Multiple Recurrence and Foreign-body Granuloma after Total Removal of Falx Meningioma

—Case Report—

Abstract

Eight months after total removal of a falx meningioma, a computed tomographic scan disclosed five enhanced masses near the operative site. The enhancement was ring-like in one mass and homogeneous in the others. All were initially thought to be tumor recurrences, but the mass exhibiting ring enhancement proved to be a granuloma that had formed around a cotton pledget, which was inadvertently left during the first surgery. The radiological findings of postoperative intracranial foreign-body granuloma and the cytological features of recurrent meningioma are discussed.