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CT scout image reveals irregular right pleural thickening with large apical mass that erodes the right 4th rib posteriorly. CT images reveal irregular circumferential nodular pleural thickening and masses that involves the costal, mediastinal and diaphragmatic pleura with extension into the fissures.
Associated reduction of right lung volume and erosion of the posterior aspect of right 4th rib.
Diagnosis: Malignant mesothelioma T4N0M0 (pathologically proved)