Preservation of the substanitia nigra and locus coeruleus in a patient receiving levodopa (2 kg) plus decarboxylase inhibitor over a four‐year period

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Abstract
A 72‐year‐old hypertensive man developed parkinsonism and was treated with Sinemet for 4 years but then died of a bronchial carcinoma. Necropsy revealed cerebrovascular disease and amyloid angiopathy. The substantia nigra and locus coeruleus were normal on light microscopy.