If an MRI report describes a low flow, low pressure vascular lesion in the left temporal lobe, what is this most likely indicative of?

A low flow, low pressure vascular lesion in the left temporal lobe is most indicative of a cerebral cavernous malformation. These malformations are characterized by clusters of dilated blood vessels with slow blood flow, which is why the MRI report describes it as having low flow and low pressure. This condition is often found incidentally on imaging studies and can vary in symptomatology based on location and size.

Cerebral cavernous malformations are usually not associated with high flow or high pressure, differentiating them from arteriovenous malformations, which typically have a more complex vascular architecture and are prone to bleeding due to their high-pressure characteristics. A lytic aneurysm would present differently on imaging, usually as a focal outpouching or bulge within a blood vessel, and a cerebral embolism refers to a blockage from an embolus, commonly resulting in acute ischemic events rather than a low flow, low pressure lesion.