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Year : 2021  |  Volume : 4  |  Issue : 1  |  Page : 12-14

A case report of atypia in angiomatous microcystic meningioma: A mimicker and masker of intratumoral metastasis in a patient with no known systemic malignancy

1 Department of Pathology, National University Health System, Singapore
2 Division of Neurological Surgery, Ng Teng Fong General Hospital, Singapore

Correspondence Address:
Dr. Char Loo Tan
Department of Pathology, National University Hospital, 5 Lower Kent Ridge Road, Main Building, Level 3, 119074
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/glioma.glioma_31_20

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Intratumoral metastasis is rare, and in the brain, meningiomas are the most common type of primary brain tumors to harbor metastases. We report a case of angiomatous microcystic meningioma associated with intratumoral metastatic lung adenocarcinoma in a patient with no prior history of malignancy, in which the pronounced atypia of the meningioma potentially mimics or masks the minute focus of metastatic cancer. A meticulous search for intratumoral metastasis within the meningioma is recommended if metastasis is clinically suspected. A formal ethical approval for the single case report is waived by the Institutional Review Board of National University Health System, Singapore.

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