagnosis
;
Female
;
Humans
;
Male
;
Mycoplasma pneumoniae*
;
Mycoplasma*
;
Pneumonia*
;
Pneumonia, Mycoplasma*
;
Population Density
;
Prevalence
;
Retrospective Studies
2.A descriptive study on the tuberculosis mortality in a tuberculosis- centered hospital.
Soo Young KIM ; Joo Nam BYUN ; Jin Chol CHOI
Tuberculosis and Respiratory Diseases 1993;40(5):595-601
No abstract available.
Mortality*
;
Tuberculosis*
3.Chronic obstructive pulmonary disease: association with gastroesophageal reflux disease.
Young Chul KIM ; Jae Hee OH ; Joo Nam BYUN
Journal of the Korean Radiological Society 1992;28(5):715-723
Multiple factors including gastroesophageal reflux disease (GERD) were evaluated for a case-control study in Chonnam area to investigate the causative entity of COPD. Data on the multiple causative factors from hospital records and interview survey were analyzed in three groups of COPD(64 cases as case group), normal lung (83 cases as control group 1) and non-COPD lung disease (45 cases as control group 2). Smoking status, history of adulthood pulmonary infection and frequent history of URI, socioeconomic status, and GERD were significantly different between COPD group and control group 1. Drinking status, physical height of the subjects and GERD were significantly different between COPD group and control group 2. If control group 1 was used, odds ratio of GERD and COPD was 5.68(95%confidence interval, 95% CI:2.59-12.45) and 4.81 (95% CI:1.89-10.53) when adjusted by age and smoking status. If control group 2 was used. Odds ratio of GERD and COPD was 4.22 (95% CI:1.69-10.56) and 4.59 (95% CI:1.64-12.86) when adjusted by alcohol and adulthood respiratory infection status. In summary, there results suggested that GERD might play a causative role in the development of COPD.
Case-Control Studies
;
Drinking
;
Gastroesophageal Reflux*
;
Hospital Records
;
Jeollanam-do
;
Lung
;
Lung Diseases
;
Odds Ratio
;
Pulmonary Disease, Chronic Obstructive*
;
Smoke
;
Smoking
;
Social Class
4.The Value of Renal Artery Resistive Indices: Association with Esophageal Variceal Bleeding in Patients with Alcoholic Cirrhosis.
Journal of the Korean Radiological Society 2007;56(4):355-360
PURPOSE: To determine whether resistive indices of the renal artery (RIR) or the splenic artery (RIS) can be used as predictors of bleeding in patients with alcoholic liver cirrhosis. MATERIALS AND METHODS: According to esophageal variceal bleeding episodes, 33 patients with cirrhosis were divided into two groups, a bleeder group (n=17) and a non-bleeder group (n=16). These two groups were compared with respect to five variables (age, spleen size, Child's score, RIS, and RIR). Sensitivity, specificity, and accuracy for the detection of bleeders were calculated using a cutoff value of 0.7 for RIR. RESULTS: The mean values of variables were higher for bleeders than for non-bleeders. With the exception of age, four variables were significantly correlated with bleeding (r=0.43 for spleen size; r=0.36 for Child's score; r=0.37 for RIS; p<0.05, respectively; r=0.63 for RIR, p<0.01). Only RIR was found to be significantly a predictive variable for bleeders (adjusted Odds ratio=19.9; 95% confidence interval: 1.3-306, p<0.05) when the RIR was more than 0.7. RIR had a sensitivity of 88.3% and a specificity of 75% with an accuracy of 81.8% at a cutoff value of 0.7 for identifying bleeders. CONCLUSION: A high RIR value will be useful in predicating esophageal variceal bleeding in patients with alcoholic liver cirrhosis.
Alcoholics*
;
Esophageal and Gastric Varices*
;
Fibrosis
;
Hemorrhage
;
Humans
;
Liver Cirrhosis
;
Liver Cirrhosis, Alcoholic*
;
Renal Artery*
;
Sensitivity and Specificity
;
Spleen
;
Splenic Artery
5.Statistical Observation on Neonate.
Hong Ja KANG ; Nam Hyuk JOO ; Soon Ok BYUN ; Ji Sub OH
Journal of the Korean Pediatric Society 1990;33(8):1037-1047
No abstract available.
Humans
;
Infant, Newborn*
6.Usefulness of Ultrasound in the Evaluation of Morphologic Change of a Cirrhotic Liver During Respiration.
