Neoplasia of the pleura Pleuropulmonary blastoma 2010-12-20T11:48:57Z A rare cancer originating in the lung or pleural cavity that occurs most often in infants and young children but also has been reported in adults. Pleuropulmonary blastoma is regarded as malignant. SNOMEDCT_US:128763002 HP:0100528 UMLS:C1266144 SNOMEDCT_US:707670009 NCIT:C3732 Neoplasm of the tracheobronchial system