99mTc HM-PAO SPECT in pediatric migraine.

99mTC HM-PAO SPECT brain imaging was performed during the headache-free period in 19 young migraineurs, affected by common migraine (CM, 10 cases), classic migraine (CLM, 6 cases) and hemiplegic migraine (HM, 3 cases). SPECT findings were negative in all 10 patients with CM, in 3 cases of CLM and in 2 cases of HM. Positive findings in the remaining 4 patients (3 cases of CLM and 1 of HM) showed a decreased tracer distribution in the temporo-occipital regions (2 cases) and parietal regions (2 cases): the two with decreased temporo-occipital perfusion reported prodromal symptoms exclusively contralateral to the areas of hypoperfusion.

[Brain tumors: classification and clinical aspects].

Brain tumors represent 40% to 50% of all solid tumors in children under 18 years of age, with an average incidence of 2 to 5 cases per 100,000/annum. These tumors are gliomas in 60% to 70% of cases. The most common location is infratentorial (60% of cases), with cerebellar astrocytomas, medulloblastomas and brain stem gliomas occurring in equal measure (20%).