Microcystic meningioma: difficulties in diagnosis and magnetic resonance imaging findings

Excerpt

A 45-year-old woman was referred to our hospital with the complaints of dizziness, blurring vision and subsequent syncope. Diffusion and conventional magnetic resonance imaging (MRI) were performed to the patient. The patient’s MRI showed an extra-axial mass of 4 × 2.5 cm in size in the left frontoparietal region. The mass was starting from centrum semiovale level and continuing through the vertex. The mass was hypointense on T1-weighted (W) images, hyperintense on T2W images containing pointwise hypointense areas. It was having microcystic components and minimal peritumoral edema (Fig. 1). After contrast injection, central mild enhancement with reticular appearance and peripheral thin enhancement was revealed (Fig. 2). Diffusion-weighted (DW) imaging showed increased diffusion (Fig. 3). Pathological examination of totally excised lesion was reported as microcystic meningioma.

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