Schwannoma CT

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: ; Maneesha Nandimandalam, M.B.B.S.[2]

Overview

CT findings of schwannoma include low to intermediate attenuation, intense contrast enhancement, small tumors typically demonstrate homogeneous enhancement and larger tumors may show heterogeneous enhancement, adjacent bone remodelling with smooth corticated edges

CT scan

CT is not as sensitive or specific for the diagnosis of schwannoma as MRI, but is often the first investigation obtained. It is particularly useful in assessing bony changes adjacent to the tumor. Imaging features include[1]:

  • low to intermediate attenuation
  • Intense contrast enhancement
  • Small tumors typically demonstrate homogeneous enhancement
  • larger tumors may show heterogeneous enhancement
  • Adjacent bone remodelling with smooth corticated edges

References

  1. Rosahl S, Bohr C, Lell M, Hamm K, Iro H (2017). "Diagnostics and therapy of vestibular schwannomas - an interdisciplinary challenge". GMS Curr Top Otorhinolaryngol Head Neck Surg. 16: Doc03. doi:10.3205/cto000142. PMC 5738934. PMID 29279723.

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