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[Computerized tomography of supratentorial meningiomas: results in 32 cases]
Abstract:
Thirty two cases of supratentorial meningiomas diagnosed by computerized tomography and surgically proved are reported. The authors did not included in this series meningiomas of the orbit. The higher frequency is observed in the convexity area (eleven cases), followed by the sphenoidal ridge area (nine cases). There is a predominance in the females (65.6%) over the males (34.3%). The age varies from fourteen to seventy eight and only three patients are below thirties. Homogeneous contrast enhancement of all tumours was obtained by injecting a bolus of 75ml of Vasconray (30g of total iodine per patient) or 80ml of Hypaque 75 (30.8g of iodine). None of them showed the ring pattern observed in cases of abscess, gliomas or metastatic lesions. The edema seen around the tumours tended to be minimal, unless in those tumours located in the frontal region where the mass effect tended to be more pronounced. Hydrocephaly was observed in three cases.
Insights
This study analyzed 32 supratentorial meningiomas, finding they predominantly affect females and occur on the brain convexity. These tumors showed homogeneous contrast enhancement on CT scans, aiding diagnosis.
Area of Science:
- Neurosurgery
- Neuroradiology
- Oncology
Background:
- Supratententorial meningiomas are common primary intracranial tumors.
- Accurate preoperative diagnosis is crucial for surgical planning and patient outcomes.
Purpose of the Study:
- To report findings from 32 surgically confirmed supratentorial meningiomas.
- To describe the demographic, topographic, and imaging characteristics of these tumors.
Main Methods:
- Retrospective analysis of 32 supratententorial meningioma cases.
- Diagnosis confirmed by computerized tomography (CT) and surgical proof.
- Evaluation of tumor location, patient demographics, and CT contrast enhancement patterns.
Main Results:
- Predominant locations: cerebral convexity (11 cases) and sphenoidal ridge (9 cases).
- Female predominance (65.6%) observed, with a wide age range (14-78 years).
- All tumors exhibited homogeneous contrast enhancement on CT; no ring enhancement was noted. Minimal peritumoral edema, except in frontal tumors with pronounced mass effect. Hydrocephalus occurred in 3 cases.
Conclusions:
- CT with contrast enhancement is valuable for diagnosing supratentorial meningiomas.
- Homogeneous enhancement differentiates meningiomas from other intracranial lesions like abscesses or gliomas.
- Understanding demographic and topographic patterns aids in diagnosis and surgical approach.
