Findings and Resolution of Melanoma Perineural Spread Along the Greater Auricular Nerve on FDG PET/CT and MRI

Clin Nucl Med. 2021 Jun 1;46(6):e329-e331. doi: 10.1097/RLU.0000000000003534.

Abstract

We report an unusual case of a 59-year-old man with recurrent right ear melanoma resulting in perineural spread to the right greater auricular nerve. Direct perineural spread to the greater auricular nerve is not commonly reported in melanoma. Our case demonstrates perineural spread along the greater auricular nerve on 18F-FDG PET/CT and MRI. This finding was supported by intraneural invasion noted at the surgical margin of the wide local excision of the right helix melanoma. Resolution of FDG activity and improved MRI appearances of the right greater auricular nerve were seen after immunotherapy treatment.

Publication types

  • Case Reports

MeSH terms

  • Fluorodeoxyglucose F18*
  • Humans
  • Magnetic Resonance Imaging*
  • Male
  • Melanoma / diagnostic imaging*
  • Melanoma / pathology*
  • Melanoma / surgery
  • Middle Aged
  • Peripheral Nerves / pathology*
  • Positron Emission Tomography Computed Tomography*

Substances

  • Fluorodeoxyglucose F18