|IMAGE OF THE ISSUE
|Year : 2018 | Volume
| Issue : 2 | Page : 114-115
Intracranial ossified metaplastic meningioma: Unusual cause of headache
Department of Radiodiagnosis, Sree Balaji Medical College and Hospital, Chennai, Tamil Nadu, India
|Date of Web Publication||23-Nov-2018|
Dr. Venkatraman Indiran
Department of Radiodiagnosis, Sree Balaji Medical College and Hospital, 7 Works Road, Chromepet, Chennai - 600 044, Tamil Nadu
Source of Support: None, Conflict of Interest: None
|How to cite this article:|
Indiran V. Intracranial ossified metaplastic meningioma: Unusual cause of headache. J Datta Meghe Inst Med Sci Univ 2018;13:114-5
A 33-year-old female presented with a history of headache for 6 months. There was no history of seizures. Plain and contrast-enhanced computed tomography showed a large extra-axial completely ossified lesion with lobulated margins in the left frontal region with extension across the diploic space, into overlying scalp [[Figure 1] and Video 1]. There was no enhancing soft-tissue component. There was no perilesional edema. Craniotomy and near total excision of the tumor was done. Histopathological examination revealed metaplastic meningioma of ossific subtype. Meningiomas, the most common benign intracranial tumors, arise from arachnoid cap cells. They are also the most common nonglial primary tumor and most common extra-axial neoplasm. Meningiomas classically appear as hyperdense homogeneously enhancing mass. Calcification seen in 20%–27% of meningiomas is usually punctuate, but may be large. Ossified meningioma, classified histologically as a phenotype of metaplastic meningioma, is extremely rare and belongs to the WHO Grade I. Other histological phenotypes of metaplastic meningioma include cartilaginous, lipomatous, myxoid, xanthomatous, and cartilaginous tissue. The majority of ossific meningiomas are spinal in location with <20 cases of intracranial ossified meningioma reported so far., Clinical symptoms include headache, dizziness, seizure, blurred vision, and weakness of lower limbs. Surgical removal is the ideal treatment option, with radiotherapy being useful in recurrent cases. Although it is not extensively studied, overall prognosis of metaplastic meningiomas is good.
|Figure 1: Computed tomography (a) scanogram and (b-e) sections in bone window showing a large, well-defined extra-axial ossified lesion with lobulated margins lesion in the left frontal region with extension across the diploic space, into the overlying scalp tissue and (f) showing the same lesion in brain window|
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The authors certify that they have obtained all appropriate patient consent forms. In the form the patient(s) has/have given his/her/their consent for his/her/their images and other clinical information to be reported in the journal. The patients understand that their names and initials will not be published and due efforts will be made to conceal their identity, but anonymity cannot be guaranteed.
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