A 32 year old man affected by grade 1 astrocytoma of the right sylvian region and epileptic seizures, presented gustatory hallucinations as a post-ictal symptom. Spikes of very low voltage during sleep were the only epileptic abnormalities found on his EEG. It is suggested that post-ictal as well as ictal gustatory hallucinations may be a localizing symptom of glioma involving the sylvian region. Furthermore, if systematically searched for, sleep related microspikes may become an EEG sign useful for the diagnosis of brain tumour in patients with epileptic seizures and no epileptic discharges on the awake EEG.
PenfieldW., EricksonT.C., and TarlovI., Relation of intracranial tumour and symptomatic epilepsy, Arch. Neurol. Psychiat. (Chic), 44:300–315, 1940.
2.
Le BlancE., and RasmussenT., Cerebral seizures and brain tumours, in Handbook of Clinical Neurology, Vol. 15, The Epilepsies. North Holland Publishing Company, edit., Amsterdam, 1974, pp. 295–301
3.
LundM., Epilepsy in association with intracranial tumour, Acta Neurol. Scand., Suppl. 18:78–80, 1952.
4.
Fischer-WilliamsM., LastS.L., LyberiG., and NorthfieldD.W.C., Clinico-EEG study of 128 gliomas and 50 intracranial metastatic tumours, Brain, 89:1–46, 1962.
5.
TassinariC.A., MichelucciR., FortiA., and RogerJ., Micropunte: un segno EEG da ricercare nei tumori cerebrali, Riv. Ital. EEG Neurofisiol. Clin., 1983; Suppl.1:123, 1983.
