title: Bronchial cast shadow due to cellular impaction of the bronchi.
abstract: The genesis of unusual radiographic shadows by bronchi filled with tumor cells is reported. These shadows, similar to those caused by mucus or pus, are rod-like and indicate the replacement of air by water dense materials. The unifying term, "bronchial cast shadow" is proposed as the radiographic diagnostic sign.
mesh_terms: D001984:Bronchial Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D018288:Carcinoma, Small Cell / Q000000981:diagnostic imaging* / Q000473:pathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography