CT scan diagnosis of parenchymatous cerebral metastases
Casanova, M.F.
Boletin de la Asociacion Medica de Puerto Rico 74(2): 13-15
1982
ISSN/ISBN: 0004-4849 PMID: 6958273 Document Number: 700924
Factors that in conjunction favor metastases over primary brain tumor by CT scanning: 1. More than one lesion. 2. Situation at the junction between the gray and white matter. 3. Homogeneous nodular mass or ring aspect. 4. (a) Disproportionately large amount of vasogenic edema. (b) A significant decrease in size of the edematous region within the first 24 hours after steroid therapy in serial CT scans. 5. Localization in an adult of tumor in the posterior fossa. 6. Evidence of intracranial hemorrhage. Factors against the diagnosis of metastases: 1. Edema other than vasogenic. 2. Presence of calcifications. 3. A tumor size of more than 100 mm. along its longest axis.
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