Brenner tumors constitute about l.5~2.5% of all primary ovarian neoplasms and are almost always benign. It appears to derive from the surface epithelium of the ovary which undergoes metap1asia to form the urothelial-like components. we experienced a case of malignant Brenner tumor with adenocarcinoma and squamous cell carcinoma patterns in a 57-year-old woman. It was partly cystic tumor and contained a 4cm-sized gray yellow, lobulated or papillary solid mass, projecting from the cystic wall. Ultrastructurally, the solid mass was composed of malignant urothelial-like cells with focal glandular differentiation.
Female ; Humans ; Adenocarcinoma

We report a case of angiosarcoma of the jejunum in a 65-year-old female. This angiosarcoma developed 20 years after postoperative irradiation for cervical carcinoma of the uterus. Grossly, the resected jejunum showed a 8 cm long segmental hemorrhagic lesion with multiple, small hemorrhagic nodules or cysts on its serosa and mesentery. Microscopically, the wall of jejunum was infiltrated by epithelioid or polygonal tumor cells arranged in solid nests or lining irregular vascular spaces. The case is of interest that the tumor occurred in the very unusal site for angiosarcoma and the patient had a past history of irradiation for uterine cervical carcinoma 20 years ago. In addition, the resected intestine showed histologic changes of chronic irradiation effect. Therefore, this case supports the view that there is cause and effect relationship between irradiation adn angiosarcoma.
Female ; Humans ; Cysts

BACKGROUND: The College of Medicine at Korea University has lunched the new curriculum which incorporated optional elective courses in 2000. Optional elective course is consisted of 10 subjects. 8 subjects are conducted in classroom lectures and 2 of them are active experiences in research or community service. The purpose of this study is to identify the level of achievement of its own educational goals and objectives. Also, we tried to explore the possibilities of improving this course for the maximum educational effectiveness.. MATERIAL AND METHOD: We conducted a survey and the subjects of this study were second, and third year medical students who finished this course. RESULTS: 84.8% of respondents were aware of the goals of the course. 91.1% of them agreed this course is needed to enhance the effectiveness in undergraduate medical education. Most students agreed the course provide an opportunity to broaden their perspectives of field of medicine(81.4% of respondents). Also, this course provided good informations for students' future career choice(78.6% of respondents). However, students wanted to have more in-depth learning experience. INTERPRETATION: The implementation of the optional elective course at the Korea University, Medical College was successful. Despite of its initial success, the course has to be revised to allow students to get more in - depth study according their own interests.
Curriculum ; Surveys and Questionnaires ; Education, Medical, Undergraduate ; Humans ; Korea ; Learning ; Lectures ; Lunch ; Social Welfare ; Students, Medical

Well differentiated osteosarcomas are variants of osteosarcoma composed mainly of fibrous and osseous tissue with minimal cystologic atypia. This tumor may be misinterpretated as a benign lesion if the radiologic and clinical features are not taken into account. We report a typical case of intraosseous well differentiated osteosarcoma occuring in the left distal femur of a 58-year-old woman. Radiologically, it appered as an ill-defined lesion with a mixture of sclerotic and osteolytic ares. But there was a lack of highly destructive appearance of conventional osteosarcoma. Grossly, the mass occupied a metaphysis of the distal femur with extension into the diaphysis and epiphysis. Multifocal cortical destruction and sclerosis were also associated. Histologically, the mass showed typical features of intraosseous well differentiated osteosarcoma. There were various patterns of osteoid deposits and bone formation mimicking those of fibrous dysplasia, nonossifying fibroma or parosteal osteosarcoma.
Female ; Humans

