|Text in Italics is general (instructional) information|
MRI with Gd enhancement
On T2-weighted images, lesions are usually hyperintense, with signal intensity
similar to or lower than that of fatty tissue. Considerable inhomogeneity is
demonstrated in 82% of lesions, with cystic components seen in 77% . Cystic
components with striking fluid-fluid levels are demonstrated in 18% of tumors.
Approximately one third of lesions demonstrate the so-called triple signal pattern
on T2-weighted images.
This pattern consists of the following:
Apposition to bone surfaces without a clear plane of separation is seen in 50-59% of cases as was seen in this case with clear bone erosion or destruction in 22% . Calcifications are not easily seen on MRIs, and they are usually hypointense on images obtained with all sequences. The straight x ray on the previous page shows these calcifications.The straight x ray on the previous page shows these calcifications.