Joo Nam BYUN ; Dong Hun KIM ; Eun Ha SUK
Journal of the Korean Society of Medical Ultrasound 2010;29(4):233-239
PURPOSE: This study was designed to determine whether transabdominal ultrasound can detect different hepatic stiffness between patients with cirrhosis and control subjects. MATERIALS AND METHODS: Sevent-three patients (Child-Pugh class A stage) with liver cirrhosis and 57 control subjects were included in this study. All patients were subdivided arbitrarily into two groups: early cirrhosis (n = 53) and overt cirrhosis (n = 20). Two sagittal images of the left lobe of the liver were obtained in the left hepatic vein level during the resting state and at full inspiration while pushing their belly out, by abdominal US (i.e., resting and stress image). The length between the inferior hepatic angle and the midpoint of the liver dome was measured in all images for the evaluation of liver distortion. The elongation was calculated by a formula: (L2-L1/L1) x 100(%); where L1 and L2 are the length of the liver for both the resting and stress image. The calculated elongated length (L2-L1, EL) and elongation rate were compared between cirrhotic patients and control subjects. RESULTS: For the control subjects, early cirrhosis, and overt cirrhosis groups, the mean ELs (elongation rate) were 2.34+/-0.98 cm (30.2+/-13.2%), 1.18+/-0.73 cm (14.9+/-9.5%) and 0.53+/-0.54 cm (6.3+/-6.6%), respectively. This difference among the three groups was statistically significant (p < 0.05). A possible best cut-off value of liver elongation rate is 17% for the prediction of cirrhosis (sensitivity: 90%, specificity: 75.3%). CONCLUSION: The liver of patients with liver cirrhosis is stiffer than that of control subjects. Calculation of the elongation rate in the left lobe of the liver during a respiratory maneuver may be used as an ancillary method of US for the evaluation of liver cirrhosis.
Fibrosis
;
Hepatic Veins
;
Humans
;
Liver
;
Liver Cirrhosis
;
Respiration
7.Can the Splenic Artery Resistive Index Be an Ancillary Sign on Ultrasound for the Differentiation of Alcoholic Cirrhosis from Hepatitis B-virus Related Cirrhosis?.
Journal of the Korean Society of Medical Ultrasound 2007;26(2):69-75
PURPOSE: We wanted to assess the usefulness of the splenic artery resistive index (RIS) for differentiating between alcoholic cirrhosis (AC) and hepatitis B-virus related cirrhosis (VC). MATERIALS AND METHODS: A total of 109 subjects (28 normal healthy controls, 38 patients with VC and 43 patients with AC) were included in this study. The spleen sizes, Child-Pugh scores and RISs were compared between the two cirrhotic groups. The receiver operating characteristic (ROC) curve was used to determine an RIS cutoff value for the differentiation of the two cirrhotic groups. RESULTS: The mean spleen size and mean RIS in the controls were less than those of the two cirrhotic groups (p < 0.05), and the mean spleen sizes and Child-Pugh scores were not different between the two groups (AC vs. VC), (13.1 +/- 3.2 cm vs. 12.9 +/- 2.6 cm, p > 0.05; 6.6 +/- 1.9 vs. 5.9 +/- 1.6, p > 0.05, respectively). In contrast, the mean RIS of the AC patients was significantly higher than that of the VC patients (0.72 +/- 0.07 vs. 0.62 +/- 0.06, respectively, p < 0.01). The sensitivity, specificity and accuracy at an RIS cut-off value of 0.7 for differentiating the two cirrhotic groups were 76.7%, 68.4% and 72.8, respectively. CONCLUSION: The RIS is useful factor for differentiating the patients with AC from the patients with VC.
Alcoholics*
;
Fibrosis*
;
Hepatitis*
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Humans
;
Liver Cirrhosis
;
Liver Cirrhosis, Alcoholic*
;
ROC Curve
;
Sensitivity and Specificity
;
Spleen
;
Splenic Artery*
;
Ultrasonography*
8.Catastrophic Primary Antiphospholipid Syndrome.
Dong Hun KIM ; Joo Nam BYUN ; Sang Wan RYU
Journal of the Korean Radiological Society 2006;55(3):263-266
Catastrophic antiphospholipid syndrome (CAPLS) was diagnosed in a 64-year-old male who was admitted to our hospital with dyspnea. The clinical and radiological examinations showed pulmonary thromboembolism, and so thromboembolectomy was performed. Abdominal distention rapidly developed several days later, and the abdominal computed tomography (CT) abdominal scan revealed thrombus within the superior mesenteric artery with small bowel and gall bladder distension. Cholecystectomy and jejunoileostomy were performed, and gall bladder necrosis and small bowel infarction were confirmed. The anticardiolipin antibody was positive. Anticoagulant agents and steroids were administered, but the patient expired 4 weeks after surgery due to acute respiratory distress syndrome (ARDS). We report here on a case of catastrophic APLS with manifestations of pulmonary thromboembolism, rapidly progressing GB necrosis and bowel infarction.
