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  • Title: Computed tomographic findings of environmental asbestos-related malignant pleural mesothelioma.
    Author: Yilmaz UM, Utkaner G, Yalniz E, Kumcuoglu Z.
    Journal: Respirology; 1998 Mar; 3(1):33-8. PubMed ID: 9657657.
    Abstract:
    Malignant pleural mesothelioma (MPM) is not an infrequent fatal neoplasm. It is endemically present in some regions of Turkey due to its aetiological relationship to exposure to environmental fibrous minerals. The aim of this study was to determine the thorax computed tomographic (CT) features of environmental asbestos-related MPM. In this study, we examined retrospectively the CT scans of 46 untreated patients with pathological diagnosis of environmental asbestos-related MPM among 151 patients with malignant pleural mesothelioma in the Izmir Chest Disease and Surgery Hospital. The CT scans were interpreted by consultation of four observers. Malignant pleural mesothelioma was unilateral in 45 (97.2%) of the patients. Pleural effusions were found in 42 (91%) of the patients, pleural calcifications in 12 (26%), contracted hemithorax in 14 (30%), interlobar fissure involvement in 25 (54%) and mediastinal pleural involvement in 26 (57%). A contracted hemithorax was significantly correlated with pleural rind configuration. Pleural thickenings were found in 45 (99%) of the patients. Pleural thickenings were in the form of nodularity in 10 (22%) cases, regular in 12 (27%) cases, as a focal mass in 3 (7%) cases and as a pleural rind in 20 (44%) cases. Pleural thickening was greater than 1 cm in 32 (71%) cases. The most common CT findings in our series were unilateral circumferential pleural thickening, nodular pleural thickening, pleural thickening greater than 1 cm and mediastinal pleural involvement. Generally, pleural effusion was accompanied by this. There was interlobar fissure involvement in half of the patients. There was no pathognomonic CT finding in environmental asbestos-related MPM. But CT was useful in suggesting the diagnosis of malignant pleural disease in the cases with MPM.
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