Meningioangiomatosis: MR imaging and pathological correlation in two cases
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Published on: July 5, 2021
Wha-Young Kim1, In-One Kim, Sun Kim
1Department of Radiology, Institute of Radiation Medicine, Neuroscience Research Institute, Seoul National University Medical Research Centre, Seoul, South Korea.
Abstract:
Meningioangiomatosis is a rare, benign neoplastic disorder involving the cortex and leptomeninges. The pathological findings are characterised by proliferation of meningothelial cells and leptomeningeal vessels and calcifications within the mass. We experienced two cases of pathologically confirmed meningioangiomatosis, one as a solitary cortical mass with calcification and the other as a cortical lesion manifested as extensive intracranial haemorrhage. On MRI, the first case showed an isointense cortical mass in the left frontal lobe and homogeneous enhancement on the contrast-enhanced study. The second case showed a target-like lesion with a peripheral dark signal rim on T2-weighted images accompanied by extensive haemorrhage in the adjacent frontal lobe and lateral ventricles.
Insights
Meningioangiomatosis, a rare benign tumor, involves brain cortex and meninges. This study details two cases, highlighting distinct MRI findings and pathological characteristics of this neoplastic disorder.
Area of Science:
- Neuropathology
- Neuroradiology
Background:
- Meningioangiomatosis is a rare benign neoplastic disorder.
- It involves the cerebral cortex and leptomeninges.
Observation:
- Two pathologically confirmed cases of meningioangiomatosis were analyzed.
- Case 1: solitary cortical mass with calcification.
- Case 2: cortical lesion with extensive intracranial hemorrhage.
Findings:
- Pathology shows proliferation of meningothelial cells, leptomeningeal vessels, and calcifications.
- MRI in Case 1 revealed an isointense cortical mass with homogeneous enhancement.
- MRI in Case 2 showed a target-like lesion with a peripheral dark signal rim and adjacent hemorrhage.
Implications:
- Understanding meningioangiomatosis imaging features is crucial for diagnosis.
- Distinguishing it from other brain lesions aids in appropriate patient management.
- Further research into the pathogenesis and treatment of meningioangiomatosis is warranted.