title: Pulmonary blastoma: radiologic findings in five patients.
abstract: OBJECTIVE
  To determine the radiologic findings of pulmonary blastoma on chest radiograph and CT.
  
  
  METHODS
  Chest radiographs and CT scans of five patients with pathologically proven pulmonary blastoma were retrospectively evaluated and radiologic findings were correlated with histopathologic findings.
  
  
  RESULTS
  On chest radiograph, the pulmonary blastoma manifested as a solitary parenchymal mass (n = 2), a solitary parenchymal nodule (n = 1), hilar bulging with fingerlike parenchymal opacities (n = 1), or opacification of hemithorax (n = 1). On CT, the pulmonary blastoma manifested as a solitary parenchymal mass (n = 2), a solitary parenchymal nodule (n = 1), an endobronchial mass with postobstructive pneumonitis (n = 1), or a parenchymal mass with multiple subpleural masses and pleural effusion (n = 1).
  
  
  CONCLUSIONS
  Pulmonary blastomas most commonly manifested as a solitary parenchymal mass on chest radiograph and CT. These radiologic features are nonspecific and many primary or metastatic tumors of the lung could be included in differential diagnosis.
authors.affiliation: Department of Radiology and the Institute of Radiation Medicine, Seoul National University College of Medicine, SNUMRC, 28 Yongon-dong, Chongno-gu, Seoul 110-744, Republic of Korea.
authors.forename: Hyun Ju
authors.initials: HJ
authors.lastname: Lee
authors.forename: Jin Mo
authors.initials: JM
authors.lastname: Goo
authors.forename: Kyoung Won
authors.initials: KW
authors.lastname: Kim
authors.forename: Jung-Gi
authors.initials: JG
authors.lastname: Im
authors.forename: Jin-Hwan
authors.initials: JH
authors.lastname: Kim
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000000981:diagnostic imaging*; D008297:Male; D018202:Pulmonary Blastoma / Q000000981:diagnostic imaging*; D013902:Radiography, Thoracic; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed