Methadone-induced toxic leukoencephalopathy: MR imaging and MR proton spectroscopy findings

R A Salgado1, P G Jorens, I Baar

  • 1Department of Radiology, Antwerp University Hospital, University of Antwerp, Edegem, Belgium. rodrigo.salgado@uza.be

Insights

Methadone-induced toxic leukoencephalopathy is a rare condition. Imaging findings in this case were similar to, but not identical to, those seen in heroin-induced leukoencephalopathy.

Area of Science:

  • Neurology
  • Radiology
  • Toxicology

Background:

  • Methadone is an opioid agonist used for pain management and opioid use disorder treatment.
  • Toxic leukoencephalopathy is a rare neurological condition affecting the white matter of the brain.
  • Previous reports of leukoencephalopathy related to substance use have primarily focused on heroin inhalation.

Observation:

  • This report details the clinical, MR imaging, and proton MR spectroscopy findings in a middle-aged woman with confirmed methadone-induced toxic leukoencephalopathy.
  • The imaging characteristics of this condition are infrequently documented in medical literature.

Findings:

  • MR imaging revealed specific patterns of white matter abnormalities.
  • Proton MR spectroscopy provided insights into the metabolic changes within the affected brain regions.
  • The observed imaging findings were comparable, yet distinct, to those previously described in cases of neurologic deterioration linked to heroin inhalation.

Implications:

  • This case expands the understanding of methadone's potential neurotoxicity.
  • Recognizing these imaging patterns is crucial for diagnosing methadone-induced toxic leukoencephalopathy.
  • Further research is warranted to elucidate the precise mechanisms and long-term outcomes of this condition.