Summary
CT findings of 6 cases with germinoma originating in the basal ganglia and thalamus are reported. The early finding of germinoma in this region on plain CT, was an irregularly defined, slightly high density area without mass effect. Repeated CT scanning showed enlarging iso-density lesion accompanied by mass effect to high. Intratumorous cysts and calcifications were frequently observed. The tumor showed mild to moderate and inhomogeneous enhancement by intravenous injection of contrast medium. A tendency to ipsilateral hemicerebral atrophy was found in one case. These findings were somewhat different from those of germinomas in the pineal and suprasellar regions. This phenomenon may be related to the anatomical difference of the brain where the tumor originated.
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Soejima, T., Takeshita, I., Yamamoto, H. et al. Computed tomography of germinomas in basal ganglia and thalamus. Neuroradiology 29, 366–370 (1987). https://doi.org/10.1007/BF00348916
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DOI: https://doi.org/10.1007/BF00348916