BACKGROUND: Community-acquired pneumonia(CAP) remains a leading cause of morbidity and mortality worldwide. Recently, the evolution of drug-resistant microorganisms has become a serious problem in CAP management. Specific antimicrobial therapy is the cornerstone of CAP management. However, obtaining an accurate etiologic diagnosis clinically is not easy and empirical antimicrobial treatment is usually administered prior to the correct microbiologic diagnosis. In this study, the clinical usefulness of empirical CAP treatment was investigated. METHODS: A total 35 cases were studied prospectively over a 16-month period in Mokpo Catholic Hospital from Dec. 1995 to Mar. 1997. The microbiologic diagnosis was made by sputum, blood culture, a specific serum antibody test and an immunologic study. RESULTS: The causative organisms were isolated in 10 (30%) out of 33 cases: 8 cases and 1 case on the sputum culture and blood culture respectively, and 1 case by an indirect hemagglutinin test. 12 cases had underlying diseases: pulmonary tuberculosis 4, alcoholism 4, diabetes mellitus 3, and liver cirrhosis 1. Antimicrobial treatment was given empirically and all cases recovered. CONCLUSION: A definite microbiologic diagnosis before commencing the appropriate treatment in CAP is not straightforward. Empirical therapy according to a clinical assessment is important and helpful. However, every effort to make the correct etiologic diagnosis should be taken.
Alcoholism ; Diabetes Mellitus ; Diagnosis ; Hemagglutinins ; Jeollanam-do* ; Liver Cirrhosis ; Mortality ; Pneumonia* ; Prospective Studies ; Sputum ; Tuberculosis, Pulmonary

PURPOSE: Tracheal intubation in a hemorrhagic airway is a difficult procedure because the visibility can be obscured by blood or vomitus. Several devices and methods have been developed to overcome such obstacles, but they are not available at all practical sites. Therefore, this study was conducted to assess the time and success rate of tracheal intubation according to the type of suction tip used in a hemorrhagic airway manikin model. METHODS: This study was a randomized crossover manikin simulation study. We recruited 18 emergency physicians to perform intubation with suction using a Yankauer suction tip and a polyvinyl chloride (PVC) catheter suction tip in a hemorrhagic airway manikin model. We then measured the time and success rate of intubation for each suction tip. RESULTS: The mean intubation time using the Yankauer suction tip was 42.3 seconds, and the mean intubation time using the PVC catheter suction tip was 91.1 seconds (p < 0.001). Two cases of esophageal intubation occurred when the PVC catheter suction tip was used (success rate, 88.9%). In contrast, there was no esophageal intubation when the Yankauer suction tip was used (success rate, 100%) (p=0.217). CONCLUSION: Intubation of a hemorrhagic airway manikin model can be performed in a shorter time when a Yankauer suction tip is used than when a PVC catheter suction tip is used.
Catheters ; Emergencies ; Hemorrhage ; Intubation ; Manikins ; Polyvinyl Chloride ; Polyvinyls ; Suction

OBJECTIVES: The objective of this study was to compare the Korean Personality Rating Scale for Children (K-PRC) profile between children with attention-deficit hyperactivity disorder (ADHD) and typically developing children. We also aimed to investigate the association of K-PRC and ADHD symptoms. METHODS: Ninety-nine youth (age 8.3+/-2.4 years, 72 boys) with ADHD and 84 controls (age 9.2+/-2.5 years, 43 boys) were recruited from the Department of Pediatric Psychiatry of the Asan Medical Center Children's Hospital. Diagnoses of ADHD and comorbid psychiatric disorders were confirmed with the Kiddie-Schedule for Affective Disorders and Schizophrenia-Present and Lifetime Version (K-SADS-PL). The parents of the subjects completed the ADHD rating scale, and K-PRC. Independent t-tests, analysis of covariance, partial correlation analyses, and Mc Nemar test were used for analysis. RESULTS: Children and adolescents with ADHD showed higher K-PRC scores in verbal development, physical development, depression, delinquency, hyperactivity, family dysfunction and psychoticism. Delinquency and hyperactivity were significantly correlated with parent-rated ADHD rating scales and ADHD scores on K-SADS-PL. The hyperactive/impulsive and combined subtypes showed higher scores on hyperactivity and delinquency than the inattentive subtype, and the inattentive subtype showed higher scores on depression and social dysfunction of the K-PRC. CONCLUSION: Our results suggest that K-PRC could be used to comprehensively evaluate symptoms, combined psychopathologies, developmental delay and family dysfunction of children with ADHD.
Adolescent ; Child* ; Chungcheongnam-do ; Comorbidity ; Depression ; Diagnosis ; Humans ; Mood Disorders ; Parents ; Weights and Measures

