title: [Radiographic series on pulmonary masses (9). A nodal shadow caused by pleural effusion].
mesh_terms: D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D008875:Middle Aged; D010996:Pleural Effusion / Q000000981:diagnostic imaging*; D010998:Pleurisy / Q000000981:diagnostic imaging*; D011859:Radiography