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Cavernous hemangiomas. A, Axial postcontrast T1-weighted image shows a large and homogeneously enhancing mass arising from the lateral wall of the left CS. B, Axial postcontrast T1-weighted image in a different cavernoma, which shows inhomogeneous contrast enhancement but also arises from the lateral wall of the CS, pushing the ICA (arrow) medially. When a mass arises in the lateral wall of a CS, the most important differential diagnosis is that of meningioma versus cavernoma.
