PURPOSE: To evaluate morphologic characteristics of the microcalcifications on mammography that were confirmed pathologically. MATERIALS AND METHODS: Forty five cases of microcalcifications on mammography (fifteen cases of benign lesion, thirty cases of maiignancy) were retrospectively reviewed. RESULTS: The number of microcalcifications within 1 cm2 were more than 5 in 22 cases (73%) of 30 malignancy and less than 5 in 11 cases (73%) of 15 benignity. The heterogeneity of microcalcifications were seen in 26 cases of malignancy (87%) and the homogeneity of microcaicifications were 11 cases of benignity (73%). The morphologic characteristics of the microcalcifications were linear-V shape in 9 cases (30%), punctate shape in 8 cases (27%), fine stippled shape in 7 cases (23%), and round dot shape in 6 cases (20%) of malignancy and, round dot shape in 11 cases (73%), punctate shape in 2 cases (13%), and linear-V shape in 2 cases (13%) of benignity. CONCLUSION: Numerous irregular microcalcifications that are heterogenous in size and morphology were strong indicators of malignancy.
Mammography ; Population Characteristics ; Retrospective Studies

Single dose glass ampules have been developed for ease of administration, accuracy of measurement of dosage, sterility and use in prepackaged kits. Glass particle contamination of the contents of single dose glass ampules can occur upon opening. In our study, we determined whether different ampule size, different aspiration techniques or different methods of ampule opening had any effect on glass particle contamination. Different ampule sizes (1, 2, 20 ml), different aspiration techniques (19G, 22G needle) and different methods of ampule opening (one point ampule, cutting with circular etching, cutting with one plane etching) were evaluated. There was no signifcant difference in the number of particles aspirated by any given aspiration technique, ampule size and method of ampule opening. But intravenous glass particle administration is associated with patholagic responses, so the use of a filter needle, and in-line filter devices and a low pressure infusion system is advised.
Glass* ; Infertility ; Needles

BACKGROUND: The purpose of this study is followings: First, to find out similarity in anesthesiology related terminology in Korea, China and Japan. Second, to clarify the use of Chinese character in making anesthetic terminology in Korea. Third, in attempt to explore the criteria in making terminology. METHODS: 335 terms were selected in anesthetic terminology book and allocated to English term. RESULTS: 44 terms(13%) were same in Chinese character among three countries, 144 terms(43%) were different in each other, 141 terms (42%) were same between two countries (Korea-China 9, Korea-Japan 130 and China-Japan 2). CONCLUSIONS: Only small terms were same in three countries and nearly half of terms were different. Most of same terms in two countries came from Korea-Japan. It seemed that three countries had their own terms in anesthesiology. Making terminology with Chinese character were not believed to be the best and only way. Moreover, it was suspicious using Chinese character as communicating tool among three countries. Creative efforts with our own native language for better terminology in this field were expected.
Anesthesiology* ; Asian Continental Ancestry Group ; China* ; Humans ; Japan* ; Korea* ; Publications

BACKGROUND: Tracheal extubation can be performed while patients are deeply anesthetized or when they are awake. Each technique has its own advantages and disadvantages. But necessity for deep extubating conditions, and what level of anesthesia is adequately deep, is still controversial. Clinical conditions of patients or the preference of the anesthesiologist has dictated the choice of extubation technique. METHOD: Anesthesia was induced and maintained as usual manners. The 49 healthy children between 3 and 12 year of age undergoing tonsillectomy and adenoidectomy were randomly assigned to group 1(extubation at 1 MAC of enflurane) and group 2(awake extubation). SpO2 and airway-related complications(cough, breath-holding, airway obstruction, and laryngospasm) were observed for 5 minutes after extubation with 100% O2 by mask, and SpO2 and heart rate were measured for 90 seconds during transportation to the recovery room with room air breathing. RESULTS: The total incidence of airway-related complications in group 2 were higher than in group 1. However, group 1 showed severer complications than in group 2 such as airway obstruction and laryngospasm. There was no differences between the two groups in SpO2 and heart rate changes with 100% O2 mask just after extubation and during transportation. Group 1 showed higher SpO2 than group 2 upon arrival in the recovery room. CONCLUSION: We concluded that in healthy children undergoing elective oral surgery, airway-related complications are likely to be influenced more by the skill, experience and preference of the anesthesiologist than by the method alone.
Adenoidectomy ; Airway Extubation ; Airway Obstruction ; Anesthesia ; Child* ; Heart Rate ; Humans ; Incidence ; Laryngismus ; Masks ; Recovery Room ; Respiration ; Surgery, Oral ; Tonsillectomy ; Transportation

