title: Pulmonary meningioma: false-positive positron emission tomography for malignant pulmonary nodules.
abstract: An intraparenchymal lung tumor exhibiting the histopathologic and immunophenotypic characteristics of an intracranial meningioma is described. The tumor presented as a solitary asymptomatic pulmonary nodule with increased fluorodeoxyglucose uptake on positron emission tomography. After right upper lobectomy, benign psammomatous meningioma was diagnosed. There was no clinical or radiographic evidence of a central nervous system tumor, suggesting that this was a primary lung tumor. The authors describe a benign tumor that can present as a false-positive finding of positron emission tomography performed to evaluate a possible malignant pulmonary nodule.
mesh_terms: D001921:Brain / Q000000981:diagnostic imaging; D005189:False Positive Reactions; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology; D008579:Meningioma / Q000000981:diagnostic imaging* / Q000473:pathology*; D008875:Middle Aged; D009382:Neoplasms, Unknown Primary / Q000000981:diagnostic imaging; D003074:Solitary Pulmonary Nodule / Q000000981:diagnostic imaging* / Q000473:pathology*; D014055:Tomography, Emission-Computed; D014057:Tomography, X-Ray Computed