title: Polypoid endobronchial extension from invasive thymoma.
abstract: A case of invasive thymoma which was manifest clinically as bronchial obstruction and metastatic liver tumour is presented. Autopsy revealed a unique polypoid endobronchial extension of the neoplasm. This represents a previously unrecognized pattern of secondary bronchial involvement by invasive thymoma.
mesh_terms: D001984:Bronchial Neoplasms / Q000473:pathology* / Q000556:secondary; D006801:Humans; D008113:Liver Neoplasms / Q000473:pathology* / Q000556:secondary; D008297:Male; D008479:Mediastinal Neoplasms / Q000473:pathology*; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D013945:Thymoma / Q000473:pathology* / Q000556:secondary