Modification of tumor enhancement and brain edema in computerized tomography by corticosteroids: case report.

The early administration of corticosteroids to patients with a suspected brain neoplasm is common practice. We present a case that demonstrates the rapid changes in computerized tomographic (CT) images after such therapy. Because surgical approaches for biopsy or tumor resection are frequently based on the CT scan, certain CT scans should be obtained before the institution of corticosteroid therapy.