Clinical and Radiological Evaluation of a Spontaneously Occluded Intracranial Arteriovenous Malformation

Spontaneous obliteration of brain AVMs is extremely rare estimated less than 1%. We report the case of a 37 year-old female with a history of seizures treated with anticonvulsives, who sought medical attention because of recurrence of her symptoms. The MRI findings were attributed to a patent AVM located at the left occipital lobe. Further radiological exams (angiography, CT, plain radiograms) revealed a totally calcified lesion probably representing an occluded AVM. The prompt diagnosis of spontaneous obliteration of a brain AVM requires a high index of suspicion and multidisciplinary radiologic evaluation with MRI, angiography, CT and plain radiograms.