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PubMed2001

Virtual tools for imaging of the thorax.

Helical computed tomography (HCT) allows for volume acquisition of the entire thorax during a single apnoea. Combination of HCT acquisition with synchronous vascular enhancement gives rise to HCT angiography (HCTA). In the last decade, HCT and HCTA have revolutionized the diagnosis of thoracic diseases, modifying many diagnostic algorithms. Because HCT provides for a true volume acquisition free of respiratory misregistration, three-dimensional (3D) rendering techniques can be applied to HCT acquisitions. As these 3D rendering techniques present the HCT information in a different format to the conventional transaxial CT slices, they can be summarized as virtual tools. The purpose of this review is to give the readers the most important technical aspects of virtual tools, to report their application to the thorax, to answer clinical and scientific questions, and to stress their importance for patient management, clinical decision making, and research.

Humans↗
PubMed2002

Elevated serum pro-mMP2 levels in patients with advanced lung cancer are not suitable as a prognostic marker.

Using the one-step sandwich enzyme immunoassay for pro-MMP2, we investigated whether the serum pro-MMP2 levels could be used as predictors of the development and extension of lung cancer. The study included 52 lung cancer patients and 26 nonmalignant thoracic disease patients. Serum samples were collected before clinical treatment. The serum pro-MMP2 levels were found to be elevated in patients with lung cancer (1006.3+/-37.4 ng/ml) in comparison with nonmalignant controls (767.7+/-41.6 ng/ml) (P = 0.0002). In addition, stage IIIb lung cancer patients (1167.2+/-124.2 ng/ml) had significantly higher pro-MMP2 levels compared with stage I patients (936.0+/-44.8 ng/ml, P = 0.0431). The serum pro-MMP2 levels were similar in the samples between the pathological subtypes. As a result, the serum pro-MMP2 levels may serve as a marker that can be used as a diagnostic indicator of higher stages in lung cancer. There was no difference in the prognosis between the group with normal pro-MMP2 levels (<850 ng/ml) and the group of elevated pro-MMP2 levels (>850 ng/ml), thus indicating that serum analyses of the pro-MMP2 levels were of limited value in the prognosis of lung cancer.

Biomarkers, Tumor↗
PubMed2001

Nosocomial Exophiala jeanselmei pseudoinfection after sonography-guided aspiration of thoracic lesions.

BACKGROUND AND PURPOSE: During the period from August 1994 to October 1998, a total of 19 isolates of Exophiala jeanselmei were recovered from 17 patients with various underlying thoracic diseases treated at National Taiwan University Hospital. The purpose of this study was to describe the clinical characteristics of these patients and to determine the microbiologic relatedness of the E. jeanselmei. METHODS: Of the 19 isolates, 11 from nine patients were preserved and were identified based on their biotypes as determined by the API ID32C System, their cellular fatty acid profiles by gas-liquid chromatography, their antibiotypes to five antifungal agents by the E-test, and their random amplified polymorphic DNA (RAPD) patterns by arbitrarily primed PCR. Extensive environmental surveillance cultures and cultures from the skin of eight patients and hands of one physician were also performed. RESULTS: One of the 17 patients had E. jeanselmei isolated from cutaneous phaeohyphomycosis (3 isolates), and the other 16 patients had isolations from pleural effusion specimens (15 isolates) or lung mass (1 isolate) following sonography-guided aspiration. The latter 16 patients had no clinical or pathologic evidence of fungal infection. Isolates (clone 1) from aspirated specimens had identical biotypes, antibiotypes, and RAPD patterns, which were different from those of the three isolates (clone 2) from the patient with a cutaneous lesion. All specimens from environmental sources, patients' skin, and the hands of the physician were negative for E. jeanselmei. CONCLUSION: This series of patients demonstrates the difficulty in identifying the sources of a nosocomial pseudoinfection due to this slow-growing microorganism when isolated from pleural effusion specimens.

Adult↗
PubMed1984

Recurrent chest pain in children.

Chest pain in children is relatively common and is often benign and self-limited, but it has received scant attention in the pediatric literature. The author offers rational guidelines for diagnosing the causes of chest pain and comments on the management and follow-up of the patient.

Breast Diseases↗
PubMed1978

Traumatic thoracobiliary (pleurobiliary and bronchobiliary) fistulas: clinical and review study.

Thoracobiliary fistulas are rare complications of thoracoabdominal trauma, with high morbidity and potentially high mortality. Our experience with four cases and 12 other cases collected from the literature are reviewed. All patients were male and average age was 25 years. Five had blunt trauma, three had stab wounds, and eight, gunshot wounds. All had diaphragmatic and hepatic injuries. Bronchobiliary fistulas with biliptysis developed in seven patients. Fever, cough, chest and RUQ pains were the most common presenting symptoms. Pleural effusion and elevated right hemidiaphragm were the most common X-ray findings. Bile empyema developed in 2/3 of the patients. Early diagnosis, tube thoracostomy with adequate drainage of all subphrenic billious collections, and secure closure of all diaphragmatic perforations are essential in successful management of most of these fistulas. Thoracotomy, however, is indicated in chronic and complicated fistulas, and should not be delayed beyond 3 weeks. Judicious use of appropriate antibiotics is a necessary adjunct to adequate surgical management of these fistulas. All 16 patients survived.

Abdominal Injuries↗
PubMed1985

Indications for ultrasound of the chest.

Although ultrasound of the thorax has been used mainly for studying the heart, it is also of value for the examination of pathologic conditions in the chest other than cardiac disease and can be used to complement the diagnostic information obtained by other imaging techniques. In addition, ultrasound of the lower thorax is frequently performed "inadvertently" when the upper abdomen, the liver, and the heart are being examined sonographically. Pathologic lesions in the chest may be seen during such examinations and it is therefore important to be familiar with their appearances.

Diaphragm↗