PURPOSE: Cox-2 expression in breast carcinoma has been reported to be related to angiogenesis, lymph node metastasis and Her-2 expression. The aim of this study is to evaluate the clinicopathologic significance of Cox-2 expression in the invasive ductal carcinomas (IDC) and intraductal carcinomas (DCIS) of the breast. METHODS: The materials were 353 IDC cases and 82 DCIS cases. Immunohistochemical stain for Cox-2 was interpreted as 1+ (weak & focal) and 2+ (diffuse), and the relationships between Cox-2 and ER, PR, Her-2, p53, Ki-67 and bcl-2 expressions were analyzed. RESULTS: There was no significant difference of Cox-2 expression between IDC (148/353, 41.9%) and DCIS (38/82, 46.3%). Cox-2 (2+) expression was more frequent in low grade than intermediate and high grade IDC, but the difference was not significant statistically (P=0.0833), and there were no significant differences of Cox-2 expression according to age, tumor size, nuclear grade, lymph node metastasis in IDC and DCIS cases. In IDC cases, Cox-2 (1+ and 2+) expression showed positive relationships with p53 (+) and more than 10% of Ki-67 labeling index (P=0.0029, P=0.0015), and revealed tendencies of positive relationships with ER (+) and bcl-2 (+) (P=0.0750, P=0.0776). However, no significant relationship between Cox-2 and Her-2 expressions was recognized. In DCIS cases, Cox-2 (2+) expression rate was increased in cases showing negative for Her-2 (P=0.0092) and positive for bcl-2 (P=0.0486). CONCLUSION: Cox-2 expression seems to be involved in the development of breast carcinomas, but not related to the invasiveness. Cox-2 expression, especially 2+, in the DCIS cases suggest a possibility of less aggressive biological behavior.
Breast ; Breast Neoplasms ; Carcinoma, Ductal ; Carcinoma, Intraductal, Noninfiltrating ; Lymph Nodes ; Neoplasm Metastasis

Hemorrhage from esophageal varices is a catastrophic complication of portal hypertension. Endoscopic variceal ligation(EVL) is a newly developed technique that may replace Endoscopic injection sclerotherapy(EIS). But there are a few reports of longterm follow-up of EVL in Korea. We analysed 42 patients to evaluate longterm effect of EVL for esophageal varices. Total 689 variceal ligations were performed during 117 separate EVL sessions. Control rate of acute bleeding was 90.5%(38 of 42 patients). Four patients who were failed on control of acute bleeding were taken EIS with successful bleeding control. The eradication rate of esophageal varix was 76.2%(32 of 42 patients), the mean session for eradication of varix was 3,0(2-6), the number of bands per person was 16.0(5-41), and the number of bands per session was 6.0(4-11). Rebleeding after initiation of EVL occured in 1l of 42 patient(26,2%). 81.8% of rebleeding occurred 6 months later after EVL was done. The mortality rate and survival rate after varix eradication during follow-up period(after 6-45 months, mean: 15.5 months) was each 14.3%(6/42) and 85.7%(36/ 42). The causes of death were hepatic failure (3/6), esophageal variceal bleeding(2/ 6) and hepatic encephalopathy(l/6). After EVL, the~re were no serious treatment-re lated complications: except mild complications: mild chest pain in 5 patient(12.0%), mild substernal pain in 7 patients(16.6%). These results suggest that EVL is a safe and effective method for treatment of variceal bleeding control and eradication of esophageal varices with least serious complication. But regular periodic examination(interval of 4-6 months) and repeat EVL after eradication of varices should be required becuse of recurrence of varix and rebleeding.
Cause of Death ; Chest Pain ; Esophageal and Gastric Varices* ; Follow-Up Studies* ; Hemorrhage* ; Humans ; Hypertension, Portal ; Korea ; Ligation* ; Liver Failure ; Mortality ; Recurrence ; Survival Rate ; Varicose Veins

