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contentuptodate· Content· item f21_57_22429

©2013 UpToDate ® Print Email Duration of COP and IPF prior to diagnosis A comparison of the duration of illness prior to diagnosis in patients with COP and IPF. Seventy-two percent of patients with COP (n = 92) had the diagnosis established within three months of the onset of symptoms versus only 24 percent of those (n = 25) with IPF. COP: cryptogenic organizing pneumonia, also known as bronchiolitis obliterans organizing pneumonia (BOOP); IPF: idiopathic pulmonary fibrosis. Redrawn from: King TE Jr, Mortenson RL, Immunol Allergy Clin North Am 1992; 12:461.