The Expanding Prominence of Toxic Leukoencephalopathy

Area of Science:

• Neurology
• Radiology
• Toxicology

Background:

• Toxic leukoencephalopathy (TL) affects brain white matter due to leukotoxic agents.
• Since 2001, numerous new leukotoxic disorders and a wider range of causative agents have been identified.
• Understanding the pathophysiology of TL is still evolving.

Purpose of the Study:

• To review the current understanding of toxic leukoencephalopathy.
• To highlight the expanding range of leukotoxins and recognized disorders.
• To emphasize the clinical relevance and potential long-term consequences of TL.

Main Methods:

• Review of existing literature on toxic leukoencephalopathy.
• Analysis of neuroimaging findings, particularly Magnetic Resonance Imaging (MRI) and diffusion tensor imaging.
• Compilation of recognized leukotoxic agents and associated disorders.

Main Results:

• Magnetic Resonance Imaging (MRI) is crucial for diagnosing TL.
• Diffusion tensor imaging provides further insights into white matter injury.
• The spectrum of leukotoxins now includes therapeutic drugs, drugs of abuse, and environmental agents.

Conclusions:

• Toxic leukoencephalopathy is an increasingly recognized clinical entity.
• The expanding list of leukotoxins necessitates ongoing vigilance and research.
• Potential long-term cognitive deficits following toxic white matter injury warrant attention.