RT Journal Article SR Electronic T1 Acute Unilateral Pneumonitis in a Patient With Polymyositis: A Unique Presentation of Polymyositis-Associated Pneumonitis JF Respiratory Care FD American Association for Respiratory Care SP 1774 OP 1778 VO 52 IS 12 A1 Bobbak Vahid A1 Enrique Machare-Delgado A1 Paul E Marik YR 2007 UL http://rc.rcjournal.com/content/52/12/1774.abstract AB We describe a unique presentation of polymyositis-associated pneumonitis. A 45-year-old man with a history of polymyositis presented with an episode of fever, cough, dyspnea, rapidly progressive respiratory failure, and unilateral pulmonary infiltrates. Although bacterial pneumonia was initially suspected, all cultures, including bronchoalveolar cultures, remained negative, and the patient's condition worsened despite wide-spectrum antibiotics. Lung biopsy showed organizing pneumonia. The patient was treated with systemic corticosteroids and had complete resolution of respiratory failure and pulmonary infiltrates. We discuss polymyositis/dermatomyositis-associated pneumonitis.