Psychogenic parkinsonism : A combination of clinical, electrophysiological, and [123I]-FP-CIT SPECT scan explorations improves diagnostic accuracy
Identifieur interne : 004A31 ( Main/Merge ); précédent : 004A30; suivant : 004A32Psychogenic parkinsonism : A combination of clinical, electrophysiological, and [123I]-FP-CIT SPECT scan explorations improves diagnostic accuracy
Auteurs : Sandrine Benaderette [France] ; Paolo Zanotti Fregonara [France] ; Emmanuelle Apartis [France] ; Charles Nguyen [France] ; Jean-Marc Trocello [France] ; Philippe Remy [France] ; Jean-Yves Devaux [France] ; Serge Askienazy [France] ; Marie Vidailhet [France]Source :
- Movement disorders [ 0885-3185 ] ; 2006.
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- Pascal (Inist)
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Abstract
We evaluated the concordance between independent clinical, electrophysiological, and [123I]-FP-CIT SPECT scan explorations as a staged procedure for an accurate diagnosis in 9 patients referred with a diagnosis of suspected psychogenic parkinsonism. Three patients were reclassified as pure psychogenic parkinsonism (PP), 6 with a form of combined psychogenic parkinsonism and Parkinson's disease (PP + PD), and none with pure Parkinson's disease (PD). Electrophysiological recordings showed the characteristics of psychogenic tremor in 5 of 7 patients with tremor. In two of these 5, PD tremor was also recorded. SPECT scan results were abnormal in five of 9 patients. In one case of clinically suspected PP + PD, SPECT scan results were normal. Long-term follow-up supported the final diagnosis of PP (initial clinical misdiagnosis). Electrophysiology contributes to the clinical diagnosis of psychogenic tremor and may help confirm associated organic PD tremor. [123I]-FP-CIT SPECT is a robust test to ascertain dopaminergic denervation and increase the confidence of the clinical and electrophysiological diagnosis of associated PD. A combination of clinical, electrophysiological, and [123I]-FP-CIT SPECT scan explorations improves diagnostic accuracy in order to distinguish PP from PP + PD.
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<series><title level="j" type="main">Movement disorders</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Accuracy</term>
<term>Diagnosis</term>
<term>Exploration</term>
<term>Nervous system diseases</term>
<term>Neurophysiology</term>
<term>Parkinson disease</term>
<term>Parkinsonism</term>
<term>Photon</term>
<term>Psychogenic</term>
<term>Single photon emission tomography</term>
<term>Tremor</term>
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<keywords scheme="Pascal" xml:lang="fr"><term>Système nerveux pathologie</term>
<term>Parkinsonisme</term>
<term>Parkinson maladie</term>
<term>Tremblement</term>
<term>Psychogène</term>
<term>Tomoscintigraphie émission monophotonique</term>
<term>Photon</term>
<term>Exploration</term>
<term>Diagnostic</term>
<term>Précision</term>
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<front><div type="abstract" xml:lang="en">We evaluated the concordance between independent clinical, electrophysiological, and [<sup>123</sup>
I]-FP-CIT SPECT scan explorations as a staged procedure for an accurate diagnosis in 9 patients referred with a diagnosis of suspected psychogenic parkinsonism. Three patients were reclassified as pure psychogenic parkinsonism (PP), 6 with a form of combined psychogenic parkinsonism and Parkinson's disease (PP + PD), and none with pure Parkinson's disease (PD). Electrophysiological recordings showed the characteristics of psychogenic tremor in 5 of 7 patients with tremor. In two of these 5, PD tremor was also recorded. SPECT scan results were abnormal in five of 9 patients. In one case of clinically suspected PP + PD, SPECT scan results were normal. Long-term follow-up supported the final diagnosis of PP (initial clinical misdiagnosis). Electrophysiology contributes to the clinical diagnosis of psychogenic tremor and may help confirm associated organic PD tremor. [<sup>123</sup>
I]-FP-CIT SPECT is a robust test to ascertain dopaminergic denervation and increase the confidence of the clinical and electrophysiological diagnosis of associated PD. A combination of clinical, electrophysiological, and [<sup>123</sup>
I]-FP-CIT SPECT scan explorations improves diagnostic accuracy in order to distinguish PP from PP + PD.</div>
</front>
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<affiliations><list><country><li>France</li>
</country>
<region><li>Île-de-France</li>
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<name sortKey="Askienazy, Serge" sort="Askienazy, Serge" uniqKey="Askienazy S" first="Serge" last="Askienazy">Serge Askienazy</name>
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<name sortKey="Devaux, Jean Yves" sort="Devaux, Jean Yves" uniqKey="Devaux J" first="Jean-Yves" last="Devaux">Jean-Yves Devaux</name>
<name sortKey="Fregonara, Paolo Zanotti" sort="Fregonara, Paolo Zanotti" uniqKey="Fregonara P" first="Paolo Zanotti" last="Fregonara">Paolo Zanotti Fregonara</name>
<name sortKey="Nguyen, Charles" sort="Nguyen, Charles" uniqKey="Nguyen C" first="Charles" last="Nguyen">Charles Nguyen</name>
<name sortKey="Remy, Philippe" sort="Remy, Philippe" uniqKey="Remy P" first="Philippe" last="Remy">Philippe Remy</name>
<name sortKey="Remy, Philippe" sort="Remy, Philippe" uniqKey="Remy P" first="Philippe" last="Remy">Philippe Remy</name>
<name sortKey="Trocello, Jean Marc" sort="Trocello, Jean Marc" uniqKey="Trocello J" first="Jean-Marc" last="Trocello">Jean-Marc Trocello</name>
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<name sortKey="Vidailhet, Marie" sort="Vidailhet, Marie" uniqKey="Vidailhet M" first="Marie" last="Vidailhet">Marie Vidailhet</name>
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