Vincristine-induced paralytic ileus in Parkinson's disease.

We present an elderly patient with metastatic breast cancer and Parkinson's disease (PD) of moderate severity who developed paralytic ileus of protracted course after a low dose of 0.16 mg/m(2) intravenous vincristine. Since colonic myenteric plexus involvement occurs in PD, we suggest that it may predispose to vinca alkaloids-induced autonomic neuropathy. Vincristine should be used with caution in this clinical setup.