title: Actinomycosis of the orbit.
abstract: Actinomycosis is a very rare cause of orbital abscess usually attributable to direct spread from adjacent structures. A case of actinomycosis of the orbit is presented, which was treated as orbital pseudotumour for 3 months before progression of signs and symptoms, despite high dose steroids, led to the diagnosis being reconsidered.
authors.affiliation: Orbital Clinic, Moorfields Eye Hospital, London.
authors.forename: T J
authors.initials: TJ
authors.lastname: Sullivan
authors.forename: G W
authors.initials: GW
authors.lastname: Aylward
authors.forename: J E
authors.initials: JE
authors.lastname: Wright
mesh_terms: D000196:Actinomycosis / Q000000981:diagnostic imaging*; D000328:Adult; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D009916:Orbital Diseases / Q000000981:diagnostic imaging*; D011559:Pseudotumor Cerebri / Q000000981:diagnostic imaging*; D011859:Radiography