Regional nerve injury after intra-arterial chemotherapy.

Eleven patients at M.D. Anderson Hospital were referred for neurologic evaluation after having their internal or external iliac arteries catheterized for the treatment of localized pelvic or lower extremity tumors. Nine patients developed lumbosacral plexopathies and two patients, mononeuropathies. All symptoms occurred within 48 hours of the intra-arterial infusion. All patients received cis-dichlorodiammine-platinum (cisplatin; CDDP) intra-arterially, alone or in combination with other agents. Follow-up examinations revealed that only one patient had made partial recovery from the neurologic dysfunction. Chemotherapy-induced small vessel injury, with subsequent plexus or nerve infarction, appears to be the most likely cause, although a direct neurotoxic effect of CDDP cannot be excluded.