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Acute sixth-nerve palsy after vincristine therapy
S C Lash1, C P R Williams, C S Marsh
1Department of Opthalmology, Southamton General Hospital, Southampton, England.
Summary
Vincristine, a chemotherapy drug, can cause neurologic side effects. A rare case of acute sixth-nerve palsy was observed following vincristine treatment for acute lymphoblastic leukemia.
Area of Science:
- Oncology
- Neurology
- Pharmacology
Background:
- Vincristine is a widely used chemotherapy agent effective against various cancers.
- Increased use of vincristine has correlated with a rise in reported neurologic adverse events.
- Acute lymphoblastic leukemia (ALL) is a common indication for vincristine therapy.
Observation:
- A patient undergoing vincristine treatment for ALL developed acute sixth-nerve palsy.
- The onset of sixth-nerve palsy occurred shortly after vincristine administration.
- This specific neurologic side effect has not been previously documented in association with vincristine.
Findings:
- The case report details an unusual neurologic complication of vincristine therapy.
- Acute sixth-nerve palsy (abducens nerve palsy) is characterized by the inability to move the eye outward.
- This finding highlights a previously unrecognized adverse effect of vincristine.
Implications:
- Clinicians should be aware of the potential for vincristine to induce sixth-nerve palsy.
- Further research may be warranted to understand the mechanism and incidence of this side effect.
- This case expands the known spectrum of vincristine-induced neurotoxicity in cancer patients.