| Summary: | Abstract Background Legionnaire’s disease is one of the major causes of community-acquired pneumonia and is occasionally complicated by neurological symptoms. However, reports of ocular lesions due to Legionnaire’s disease are limited. Case presentation We report the case of a patient with Legionnaire’s disease presenting as bilateral central scotomata due to retinal lesions. The patient consulted due to fever and bilateral central scotomata, as well as other extrapulmonary symptoms. Optical coherence tomography (OCT) showed bilateral accumulations of fluid under the retina, and the patient was diagnosed with bilateral exudative retinal detachment. Later, Legionnaire’s disease was confirmed by pulmonary infiltrates on chest imaging and positive urinary antigen for Legionella pneumophila. After administration of antibiotics, the bilateral central scotomata and bilateral subretinal fluid accumulations completely resolved, as did the other extrapulmonary symptoms and the pulmonary infiltrates. Thus, the bilateral central scotomata due to exudative retinal detachment were thought to be caused by Legionnaire’s disease. Conclusions This case demonstrates that Legionnaire’s disease can present as bilateral central scotomata. We may consider the possibility of extrapulmonary involvement complicating Legionnaire’s disease when we encounter bilateral ocular lesions in patients with fever and pneumonia.
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