No abstract available.

PURPOSE: To describe the CT findings and charicteristic clinical manifestation of primary malignant pulmonarymesenchymal tumors. MATERIALS AND METHODS: This study involved nine histopathologically proven cases of malignantprimary pulmonary mesenchymal tumors, as follows : MFH(n=2), leiomyosarcoma(n=2), pulmonary blastoma(n=1),neurogenic sarcoma(n=1), rhabdomyosarcoma(n=1), liposarcoma(n=1) and hemangiopericytoma(n=1). Two patients weremale and seven were female; their median age was 45. We retrospectively analyzed tumor size, location,characteristic of the peripheral margin, relationship to airways, and whether there was distal atelectasis orobstructive pneumonitis and lymph node involvement. We also reviewed distant metastasis, tumor growth rate and theinterval between surgery and recurrence, as seen on follow-up CT scans(n=6). RESULTS: Lesions were located at theright upper (n=2), right middle (n=1), right lower (n=1) and left lower lobe (n=2); in three cases, the whole leftlung (left upper + left lower lobe) was involved. CT findings showed that in all cases, the largest diameter ofmasses ranged from 3 to 15 cm; a well-demarcated margin was seen (smooth in eight cases, psiculated in one) andthis was well enhanced(inhomogeneous in six cases, homogeneous in three). In six cases, masses encircled ordisplaced the peritumoral small bronchus, and in five cases, were located in the peripheral lung field. In fourpatients who underwent endobronchoscopy, no endobronchial lesions were present, and in six cases scans initial CTscans showed no lymph-node involvement. In two cases, mass size doubled within one month. On initial diagnosis,distant metastasis was seen in seven cases, and in three, recurrent lesions were detected within postoperative sixmonths. CONCLUSION: If in the differential diagnosis of lung cancer, a mass seen on CT images is well demarcated,large, peripheral, inhomogeneously enhanced, encircles or displaces the peritumoral small bronchus, shows earlydistant metastasis, is high locally invasive, and recurs early with relative sparing of the lymph nodes, thepossibility of primary malignant pulmonary mesenchymal tumor shouldbe considered.
Bronchi ; Diagnosis, Differential ; Female ; Follow-Up Studies ; Humans ; Lung ; Lung Neoplasms ; Lymph Nodes ; Neoplasm Metastasis ; Pneumonia ; Pulmonary Atelectasis ; Recurrence ; Retrospective Studies

BACKGROUND: As part of medicine's shift in emphasis toward primary patient care, clinical curriculum is very important in the education of medical students. There are excellent opportunities for general learning of clinical skills especially in dermatological clinical clerkship course. OBJECTIVE: The purpose of this study is to evaluate the dermatological clerkship with questionnaire by students. We would like to find out and look into the way how to improve the clerkship course. METHODS: 103 students filled in well-structured questionnaires after they had finished a 2 week-clinical clerkship course of Department of Dermatology. The questionnaire consisted of overall evaluation of clinical clerkship, of subtypes of clinical clerkship course, and the way how to evaluate students. After finishing the clinical clerkship course, 10 students were interviewed with the results of the questionnaire. RESULTS: Most students were generally pleased with the didactic quality of clerkship. The course of observation of outpatient clinic among various subtypes of clinical clerkship were favored most by the students. The newly developed educational contents revealed not to be properly used. Faculty activity was also scored to be better than average. The test for clinical clerkship was regarded a little difficult to the students. CONCLUSION: The evaluation of didactic quality of clinical clerkship seems very important in the improvement of medical education. The development of the more valid and reliable questionnaire is needed. The overall evaluation of clerkship by various perspectives such as students, faculties, patients and institutions will provide more improvement of quality of clerkship at Dermatology department.
Ambulatory Care Facilities ; Clinical Clerkship ; Clinical Competence ; Curriculum ; Dermatology* ; Education ; Education, Medical ; Humans ; Learning ; Patient Care ; Surveys and Questionnaires ; Students, Medical

Peritonitis is a frequent and serious complication in continuous ambulatory peritoneal dialysis (CAPD) patients. Recently, due to educational promotion in general hygiene and development of laboratory technique for bacterial cultures and sensitivity test, proper use of antibiotics, the incidence of CAPD peritonitis has gradually decreased. However, CAPD peritonitis is still one of the most common causes of peritoneal dialysis failure and of removal peritoneal catheter. It has been suggested that the formation of biofilm on the inner surface of peritoneal catheter leads to relapsing peritonitis and removal of the peritoneal catheter in CAPD patients. The biofilm is a kind of protecting coat which consists of fibrin inhibiting the penetration of antibiotics. It surrounds and covers the bacteria, making them to survive from the attack of antibiotics. Therefore thrombolytic therapy, urokinase modifies the structure of biofilm, and helps the antibiotics penetrating the fibrin coat, eventually amplify the bacteriocidal effect. We experienced two cases of successful treatment with urokinase and antibiotics in CAPD peritonitis patients. The combination of thrombolytic agents and antibiotics might be one of the strategies for the treatment of CAPD patients who experienced it frequently.
Anti-Bacterial Agents ; Bacteria ; Biofilms ; Catheters ; Fibrin ; Fibrinolytic Agents ; Humans ; Hygiene ; Incidence ; Peritoneal Dialysis ; Peritoneal Dialysis, Continuous Ambulatory* ; Peritonitis* ; Thrombolytic Therapy ; Urokinase-Type Plasminogen Activator*

A primary hepatic lymphoma (PHL) is a rare malignancy; misdiagnosis and mistreatment are very common. We report the case of a 56-year-old female who presented with a 2-week history of upper abdominal pain. She exhibited no risk factors for hepatocellular carcinoma (HCC) and her serum tumor marker levels were normal. A computed tomography scan and gadolinium-enhanced magnetic resonance imaging of the liver revealed multiple liver masses, suggestive of multiple liver and lung metastases or an intrahepatic cholangiocarcinoma with lung metastasis. A diagnosis of PHL (a diffuse large B cell lymphoma) was confirmed by biopsy followed by immunohistochemistry. This case emphasizes that a PHL must be considered in the differential diagnosis of space-occupying liver lesions in patients with no risk factors for HCC and normal levels of serum tumor markers. It is notable that neither B cell lymphoma symptoms nor an elevated lactate dehydrogenase level were apparent in this case. We thus report a case of PHL mimicking multiple liver metastases or an intrahepatic cholangiocarcinoma, and we review the literature.
Abdominal Pain ; Biomarkers, Tumor ; Biopsy ; Carcinoma, Hepatocellular ; Cholangiocarcinoma* ; Diagnosis ; Diagnosis, Differential ; Diagnostic Errors ; Female ; Humans ; Immunohistochemistry ; L-Lactate Dehydrogenase ; Liver Neoplasms ; Liver* ; Lung ; Lymphoma* ; Lymphoma, B-Cell ; Lymphoma, Large B-Cell, Diffuse ; Lymphoma, Non-Hodgkin ; Magnetic Resonance Imaging ; Middle Aged ; Neoplasm Metastasis* ; Risk Factors