title: Actinomycosis of the common bile duct presenting as chronic cholecystitis.
abstract: Actinomycosis of the common bile duct can masquerade as cholecystitis. This is the first report of a case. The bacteriologic and pathologic characteristics are described. This opportunistic saprophytic organism took advantage of 15 years of prednisone therapy for rheumatoid arthritis. The actinomycosis was successfully treated with tetracycline-deoxycycline for 6 weeks.
mesh_terms: D000196:Actinomycosis / Q000175:diagnosis* / Q000628:therapy; D002764:Cholecystitis / Q000175:diagnosis*; D003137:Common Bile Duct Diseases / Q000175:diagnosis* / Q000628:therapy; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D008875:Middle Aged