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[ 18 F]FDOPA PET and clinical features in parkinsonism due to manganism
Author(s) -
Racette Brad A.,
Antenor Jo Ann,
McGeeMinnich Lori,
Moerlein Stephen M.,
Videen Tom O.,
Kotagal Vikas,
Perlmutter Joel S.
Publication year - 2005
Publication title -
movement disorders
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.352
H-Index - 198
eISSN - 1531-8257
pISSN - 0885-3185
DOI - 10.1002/mds.20381
Subject(s) - parkinsonism , putamen , magnetic resonance imaging , positron emission tomography , medicine , pathophysiology , pathology , nuclear medicine , globus pallidus , radiology , disease , central nervous system , basal ganglia
Manganese exposure reportedly causes a clinically and pathophysiologically distinct syndrome from idiopathic Parkinson's disease (PD). We describe the clinical features and results of positron emission tomography with 6‐[ 18 F]fluorodopa ([ 18 F]FDOPA PET) of a patient with parkinsonism occurring in the setting of elevated blood manganese. The patient developed parkinsonism associated with elevated serum manganese from hepatic dysfunction. [ 18 F]FDOPA PET demonstrated relatively symmetric and severely reduced [ 18 F]FDOPA levels in the posterior putamen compared to controls. The globus pallidum interna had increased signal on T1‐weighted magnetic resonance imaging (MRI) images. We conclude that elevated manganese exposure may be associated with reduced striatal [ 18 F]FDOPA uptake, and MRI may reveal selective abnormality within the internal segment of the pallidum. This case suggests that the clinical and pathophysiological features of manganese‐associated parkinsonism may overlap with that of PD. © 2005 Movement Disorder Society