title: [Periapical actinomycosis: a case report].
mesh_terms: D000196:Actinomycosis / Q000473:pathology*; D000293:Adolescent; D003751:Dental Fistula / Q000209:etiology; D006801:Humans; D008297:Male; D010482:Periapical Abscess / Q000473:pathology*