Paraneoplastic encephalitis associated with cystic teratoma is detected by fluorodeoxyglucose positron emission tomography with negative magnetic resonance image findings

Clin Nucl Med. 2003 Nov;28(11):893-6. doi: 10.1097/01.rlu.0000093284.54060.aa.


The role of fluorodeoxyglucose (FDG) positron emission tomography (PET) as a functional imaging technique used in the evaluation of a variety of malignancies has been well known. Paraneoplastic encephalitis is a rare central nervous complication, which has been reported in some tumors. Traditionally, magnetic resonance imaging of the brain is performed to aid in its diagnosis. The authors report a case of paraneoplastic encephalitis, associated with cystic teratoma, which had positive FDG-PET findings but appeared normal on magnetic resonance imaging.

Publication types

  • Case Reports

MeSH terms

  • Adult
  • Brain / diagnostic imaging*
  • Brain / pathology
  • Female
  • Fluorodeoxyglucose F18*
  • Humans
  • Magnetic Resonance Imaging*
  • Mediastinal Neoplasms / complications*
  • Paraneoplastic Syndromes, Nervous System / diagnosis
  • Paraneoplastic Syndromes, Nervous System / diagnostic imaging*
  • Radiopharmaceuticals
  • Teratoma / complications*
  • Tomography, Emission-Computed*


  • Radiopharmaceuticals
  • Fluorodeoxyglucose F18