Nasal cavity, paranasal sinuses, nasopharynx
Inflammatory / infectious lesions

Author: Nat Pernick, M.D. (see Authors page)

Revised: 17 May 2018, last major update November 2004

Copyright: (c) 2004-2018,, Inc.

PubMed Search: Myospherulosis nasal

Cite this page: Pernick, N. Myospherulosis. website. Accessed October 18th, 2018.
Definition / general
  • Iatrogenic lipogranuloma after hemostatic packing of nasal cavity or paranasal sinuses with petrolatum based ointment and gauze
  • Resembles subcutaneous disease of East Africa
Microscopic (histologic) description
  • Large tissue spaces with sac-like structures containing brown spherules resembling Prototheca but actually clumped red blood cells
Negative stains