Esophageal carcinosarcoma is a rare malignant esophageal neoplasm consisting of both carcinomatous and sarcomatous elements, with an incidence of 0.5%. There have been only a few case reports of carcinosarcoma and squamous cell carcinoma coexisting in the esophagus. However, all of these are cases of synchronous or metachronous development of carcinosarcoma after chemoradiotherapy in patients of esophageal squamous cell carcinoma. A 53-year-old man underwent esophagogastroduodenoscopy because of chest pain for several months. Endoscopic examination revealed a huge pedunculated esophageal polypoid mass. Endoscopic submucosal dissection (ESD) was performed and histopathologic examination confirmed spindle cell carcinoma (carcinosarcoma). He refused additional esophagectomy. After 21 months, third follow-up endoscopy showed poorly-demarcated flat, faint discolored lesions at different location from the previous ESD site and endoscopic biopsies confirmed squamous cell carcinoma. To the best of our knowledge, this is the first case of metachronous development of esophageal squamous cell carcinoma in a patient with esophageal carcinosarcoma.
Antineoplastic Agents/therapeutic use ; Carcinoma, Squamous Cell/*diagnosis/drug therapy/pathology ; Carcinosarcoma/*diagnosis/drug therapy/pathology ; Cisplatin/therapeutic use ; Drug Therapy, Combination ; Endoscopy, Digestive System ; Esophageal Neoplasms/*diagnosis/drug therapy/pathology ; Fluorouracil/therapeutic use ; Humans ; Male ; Middle Aged ; Positron-Emission Tomography ; S100 Proteins/metabolism ; Tomography, X-Ray Computed ; Tumor Suppressor Protein p53/metabolism

PURPOSE: We aimed to determine whether Autism Spectrum Disorder (ASD) would show neural abnormality of the social reward system using functional MRI (fMRI). MATERIALS AND METHODS: 27 ASDs and 12 typically developing controls (TDCs) participated in this study. The social reward task was developed, and all participants performed the task during fMRI scanning. RESULTS: ASDs and TDCs with a social reward learning effect were selected on the basis of behavior data. We found significant differences in brain activation between the ASDs and TDCs showing a social reward learning effect. Compared with the TDCs, the ASDs showed reduced activity in the right dorsolateral prefrontal cortex, right orbitofrontal cortex, right parietal lobe, and occipital lobe; however, they showed increased activity in the right parahippocampal gyrus and superior temporal gyrus. CONCLUSION: These findings suggest that there might be neural abnormality of the social reward learning system of ASDs. Although this study has several potential limitations, it presents novel findings in the different neural mechanisms of social reward learning in children with ASD and a possible useful biomarker of high-functioning ASDs.
Brain/*physiopathology ; Brain Mapping ; Case-Control Studies ; Child ; Child Development Disorders, Pervasive/*physiopathology ; Female ; Functional Neuroimaging/*methods ; Humans ; Magnetic Resonance Imaging/methods ; Male ; Neural Pathways/*physiopathology ; Psychiatric Status Rating Scales ; Republic of Korea ; *Reward ; *Social Behavior

PURPOSE: The association between stomach cancer and colorectal cancer is controversial. The purpose of this study was to determine the synchronous prevalence of colorectal neoplasms in patients with stomach cancer. METHODS: A total of 123 patients with stomach cancer (86 male) and 246 consecutive, age- and sex-matched persons without stomach cancer were analyzed from July 2005 to June 2010. All of them underwent colonoscopy within 6 months after undergoing gastroscopy. RESULTS: The prevalence of colorectal neoplasms was significantly higher in the stomach cancer group (35.8%) than in the control group (17.9%) (P < 0.001). Colorectal neoplasms were more prevalent in the patients with stomach cancer (odds ratio [OR], 3.10; 95% confidence interval [CI], 1.71 to 5.63). In particular, the difference in the prevalence of colorectal neoplasms was more prominent in the patients above 50 years old (OR, 3.54; 95% CI, 1.80 to 6.98). CONCLUSION: The results showed that the synchronous prevalence of colorectal neoplasms was higher in patients with stomach cancer than in those without stomach cancer. Therefore, patients with stomach cancer should be regarded as a high-risk group for colorectal neoplasms, and colonoscopy should be recommended for screening.
Colonoscopy ; Colorectal Neoplasms ; Gastroscopy ; Humans ; Mass Screening ; Prevalence ; Stomach ; Stomach Neoplasms

