Interlobar pleural plaque mimicking a lung nodule in a patient with asbestos exposure.

Computed tomography (CT) is generally superior to plain chest radiographs in differentiating pleural and pulmonary parenchymal lesions. We report a patient with asbestos exposure who had a rare interlobar pleural plaque involving the major fissure. In this patient CT suggested the presence of a lung nodule but the lateral chest radiograph indicated the correct diagnosis.