[X-ray computed tomographic aspects of benign mesotheliomas. Apropos of 4 cases]

Localized pleural mesothelioma or benign mesothelioma is a rare tumor and it has a good prognosis. The value of computed tomography (CT) in the evaluation of pleural disease is now well recognized. However, little information has been written regarding the value of CT in localized pleural mesothelioma. We describe four cases. CT findings include sharply delineated, smoothly contoured masses, often with homogeneous soft tissue density. Angles with the chest wall are obtuse or acute. In case of acute angles, a smoothly tapering margin may be encountered.