Bilateral low lobar atelectasis in a young woman with adult-onset Still's disease

Adult-onset Still's disease (AOSD) is an uncommon inflammatory condition of unknown origin and pathogenesis. Pulmonary manifestations are rare and include pleuritis and transient radiological infiltrations. We report a case of a young woman with AOSD who developed unusual respiratory symptoms, with bilateral lower lobar atelectasis and restrictive syndrome and reviewed the literature on it. We illustrate the difficulties in diagnosis of atypical pulmonary defect with unusual radiological aspects and discuss causality relationship between lung abnormalities and Still's disease.