For quality assurance purposes, the authors correlated aspiration cytology and subsequent tissue findings and examined the reasons for discrepancies. In three months from Jan. to Mar. 1996, 1,383 aspirations were performed, of which 285 (20.6%) had subsequent tissue diagnoses within two months. The aspiration sites were thyroid (483), lymph node (LN) (290), breast (250), soft tissue (154), liver (89), lung (49), salivary gland (26), pancreas (22), gallbladder (3), bone (3), joint (2), adrenal gland (2), scrotum (2), mediastinum (2), omentum (2), oral cavity (1), chest wall (1), and intraabdominal (1) and pelvic cavities (1). A total of 68 discrepancies were identified, and biopsies and smears from these cases were reviewed monthly. In 27 cases (40%), the discrepancy was attributed to sampling error. In five cases (9%), aspiration gave superior results with better sampling and preservation than biopsy. Thirty six cases (53% of discrepant cases) were errors in cytologic diagnosis. We categorized these discrepancies into "A", "B", and "C" ("A": minor disagreement with no affect on patient care, "B": minimal affect on patient care, "C": major affect on patient care), which were 9 (13%), 14 (21%) and 13 (19%) cases, respectively. In thirteen cases of category "C", there were eleven false negative and two false positive diagnoses. Eleven false negative cases included thyroid (3), lymph node (2), breast (2), bone (1), salivary gland (1), lung (1), and liver (1). Three cases of thyroid were papillary carcinomas diagnosed as nodular hyperplasia (1), occasional pleomorphic cells (1), and cystic change (1). Two breast cases of invasive ductal carcinomas were diagnosed as ductal hyperplasia. A malignant lymphoma was diagnosed as reactive hyperplasia and a metastatic carcinoma of LN was diagnosed as tuberculosis. Other cases were malignant tumors of bone, salivary gland, lung, and liver those were misinterpreted as benign lesion or normal. Of two false positive cases, one was nodular hyperplasia of thyroid diagnosed as papillary carcinoma and the other was normal islet cell of pancreas diagnosed as islet cell tumor. A continuous monitoring of laboratory performance is an essential component of the quality control and assurance, and the review of discrepant cases provides useful information for improvement of diagnosis.
Adenoma, Islet Cell ; Adrenal Glands ; Aspirations (Psychology) ; Biopsy ; Breast ; Carcinoma, Ductal ; Carcinoma, Papillary ; Diagnosis ; Gallbladder ; Humans ; Hyperplasia ; Islets of Langerhans ; Joints ; Liver ; Lung ; Lymph Nodes ; Lymphoma ; Mediastinum ; Mouth ; Omentum ; Pancreas ; Patient Care ; Quality Control ; Salivary Glands ; Scrotum ; Selection Bias ; Thoracic Wall ; Thyroid Gland ; Tuberculosis

Cytopathologic findings of two cases of adenoid cystic carcinoma of the trachea are reported. The carcinomas grew as a intratracheal mass. By bronchial washing, brushing and/ or post-bronchoscopic sputum cytology, large cohesive sheets, lobulated clusters, or three dimensional ball-like structures were obtained. They had numerous cyst-like spaces containing characteristic globular basophilic material. The tumor cells were uniform and had a small amount of cytoplasm. Nuclei were small and hyperchromatic. Nucleoli were occasionally observed. The cytological diagnosis was confirmed by bronchoscopic biopsies.
Adenoids* ; Basophils ; Biopsy ; Carcinoma, Adenoid Cystic ; Cytoplasm ; Diagnosis ; Sputum ; Trachea*

The present study was conducted to examine metabolic risk factors and total antioxidant capacity (TAC) of Korean females living in Seoul and to investigate the relationship between the metabolic risk factors and serum TAC. A total of 353 females aged between 20 and 64 participated in the study. Obesity indicators, blood pressure, serum lipid profile and fasting blood glucose were measured as metabolic risk factors. Ferric reducing antioxidant power (FRAP) assay was employed to determine serum TAC of subjects. Obesity indicators such as body mass index, waist circumference and waist-hip ratio were significantly higher in the participants aged > or = 50 y (older group) than in the participants aged 20-49 y (younger group) (p < 0.001). Blood pressure, serum total cholesterol (TC), riglyceride (TG) and fasting blood glucose were also significantly higher in the older group than in the younger group (p < 0.001), demonstrating significant positive correlations between age and MS risk factors. The association between FRAP and MS risk factors were also investigated. FRAP values showed significant positive correlations with age (p = 0.001), serum TG (p = 0.002) and TC (p = 0.03). A tendency of positive association between FRAP and waist circumference was observed without any significant difference (p = 0.06). Increased serum FRAP with central obesity and serum lipids may be interpreted as results of activation of antioxidant defense system against oxidative stress induced by metabolic syndrome (MS) constituent factors. However, to verify the function of FRAP as a potential biomarker of susceptibility to MS various contributors to the plasma antioxidant capacity and their biological relevance related to MS should be elucidated further.
Aged ; Blood Glucose ; Blood Pressure ; Body Mass Index ; Cholesterol ; Fasting ; Female ; Humans ; Obesity ; Obesity, Abdominal ; Oxidative Stress ; Plasma ; Risk Factors ; Waist Circumference ; Waist-Hip Ratio

