title: Case records of the Massachusetts General Hospital. Weekly clinicopathological exercises. Case 29-1993. A 54-year-old man with a mass in the thigh and a mass in the lung.
mesh_terms: D000196:Actinomycosis / Q000473:pathology*; D003937:Diagnosis, Differential; D006801:Humans; D008171:Lung Diseases / Q000382:microbiology / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D009132:Muscles / Q000473:pathology; D009220:Myositis / Q000382:microbiology / Q000473:pathology*; D013848:Thigh