Neuropathy is a well known side effect of vincristine, however cranial nerve toxicities are reported less frequently which can involve any cranial nerve in mostly bilateral pattern. As many patients have primary tumors or metastatic lesions in sites that could cause the clinician to overlook this reversible cause of neurologic dysfunction, the potential for misdiagnosis is high. Here, along with review of literature we describe three cases on vincristine who developed cranial neuropathy while on treatment.
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