BACKGROUND/AIMS: Several studies reported a subgroup of gastric cancer patients showing elevated serum alpha-fetoprotein (AFP) at the time of diagnosis. We investigated the clinicopathological characteristics and prognostic factors of AFP producing gastric cancer (AFPPGC) by comparing with AFP non-producing gastric cancer (AFPNPGC). METHODS: A total of 909 patients were diagnosed with gastric cancer from January 2005 to March 2013 at Gyeongsang National University Hospital and their AFP levels were measured at the time of diagnosis. After excluding 138 patients with underlying liver diseases, 34 patients with elevated serum AFP level over 10 mg/mL were assigned to AFPPGC group and the remaining 737 patients with serum level of AFP below 10 ng/mL were assigned to AFPNPGC group. RESULTS: The median survival length was shorter in AFPPGC group than AFPNPGC group (18.3+/-25.5 months vs. 30.0+/-22.0 months, p=0.004). The incidence of liver metastasis (47.1% vs. 3.3%, p<0.001) and lymph node metastasis (91.2% vs. 31.6%, p<0.001) was significantly higher in AFPPGC group. The probability of encountering metachronous liver metastasis after the operation was higher in AFPPGC group (44.4% vs. 2.0%, p<0.001). Multivariate analysis revealed that patients in the AFPPGC group who received chemotherapy (p=0.037) or underwent operation (p=0.001) had a better survival rate. CONCLUSIONS: AFPPGC behaves more aggressively and shows a worse prognosis. Therefore, serum AFP level should be routinely checked in all patients diagnosed with gastric cancer.
Aged ; Aged, 80 and over ; Female ; Humans ; Liver Neoplasms/secondary ; Lymphatic Metastasis ; Male ; Middle Aged ; Neoplasm Staging ; Prognosis ; Proportional Hazards Models ; Smoking ; Stomach Neoplasms/*diagnosis/mortality/pathology ; Survival Rate ; Treatment Outcome ; alpha-Fetoproteins/*metabolism

BACKGROUND/AIMS: Several studies reported a subgroup of gastric cancer patients showing elevated serum alpha-fetoprotein (AFP) at the time of diagnosis. We investigated the clinicopathological characteristics and prognostic factors of AFP producing gastric cancer (AFPPGC) by comparing with AFP non-producing gastric cancer (AFPNPGC). METHODS: A total of 909 patients were diagnosed with gastric cancer from January 2005 to March 2013 at Gyeongsang National University Hospital and their AFP levels were measured at the time of diagnosis. After excluding 138 patients with underlying liver diseases, 34 patients with elevated serum AFP level over 10 mg/mL were assigned to AFPPGC group and the remaining 737 patients with serum level of AFP below 10 ng/mL were assigned to AFPNPGC group. RESULTS: The median survival length was shorter in AFPPGC group than AFPNPGC group (18.3+/-25.5 months vs. 30.0+/-22.0 months, p=0.004). The incidence of liver metastasis (47.1% vs. 3.3%, p<0.001) and lymph node metastasis (91.2% vs. 31.6%, p<0.001) was significantly higher in AFPPGC group. The probability of encountering metachronous liver metastasis after the operation was higher in AFPPGC group (44.4% vs. 2.0%, p<0.001). Multivariate analysis revealed that patients in the AFPPGC group who received chemotherapy (p=0.037) or underwent operation (p=0.001) had a better survival rate. CONCLUSIONS: AFPPGC behaves more aggressively and shows a worse prognosis. Therefore, serum AFP level should be routinely checked in all patients diagnosed with gastric cancer.
Aged ; Aged, 80 and over ; Female ; Humans ; Liver Neoplasms/secondary ; Lymphatic Metastasis ; Male ; Middle Aged ; Neoplasm Staging ; Prognosis ; Proportional Hazards Models ; Smoking ; Stomach Neoplasms/*diagnosis/mortality/pathology ; Survival Rate ; Treatment Outcome ; alpha-Fetoproteins/*metabolism