Abstract
Brain calcification can be either physiological or pathological. Pathological calcification occurs due to a wide spectrum of causes, including congenital disorders, infections, endocrine/metabolic diseases, cerebrovascular diseases, and neoplasms. The patient's age, localization of the calcification, and association with other imaging findings are useful for the correct diagnosis. Dural arteriovenous fistulas with cortical venous reflux should be included in the differential diagnosis of subcortical calcification via CT. MRA should be conducted subsequently. We recently reported the clinical and imaging characteristics of calcified brain metastases in 20 patients. Hemorrhage, necrosis, or degeneration were detected within the lesions in six patients. Both T1WI and T2WI showed a hyperintense mass surrounded by a hypointense rim in one patient. Hemorrhagic brain metastases can mimic cerebral cavernous malformations. Cancer metastasis should be considered as a differential diagnosis when calcified or hemorrhagic masses are detected in middle-aged and elderly patients. We recommend conducting MRI with Gd enhancement.
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