Background: The purpose of this study is to discuss the clinical, radiological and histopathological features of a rare grade 2 variant of meningioma which is the most common primary intracranial tumor.
Patients and methods: A retrospective analysis of the data of 6 patients who underwent surgery for a histopathologically proven chodroid meningioma.
Results: Six patients' pathology reports showed chordoid meningioma. On imaging, four lesions (67%) were isointense in T1 while the other two were hypointense. On T2 weighted images, four patients were hyperintense (67%) and displayed non-restricted diffusion pattern with elevated values on corresponding apparent diffusion coefficient maps. Pathologically, chordoid elements varied vastly among cases, radiological characters corresponded to choroid elements in all cases.
Conclusion: choirdoid meningioma, as a rare meningioma entity, should be suspected pre-operatively in cases with high signal intensity in T2, homogenous enhancement and increased apparent diffusion coefficient, gross total surgical excision is curative.
Keywords: Chordoid, meningioma, apparent diffusion coefficient.