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Toluene optic neurotoxicity: magnetic resonance imaging and pathologic features
Shelly R Gupta1, Cheryl Ann Palmer, Joel K Curé
1University of Alabama at Birmingham Department of Ophthalmology, Birmingham, AL 35233, USA.
Human Pathology
|January 18, 2011
Summary
Chronic toluene inhalation can cause severe central nervous system and optic nerve damage. Early diagnosis and stopping exposure are crucial for potential recovery and preventing permanent neurological deficits.
Area of Science:
- Neurology
- Toxicology
Background:
- Toluene is a volatile organic compound found in common household and industrial products.
- Its lipid solubility facilitates rapid absorption into the lipid-rich central nervous system (CNS).
- Prolonged occupational or intentional toluene exposure can result in neurological abnormalities.
Observation:
- Two male patients presented with unexplained multifocal CNS defects.
- Bilateral optic neuropathy was also noted in both patients.
- Extensive diagnostic workups, including MRI, lumbar puncture, blood tests, and brain biopsy, were performed.
Findings:
- Chronic toluene inhalation was identified as the underlying cause of the patients' neurological and ocular symptoms.
- The diagnosis was confirmed after ruling out other potential etiologies through comprehensive testing.
Implications:
- Prompt diagnosis of toluene-induced neurotoxicity is critical for patient outcomes.
- Cessation of toluene exposure can lead to improvement in neurological and ocular symptoms.
- Continued exposure or inhalant abuse may result in irreversible neurological damage and functional loss.
