Ancient schwannomas are long-standing, benign (WHO grade I) slow growing schwannomas with advanced degeneration. The term “ancient” has been traditionally used to describe schwannomas showing degenerative changes and diffuse hypocellular areas 1-3.
Pathology
These tumors demonstrate nuclear pleomorphism microscopically, which should not be misinterpreted as malignant features 4.
Radiographic features
Features of calcification, hyalinization, and cystic cavitation can be identified on imaging 1-3.
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