PURPOSE: The purpose of this study is to analyze the assessment of student performance in Problem-Based Learning, which was an elective course at Korea University College of Medicine, from 2001 to 2003, and to delineate effective strategies for Problem-Based Learning. METHODS: A questionnaire was given to 126 third year Korea University medical students. The questionnaire consisted of 25 items in 2001, 37 in 2002, and 64 in 2003. These items covered self-evaluation and overall evaluation of contents, learning environments, small group activity, and tutor in PBL. The respective reliability of items in scale was .67, .75, .79, and 81. Data was analyzed using the Spsswin.11.0 RESULTS: The results of this study are as follows. By most of all respondents, PBL was recognized as a more effective learning method, more interesting, and able to provide a more diverse spectrum of information than traditional lectures. Neutral or negative responses were given for educational settings. Competence of students was increased in the PBL setting. A large percentage of learning method was through the use of textbooks. Most respondents were satisfied with the small group activity and tutor. CONCLUSION: There should be sufficient educational equipments such as rooms for small group activity, textbooks, and journals for PBL. We have to consider student's characteristics carefully and to make concrete guideline and system for effective Problem based learning.
Surveys and Questionnaires ; Diagnostic Self Evaluation ; Humans ; Korea ; Learning ; Lectures ; Mental Competency ; Problem-Based Learning* ; Students, Medical

Benign ductal or glandular neoplasms of the esophagus unrelated to Barrett esophagus are extremely rare. Only 9 cases have been reported in the English language literature. We now report a case of esophageal gland duct adenoma incidentally found in a 73-year-old man. A 0.8 cm-sized, polypoid submucosal lesion in the distal esophagus was removed. Histologically, the lesion was well circumscribed and consisted of several ducts or cysts with focal papillary configurations. Interstitial lymphocytic infiltration with germinal centers was also observed. The lining cells of ducts or cysts were composed of two layers: an inner intensely eosinophilic luminal duct cell layer and an outer myoepithelial cell layer that was accentuated by alpha-smooth muscle actin. There was no significant nuclear atypia or mitosis. Mucin production was occasionally observed in a few goblet cells. To the best of our knowledge, this is the first case of benign ductal or glandular neoplasm of the esophagus among Koreans.
Actins ; Adenoma ; Aged ; Barrett Esophagus ; Eosinophils ; Esophagus ; Germinal Center ; Goblet Cells ; Humans ; Mitosis ; Mucins ; Muscles ; Neoplasms, Glandular and Epithelial ; Phenobarbital

PURPOSE: The purpose of this study is to develop a MD-MBA joint program that will teach doctors professional hospital management and administration skills. METHODS: To assess the demand for hospital management and administration skills in the medical field, information was gathered from community physicians through a questionnaire. Personal interviews were also conducted with doctors having who graduated from a MD-MBA joint program and those working for hospital consulting firms. We visited institutions in developed countries offering this program and conducted literature reviews. Based on the data collected, a tentative plan for the introduction of a MD-MBA program in Korea was developed. RESULTS: The results of this study are as follows. Community practitioners realize the need for basic management skills and feel that hospital management should be part of undergraduate or graduate medical curriculum. In the United States, there is an annual increase in the number of institutions offering MD-MBA programs and in the number of MD-MBA graduates. These programs are run very systematically. It is apparent that the introduction of this program to Korean medical students is imminent. This program can be offered in Korea at the undergraduate level with the School of Business Administration in charge of the program, with the Medical School in charge, or as a cooperative effort between these two schools. CONCLUSION: Most private practitioners and medical professors recognize the necessity for a MD-MBA program. Systemic and experiential research must be done. Support must be given to finances, human resources and equipment in offering this program.
Commerce ; Curriculum ; Developed Countries ; Humans ; Joints* ; Korea ; Program Development* ; Schools, Medical ; Students, Medical ; United States ; Surveys and Questionnaires