We have done survival analysis of the EKG monitor(from March, 1976 to February, 1993) and anesthetic machine(from February, 1915 to February, 1993) retrospectively in operating room at Severance hospital. Thirty eight EKG monitors and twenty eight anesthetic machines were included. Also EKG monitors were divided into two groups(one group was made in foreign country and another was made in Korea) and its survival function were compared. All statistics were treated with Product-limited estimate of survival function(Kaplan and Meier, 1958) with BMDP 1L. Mean survival time(+/-S.E) of all EKG monitor was 113.61(+/-5.70) months and the EKG made in foreign country was 106.65(+/-8.22) months and made in Korea was 113.35(+/-8.97) months. But there was no statistical differences between two groups. And mean survival time of anesthetic machine was shown to be 189.45(+/-6.09) months. It is advisable to replace aging machine before malfunction and failure to protect patients from mishaps stem from equipment failure. We conclude that life cycle of equipment for proper time to replace the equipment is not underestimated to reduce the accident by aging machine failure.
Aging ; Electrocardiography* ; Equipment Failure ; Humans ; Korea ; Life Cycle Stages ; Operating Rooms* ; Retrospective Studies ; Survival Analysis* ; Survival Rate

We tested the hypothesis that the extent of necrosis at the initial MRI predicts the subsequent risk of collapse of the femoral head in a randomized clinical trial conducted to compare the core decompression to the conservative treatment. After the initial clinical evaluation including plain roentgenography and MRI, 37 hips of early-stage osteonecrosis (ON) in 33 patients were randomly assigned to core decompression group or conservative treatment group. All the patients were regularly followed by clinical evaluation including plain roentgenography and MRI at three-month intervals. The extent of ON was estimated on the basis of the percentage of abnormal signal intensity in the weight-bearing portion of the femoral head as determined on a combination in coronal aod sagittal MR images. The angle of necrotic portion in mid-coronal image (A) and that in mid-sagittal image (B) were used to quantify the extent of necrotic portion by the formula; (A/180) x (B/180) x 100%. A strong association was observed between the percentage of necrotic portion and the development of collapse. We concluded that the extent of necrotic portion is a major risk factor of the collapse and proposed a systematic method of classifying the percentage of necrotic portion, which might be useful as a predictive index for the fate of early-stage ON.
Classification* ; Decompression ; Head* ; Hip ; Humans ; Magnetic Resonance Imaging* ; Necrosis ; Osteonecrosis* ; Radiography ; Risk Factors ; Weight-Bearing

This study was conducted to find out the risk factors of hypertension and the effect of thesefactors on blood pressure. The eighteen factors were collected on the subjects of 932 from November 1994 to January 1995 through questionnaire and laboratory test - those were age, sex, education level, body mass index(BMI), family history of hypertension (FHH), triglyceride (TG), blood sugar and lactate dehydrogenase(LDH), etc. The status of blood pressure was classified by the classification of hypertension proposed by Joint National Committee of hypertension, USA. The prevalence of diastolic hypertension was 17.7% and the prevalence of systolic hypertension was 11.6 %. In the frequency analysis on the status of blood pressure, by age, education level, smoking habit, RM, BMI, FBS, LDH, TG, the prevalences were significantly different for both diastolic and systolic hypertension(p(0. 05). By stepwise logistic regression with dichotemization of blood pressure, the following odds ratios were significantly high (p, 0.05) - for diastolic hypertension, age 1.973, BMI 2. 106, FHH 2, 102, LDH 2. 773, TG 1.715, and for systolic hypertension, age 4.414, BMI 1.563, FHH 2.125, RM 0.487, LDH 3.814, TG 2. 707. By multiple regression analysis with blood pressure as dependent variable and these factors as independent variables, the regression equationswere diastolic hypertension =51.07+0.20.age+0.07 BMI+0.02.TG+0.02.LDH+3.22.FHH, and systolic hypertension = 88. 59+0.23.age+0.06.BMI+5.46.FHH-2.62.RM+0.03.LDH+0,03.TG By this study, the significant risk factors of hypertension were age, BMI, TG, family history of hypertension, LDH, and efficient control of hypertension would be expected through control of these factors.
Blood Glucose ; Blood Pressure* ; Classification ; Education ; Humans ; Hypertension* ; Joints ; Lactic Acid ; Logistic Models ; Odds Ratio ; Prevalence ; Risk Factors* ; Smoke ; Smoking ; Triglycerides ; Surveys and Questionnaires

Peritonitis in patients on continuous ambulatory peritoneal dialysis (CAPD) remains a major problem. Peritonitis due to Cryptococcus neoformans is an unusual complication. A 68-year-old woman on prednisolone for Behcets disease and adrenal insufficiency was admitted with chronic renal failure and CAPD was initiated. During her stay in hospital, she was treated with multiple antibiotics for urinary tract infection and CAPD peritonitis with methicillin resistant Staphylococcus aureus (MRSA). She was deteriorated insidiously and C. neoformans was cultured in the dialysate but not in the blood, urine and stool. After three days, she died. We reviewed 385 organisms isolated from 1,325 peritoneal dialysate specimens between 1990 and 2002. Staphylococcus aureus was most frequently isolated (22.6%). Fungus comprises 10.1% of the isolated organisms.
Adrenal Insufficiency ; Aged ; Anti-Bacterial Agents ; Cryptococcus neoformans ; Female ; Fungi ; Humans ; Kidney Failure, Chronic ; Methicillin Resistance ; Peritoneal Dialysis, Continuous Ambulatory* ; Peritonitis* ; Prednisolone ; Staphylococcus aureus ; Urinary Tract Infections

The purpose of this study were to elucidate how sevoflurane affects vascular smooth musde and to understand the intracellular mechanism of sevoflurane. Isolated aortic rings of the rabbit were examined. Rings were mounted on tissue bath containing 40 ml of modified Krebs solution bubbled with 95% O2/5% CO2 and attached to force transducers. The preparations were contracted with either 40 mM KC1, or 0.1 uM norepinephrine followed by 0.1 uM acetylcholine (and 1 nM ryanodine)- or 2.8 mM lidocaine induced relaxation. At steady state contraction or relaxation, the effects of sevoflurane (2, 4, 5%) were studied. The steady state tension before administration of sevoflurane was considered as 100% and the changing tension during sevoflurane was expressed as a percentage. Sevoflurane (2, 4, 5%) produced relaxing effects (99.4+/-0.6, 98.1+/-0.9, 95.9+/-1.0%) on KC1-induced tension, independent of endothelium. Sevoflurane increased tension in the acetylcholine (55.4+/-5.1%)- or lidocaine (75.3+/-8.3%)- relaxed state (acetylcholine: 73.6+/-5.3, 86.8+/-3.2, 94.1+/-5.2%, acetylcholine+ryanodine ; 63.7+/-4.6, 68.6+/-7.2, 70.4+/-2.5%, lidocaine ; 83.7+/-7.0, 84.6+/-12.1, 85.3+/-4.4%). The effects were dose-dependent manner. It is concluded that sevoflurane directly alters vascular contraction or relaxation in relation to Ca2+ mobilization on condition and that mechanism of sevofluranes effects on the sarcoplasmic reticulum may play a primary role.
Acetylcholine ; Anesthetics ; Baths ; Calcium ; Endothelium ; Lidocaine ; Muscle, Smooth ; Norepinephrine ; Rabbits* ; Relaxation ; Sarcoplasmic Reticulum ; Transducers

PURPOSE: Rotavirus is the main cause of infantile diarrheal disease worldwide, especially in patients 3-24 months of age. Infants younger than 3 months of age are relatively protected by transplacental antibody. So the purpose of this study is to evaluate the clinical features and severity of neonatal rotaviral gastroenteritis less than 1 month of age. METHODS: A retrospective chart review was established of 62 neonates less than 1 month of age and with a diagnosis of rotaviral gastroenteritis who had been admitted to Pochon CHA University between June 2002 through July 2004. The rotavirus was examined by stool latex agglutination. RESULTS: During 2 years, the total number of admitted patients for rotaviral gastroenteritis was 688 and among these, less than 1 month of age accounted for 9% (62). The occurrence was generally even distribution from January to July (7.14+/-1.0) but since then decreased (2.4+/-1.8). The most common chief complaint was mild fever (46%) when admitted which subsided within 1 hospital day in most patients. 4 patients had seizure and cyanosis with no typical symptoms of rotaviral gastroenteritis. During admission, all the patients had diarrhea. 17% of the patients had leukocytosis and positive C-reactive protein. In one patient, stool occult blood test was positive but there was no necrotizing gastroenteritis evidence. The mean period of hospital day was 5.8+/-2.5 and breast-milk feeding was 62.9%. CONCLUSION: Neonatal rotaviral gastroenteritis is not a rare disease. Most patients have fever and diarrhea and improve through conservative therapy but a few patients may have severe complications so we must be more cautious about the hygiene for prevention.
Agglutination ; C-Reactive Protein ; Cyanosis ; Diagnosis ; Diarrhea ; Fever ; Gastroenteritis* ; Humans ; Hygiene ; Infant ; Infant, Newborn* ; Latex ; Leukocytosis ; Occult Blood ; Rare Diseases ; Retrospective Studies ; Rotavirus ; Seizures