Which diffuse parenchymal lung diseases (DPLDs) are characterized as subacute?

Updated: Sep 15, 2020
  • Author: Eleanor M Summerhill, MD, FACP, FCCP; Chief Editor: Zab Mosenifar, MD, FACP, FCCP  more...
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Subacute presentations with a variable course are typified by COP. COP often develops weeks or months after the onset of a flulike illness. Patients can present to medical attention with dyspnea or exercise intolerance. The course is variable and may either spontaneously remit or progress. The disorder is thought to be very responsive to steroid therapy, although it may recur when steroids are withdrawn or tapered. In some cases, COP may progress to end-stage fibrotic lung disease.

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