CT findings in localized fibrous mesothelioma of the pleural fissure.

Three patients with fibrous mesothelioma of a pleural fissure are presented. Although the appearance of lung surrounding a mass is typical of an intraparenchymal lesion, attention to the position of the mass in relationship to the fissure may suggest the possibility of a pleural mass. Localized fibrous mesothelioma should be included in the differential diagnosis of an apparent solitary lung mass located in the region of a fissure.