well-circumscribed.
broad-based dural attachment.
dural tail sign
They share similar signal characteristics to typical intracranial meningiomas:
Isointense to slightly hypointense
may have a heterogeneous texture
Isointense to slightly hyperintense
Moderate homogeneous enhancement
Occasionally, densely calcified meningiomas are hypointense on T1 and T2, and show only minimal contrast enhancement.