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  • Title: Rare Intracranial Recurrent Meningioma with Unique Coexisting Atypical, Papillary and Lipomatous Component: Case Report and Review of Literature.
    Author: Sadiya N, Halbe S, Ghosh M, Ghosh S.
    Journal: World Neurosurg; 2020 Jan; 133():216-220. PubMed ID: 31610245.
    Abstract:
    BACKGROUND: Meningiomas are common central nervous system tumors with a wide range of morphologic variants, the pathogenesis being their complex embryogenesis. Intracranial meningiomas with heterogenous histopathology in the same lesion are common in low-grade meningiomas but less frequent in recurrent and high-grade variants. CASE DESCRIPTION: A 75-year-old male presented elsewhere a year ago with complaints of slurred speech. Magnetic resonance imaging revealed a left frontotemporal, dural-based, extraaxial, solid cystic lesion with doubtful infiltration into the adjacent brain parenchyma. A subtotal excision was done. A diagnosis of meningioma with an aggressive biological behavior was rendered on histology, but the grade was deferred, in view of a single focus of small cell formation and no adjacent brain parenchyma to comment on invasion. The patient presented here with recurrence of his original symptoms. Magnetic resonance imaging of the brain with contrast revealed 2 dural-based, solid cystic enhancing lesions of sizes 29 mm × 25 mm × 24 mm and 25 mm × 16 mm seen at the left frontal region, indenting the adjacent brain parenchyma with diffuse meningeal thickening in the postoperative bed. Microscopy revealed a hypercellular meningeal neoplasm with increased mitosis and a pseudopapillary pattern with lipomatous changes. CONCLUSIONS: To date there are no case reports in current literature with such rare combinations in a recurrent meningioma. This highlights the multipotency of phenotypic transformation of primary meningothelial cells. The presence of papillary features, even if focal, should be quantified in the diagnosis. This is of importance because the most current literature suggests that meningioma harboring a papillary component has an increased risk of recurrence and progression to aggressive behavior.
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