Vincristine induced neurotoxicity in cancer patients

Indian J Pediatr. 2010 Jan;77(1):97-100. doi: 10.1007/s12098-009-0254-3.

Abstract

Ten out of 20 children, treated with usual doses of vincristine for various types of childhood cancers, developed neurotoxicity during treatment. Peripheral neurotoxicity (mixed motor-sensory 4/10, pure motor 3/10, pure sensory 3/10) was seen in the form of weakness of lower limbs, areflexia, neuropathic pain, or sensory loss. Autonomic neuropathy presented as constipation and urinary retention in 2 children, while 2 children developed encephalopathy in form of seizures, confusion, aphasia, and transient blindness. In children with severe neuropathy, vincristine administration was withheld/dose reduced till clinical improvement started, which took about 2-3 weeks time. Nerve conduction velocity showed motor-sensory axonal polyneuropathy. Electrophysiological abnormalities were found to persist even six months after clinical recovery in children with neurotoxicity. We found a relatively higher incidence of vincristine induced neuropathy in Indian children, which was probably due to coexistence of severe malnutrition in them.

MeSH terms

  • Antineoplastic Agents / adverse effects*
  • Child
  • Child, Preschool
  • Female
  • Humans
  • India / epidemiology
  • Male
  • Malnutrition / epidemiology
  • Neoplasms / drug therapy*
  • Neoplasms / epidemiology
  • Neural Conduction / drug effects
  • Peripheral Nervous System Diseases / chemically induced*
  • Peripheral Nervous System Diseases / epidemiology
  • Vincristine / adverse effects*

Substances

  • Antineoplastic Agents
  • Vincristine