Antibodies, Anticardiolipin
;
Anticoagulants
;
Antiphospholipid Syndrome*
;
Cholecystectomy
;
Dyspnea
;
Humans
;
Infarction
;
Male
;
Mesenteric Artery, Superior
;
Middle Aged
;
Necrosis
;
Pulmonary Embolism
;
Respiratory Distress Syndrome, Adult
;
Steroids
;
Thrombosis
;
Urinary Bladder
9.Catastrophic Primary Antiphospholipid Syndrome.
Dong Hun KIM ; Joo Nam BYUN ; Sang Wan RYU
Journal of the Korean Radiological Society 2006;55(3):263-266
Catastrophic antiphospholipid syndrome (CAPLS) was diagnosed in a 64-year-old male who was admitted to our hospital with dyspnea. The clinical and radiological examinations showed pulmonary thromboembolism, and so thromboembolectomy was performed. Abdominal distention rapidly developed several days later, and the abdominal computed tomography (CT) abdominal scan revealed thrombus within the superior mesenteric artery with small bowel and gall bladder distension. Cholecystectomy and jejunoileostomy were performed, and gall bladder necrosis and small bowel infarction were confirmed. The anticardiolipin antibody was positive. Anticoagulant agents and steroids were administered, but the patient expired 4 weeks after surgery due to acute respiratory distress syndrome (ARDS). We report here on a case of catastrophic APLS with manifestations of pulmonary thromboembolism, rapidly progressing GB necrosis and bowel infarction.
Antibodies, Anticardiolipin
;
Anticoagulants
;
Antiphospholipid Syndrome*
;
Cholecystectomy
;
Dyspnea
;
Humans
;
Infarction
;
Male
;
Mesenteric Artery, Superior
;
Middle Aged
;
Necrosis
;
Pulmonary Embolism
;
Respiratory Distress Syndrome, Adult
;
Steroids
;
Thrombosis
;
Urinary Bladder
10.Usefulness of Three Dimensional Reconstructive Images for Thoracic Trauma Induced Fractures.
Kyung Hun KOH ; Dong Hun KIM ; Young Sook KIM ; Joo Nam BYUN
Journal of the Korean Radiological Society 2006;55(3):247-253
PURPOSE: We wanted to evaluate the usefulness of three-dimensional reconstructive images using multidetector computed tomography (MDCT) for thoracic traumatic patients visiting emergency room. MATERIALS AND METHODS: 76 patients with fractures of the 105 patients who visited our emergency room with complaints of thoracic trauma were analyzed retrospectively. All the patients had thoracic MDCT performed and the three-dimensional reconstructive images were taken. The fractures were confirmed by axial CT, the clinical information, whole body bone scanning and the multiplanar reformation images. Plain x-ray images were analyzed by the fractured sites in a blind comparison of two radiologists' readings, and then that finding was compared with the axial CT scans and the three-dimensional reconstructive images. RESULTS: The fracture sites were rib (n=68), sternum (n=14), clavicle (n=6), scapula (n=3), spine (n=5) and combined fractures (n=14). Plain x-ray and axial CT scans had a correspondency of 0.555 for the rib fractures. Axial CT scans and the three-dimensional reconstructive images had a correspondency of .952. For sternal fractures, those values were 0.692 and 0.928, respectively. The axial CT scans and three-dimensional reconstructive images showed sensitivities of 94% and 91% for rib and other fractures, respectively, and 93% and 100% for sternal fracture, respectively. Three-dimensional reconstructive image had an especially high sensitivity for the diagnosis of sternal fracture. CONCLUSION: While evaluating thoracic trauma at the emergency room, the three-dimensional reconstructive image was useful to easily diagnose the extent of fracture and it was very sensitive for detecting sternal fracture.
Clavicle
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Diagnosis
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Emergency Service, Hospital
;
Humans
;
Multidetector Computed Tomography
;
Reading
;
Retrospective Studies
;
Rib Fractures
;
Ribs
;
Scapula
;
Spine
;
Sternum
;
Tomography, X-Ray Computed