CT-findings in cystic meningiomas.

Cystic meningiomas are rare, about 10% occurring in children. Only 61 cases have been reported in the literature. Based on 6 of our own cases and the reports in the literature typical CT-findings are described and differentiating features from other cystic mass lesions discussed. If a tumour on CT shows a cystic component, is smoothly outlined, enhances markedly and is attached to the dura, then a preoperative diagnosis of cystic meningioma should be taken into account. This holds especially true if the patient is a child.