Which sign for extra-axial lesions could be present in this kind of tumor?
Dural Tail Sign.
Why do these tumors usually not present with peripheral edema?
Due to its slow-growing, it also presents with the superficial remodeling of the adjacent skull.
Well-circumscribed predominantly cystic lesion at the peripheral right parietal lobe ( precuneus) which is hyperintense in T2/FLAIR, hypointense in T1, after gadolinium administration with vivid ring and thick internal septa enhancement.