Anti-Jo-1 Antibody-positive Interstitial Pneumonia in an Elderly Patient with Congenital Rubella Syndrome

A 71-year-old woman with congenital rubella syndrome (CRS) presented with prolonged cough. No physical findings suggested the presence of any connective tissue diseases. Chest computed tomography showed ground-glass opacities and consolidations in the bilateral lower lobes. She had elevated serum Krebs von den Lungen-6, hypoxemia and positive serum anti-Jo-1 antibody. Bronchoalveolar lavage fluid revealed lymphocytosis with a decreased CD4/CD8 ratio. A transbronchial lung biopsy specimen revealed organizing pneumonia. Based on a diagnosis of interstitial pneumonia with autoimmune features (IPAF), systemic corticosteroids were administered, and a good outcome was obtained. A possible relationship between CRS and IPAF is herein discussed.