We report the finding of late persistent increased putaminal F-3,4-dihydroxyphenylalanine (DOPA) uptake following resection of a high-grade glioma involving the lateral portion of the ipsilateral precentral gyrus. Brain MRI findings were consistent with secondary putaminal degeneration. This F-DOPA PET phenomenon possibly represents elevated presynaptic dopamine function secondary to upregulation of the amino acid decarboxylase (AADC) activity, as a compensatory mechanism in response to cortical injury. In the setting of brain tumor surveillance, focal increased striatal F-DOPA uptake should be carefully interpreted in light of MRI findings and pathological changes related to corticostriatal connections.
Late Persistent Increased Putaminal 18F-DOPA Uptake Following Ipsilateral Frontal Resection: Evidence for Corticostriatal Synaptic Plasticity?
MORANA, GIOVANNI;NOBILI, FLAVIO MARIANO;Rossi, Andrea
2015-01-01
Abstract
We report the finding of late persistent increased putaminal F-3,4-dihydroxyphenylalanine (DOPA) uptake following resection of a high-grade glioma involving the lateral portion of the ipsilateral precentral gyrus. Brain MRI findings were consistent with secondary putaminal degeneration. This F-DOPA PET phenomenon possibly represents elevated presynaptic dopamine function secondary to upregulation of the amino acid decarboxylase (AADC) activity, as a compensatory mechanism in response to cortical injury. In the setting of brain tumor surveillance, focal increased striatal F-DOPA uptake should be carefully interpreted in light of MRI findings and pathological changes related to corticostriatal connections.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.