title: A rare cause of hemoptysis: benign sugar (clear) cell tumor of the lung.
abstract: A case of benign sugar (clear) cell tumor of the lung with an unusual clinical presentation and its evaluation with computed tomography are reported. A 48-year-old man presented with one episode of hemoptysis. Chest radiographs revealed a round nodule in the lower left lung lobe, and fiberoptic bronchoscopy was normal. On the computed tomography scans, the nodule showed intense post-contrast enhancement (74.7 Hounsfield units). The patient underwent a left thoracotomy, and a segmentectomy was performed. Pathologic examination showed a benign sugar cell tumor of the lung. The patient is alive and has remained free of disease for the last 2 years. To the best of our knowledge, this is the first case report of sugar cell tumor located in lung parenchyma that presented with hemoptysis and the second report of the contrast-enhanced computed tomography findings in this neoplasm.
authors.affiliation: Division of Respiratory Diseases, University of São Paulo School of Medicine, São Paulo, Brazil. alfredonicodemos@hotmail.com
authors.forename: Alfredo N C
authors.initials: AN
authors.lastname: Santana
authors.forename: Flávia S
authors.initials: FS
authors.lastname: Nunes
authors.forename: Nelson
authors.initials: N
authors.lastname: Ho
authors.forename: Teresa Y
authors.initials: TY
authors.lastname: Takagaki
mesh_terms: D018262:Adenocarcinoma, Clear Cell / Q000150:complications* / Q000000981:diagnostic imaging; D006469:Hemoptysis / Q000209:etiology*; D006801:Humans; D008175:Lung Neoplasms / Q000150:complications* / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D014057:Tomography, X-Ray Computed