[Computed tomography in metastatic brain tumors and meningeal carcinomatosis (author's transl)].
The computed tomogrpahy has been proved to be highly reliable in diagnosis of CNS diseases. The findings in 26 cases of metastatic brain tumors, and 2 cases of meningeal carcinomatosis performed with Hitachi CT-H scanner are analized. Metastatic tumors are seen on plain CT as mainly isodense nodules (60%). But, on enhanced CT, they increase in their density (97%). Larger nodules of metastatic tumors (over 2 cm in diameter) are tend to contain less dense central area, so called central cavitation. The direction of the expansion and/or extension of the perifocal low density is characteristic to the location of the tumor. In cases of meningeal carcinomatosis, diffuse periventricular higher density can be recognized enhanced CT.
D000328:Adult; D000368:Aged; D001932:Brain Neoplasms / Q000000981:diagnostic imaging / Q000556:secondary*; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000000981:diagnostic imaging; D008297:Male; D008577:Meningeal Neoplasms / Q000000981:diagnostic imaging / Q000556:secondary*; D008875:Middle Aged; D009362:Neoplasm Metastasis; D014057:Tomography, X-Ray Computed