Lung - nontumor
Other interstitial pneumonitis / fibrosis

Author: Elliot Weisenberg, M.D. (see Authors page)

Revised: 1 March 2017, last major update September 2011

Copyright: (c) 2003-2017,, Inc.

PubMed search: PVP [title] pulmonary

Cite this page: PVP. website. Accessed March 28th, 2017.
Definition / General
  • Crospovidone, a N-vinyl-2-pyrrolidone polymer, is used as a disintegrant in pharmaceutical tablets
  • May embolize to lung if injected IV
Micro Description
  • Deeply basophilic, coral-like particles within pulmonary arteries and in extravascular foreign body granulomas
  • Associated with inflammatory cells
Micro Images

Images hosted on other servers:

Embolized crospovidone

Positive Stains
Negative Stains
Electron Microscopy Description
  • Irregular, electron dense, laminated finely granular material
Electron Microscopy Images

Images hosted on other servers:

Intrapulmonary crospovidone

Additional References