Cranial Intraosseous Meningiomas: CT and MRI Findings

Özet

AIM: To evaluate computed tomography (CT) and magnetic resonance imaging (MRI) findings of cranial intraosseous meningiomas(IOMs).MATERIAL and METHODS: This study included ten patients (six females and four males) with IOMs who underwent cranial CT and/or MRI examinations during May 2009–June 2018. Lesions were classified based on the following locations: the sphenoid ridge,the calvarial convexity, other skull base bones, and the sphenoid ridge + calvarial extension. Bony extension, contour irregularity orradial bone spiculation, bony changes (hyperostotic, lytic, or mixed patterns), dural calcification, cerebral edema, and the presenceof soft tissue were evaluated.RESULTS: A total of eleven IOMs were identified in ten patients. The age of patients was 46–80 (mean: 55.30 ± 9.84) years. Fiveof the lesions were located in the sphenoid ridge + calvarium, three in the sphenoid ridge, two in the skull base, and one in thecalvarial convexity. Seven lesions exhibited radial bone spiculation. Moreover, nine lesions exhibited hyperostotic CT pattern; while,two exhibited a mixed pattern. Three IOMs were accompanied with dural calcification, and peritumoral edema was observed in sixIOMs.CONCLUSION: IOMs are predominantly low-grade tumors, commonly located in the periorbital area and often accompanied bysoft tissue components and dural infiltrations. They most commonly lead to radial bone spiculation and bone expansion. Patientsprimarily have single lesions but may occasionally have multiple ones