Brief Report: PDF OnlyMerello Marcelo; Esteguy, Marcelo; Perazzo, Florencia; Leiguarda, RamónClinical Neuropharmacology: February 1992 - p 69-74 Buy Abstract Summary A patient with melanoma and sporadic positive melanuria developed Parkinson's disease. Treatment with levodopa failed to modify tumoral progress. However, during chemotherapy with dacarbazine, the patient experienced a significant impairment to levodopa response. © Williams & Wilkins 1992. All Rights Reserved.