Acute interstitial pneumonia as first presentation of anti-synthetase syndrome: an atypical case.

Anti-synthetase syndrome is characterized by myositis associated with interstitial lung disease (ILD), the usual pattern of ILD being non-specific interstitial pneumonia type or usual interstitial pneumonia. We report a case of anti-synthetase syndrome presenting as acute interstitial pneumonia which is reported only once before. With this case, we emphasize the need to consider anti-synthetase syndrome even in patients presenting with acute onset ILD. Physicians should raise their index of suspicion in this clinical context as timely diagnosis, early treatment, and a multidisciplinary approach is paramount for optimal care of these patients.