[Comparison of scintigraphic and neurosurgical findings in brain tumors]

In 120 cases of operated brain tumors the neurosurgical findings are compared with the results of brain scintigraphy with 99mTc-pertechnetate. The study comprises only the frequent types of brain tumors such as meningeoma, astrozytoma, glioblastoma, oligodendroglioma, neurinoma and metastases. From the neurosurgical findinds were evaluated the localisation and size of the tumor, the extent of vascularity, of cysts and necroses. These data were related to the type or radioangiography and the degree of uptake in the scintigraphy. The tumors could be demonstrated by scintigraphy in 105 of the cases. Radioangiography was obviously superior to late scintigraphy in the diagnosis of the type of tumor. The size of the tumor appeared in the meningeomas greater and in the other types of tumor smaller than found by operation. The uptake in scintigraphy showed a correlation to vascularity. Otherwise there was found no correlation between vascularity and type of radioangiography in glioblastomas. This surprising result needs further investigatiion. Half of the cases with cysts and necroses showed an inhomogeneity in the uptake by the tumor.