Magnetic resonance imaging:
There are not many reports on MRI findings of a GCTB. Most of them
report oval or irregular masses with irregular margins, intermediate
signal intensity in T1-weighted images and mild hyperintensity in
T2-weighted images, with no surrounding edema [14,41,45]. After
contrast injection, most GCTB are described having a homogeneous
enhancement, but rim enhancement was also reported. Kinetics is
variable. There are reports of slow and rapid enhancement
[12,14,16].