title: Residents' corner. Answer to case of the month #28. Empyema necessitatis secondary to pulmonary actinomycosis.
authors.affiliation: Department of Radiological Sciences and Diagnostic Imaging, Foothills Hospital, Calgary, Alta.
authors.forename: R T
authors.initials: RT
authors.lastname: van Wiltenburg
authors.forename: R R
authors.initials: RR
authors.lastname: Gray
mesh_terms: D000196:Actinomycosis / Q000150:complications / Q000000981:diagnostic imaging*; D000368:Aged; D016724:Empyema, Pleural / Q000000981:diagnostic imaging* / Q000209:etiology; D006801:Humans; D008171:Lung Diseases / Q000150:complications / Q000000981:diagnostic imaging*; D008297:Male; D014057:Tomography, X-Ray Computed