Collaborative Hypertext of Radiology

progressive massive fibrosis

PMF or complicated pneumoconiosis

silicosis (properly "conglomerate nodules", not PMF)
coal worker's pneumoconiosis
discoid density (conglomerate mass) in upper lobe
- retracts toward hilum
- leaves emphysematous change (bullae) at lung periphery

Charles E. Kahn, Jr., MD - 2 February 1995
Last updated: 1 October 2013