Isolated dural metastasis mimicking meningioma. A case report.

We report a case of dural metastasis, derailing the neuroradiologic and the rapeutic aspects. The clinical presentation was limited to a progressive le ft hemiparesis. Post-contrast CT scan revealed a heterogeneous high-density mass of the right fronto-parietal convexity. MRI demonstrated dural involv ement mimicking meningioma. Chess X-my showed a right lung opacity, suggest ing the diagnosis of dural metastasis. Surgical resection was performed. Hi stology confirmed the diagnosis of dural metastasis from a poorly different iated carcinoma. Treatment was completed with radiotherapy and chemotherapy . Dural metastases are rarely reported. A review of the literature revealed p rincipally 2 radiological aspects: hemorrhagic effusion and tumor mass. The pathophysiology of dural metastases is still a subject of debate. Two mech anisms have been put forward involving venous and arterial dissemination. A s radiological aspects are confusing, the diagnosis of dural metastasis sho uld be evoked in patients with spontaneous hemorrhagic subdural effusion or a tumor mass involving the dura mater.