Ear
Inflammatory / infectious / autoimmune / systemic disorders
Granulomatosis with polyangiitis (Wegener's)

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

Revised: 24 September 2018, last major update October 2013

Copyright: (c) 2002-2018, PathologyOutlines.com, Inc.

PubMed Search: Granulomatosis with polyangiitis [title] ear

Cite this page: Pernick, N. Granulomatosis with polyangiitis (Wegener's). PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/earwegenersgran.html. Accessed October 16th, 2018.
Definition / general
  • Systemic necrotizing vasculitis that typically involves kidneys, lung, upper aerodigestive tract
  • Otologic involvement (otitis media, tympanic membrane perforation, sensorineural hearing loss, perforation of ear lobes, external otitis) as well as facial palsy occurs in 20 - 60% who have disease at traditional sites
Terminology
Laboratory
  • Elevated serum ANCA
Treatment
  • Corticosteroids, immunosuppressive drugs may cause long term remission and reverse hearing loss and facial palsy
Microscopic (histologic) description
  • Vasculitis, necrosis or granulomatous inflammation (few cases have all 3)
  • Extra levels / recuts increases sensitivity by 7% (Ann Pathol 2005;25:87)
Differential diagnosis
  • Polyarteritis nodosa: necrotizing vasculitis of small to medium sized muscular arteries
  • Rheumatoid arthritis: conductive hearing loss due to involvement of incus-maleus and incus-stapes articulations