[Subacute parkinsonism as first symptom of primary CNS lymphoma].

Secondary parkinsonism due to cerebral neoplasia is a rare condition. We present a case report of a 73-year-old woman with three weeks of progressing right-sided parkinsonism. Cerebral MRI arouse suspicion of left-sided primary CNS-lymphoma in the left basal ganglia. Cerebralspinal fluid analyzed with flow cytometry revealed diffuse B-cell lymphoma. The patient was transferred to the department of haematology and was treated by standard primary CNS-lymphoma protocol. Five-month clinical control revealed marked recovery. At nine-month control an MRI of cerebrum showed almost complete regression of tumour.