A window into the whole story

temporal bone plasmacytoma presenting with a mobile third window

Jacob M. Pogson*, Rachael L. Taylor, Elizabeth O. Thompson, John S. Magnussen, Miriam S. Welgampola, G. Michael Halmagyi

*Corresponding author for this work

Research output: Contribution to journalArticle


A 63-year-old man presented with imbalance when coughing due to a respiratory tract infection. He had a history of multiple myeloma with a plasmacytoma of the left temporal bone. Examination revealed a positive leftward head impulse test, no spontaneous nystagmus, left-beating positional nystagmus, and left-beating Valsalva-induced nystagmus. Videonystagmography, audiology, and comprehensive vestibular function tests revealed a subtotal left peripheral audio-vestibular loss. Temporal bone computed tomography showed an unchanged bony erosion of the left labyrinth from 2 years prior. Vertigo subsided after treatment of the respiratory tract infection. Although no tumor progression was evident, coughing had triggered a preexisting third mobile window to declare itself.

Original languageEnglish
Number of pages4
Early online date4 Aug 2020
Publication statusE-pub ahead of print - 4 Aug 2020


  • audiology
  • dehiscence
  • plasmacytoma
  • temporal bone
  • Vestibular system

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