Conversation: The conversation between human and AI assistant.
[|Human|] My mother had a MRI and results said they saw a leison on the brian. She had a dramatic fall on both knees and hasnt been the same since. Her doctor referred her to a neuro, her symtoms are pain in the legs, cold to hot, pain on her left side, we thought she may have had a stroke. what does leison mean in a MRI to the brain
[|AI|]  Hello dear thanks for your query at ChatDoctorBrain lesions are abnormal areas of tissue in your brain.  On MRI images, for example, brain lesions appear as dark or light spots that don't look like normal brain tissue.  If you've been diagnosed with something described as a brain lesion, it implies that the cause of the abnormal-appearing area cannot be diagnosed by the image alone, and further evaluation is necessary.  A brain lesion may involve small to large areas of your brain, and the severity of the underlying condition may range from relatively minor to life-threatening. Causes for brain lesion: Brain aneurysm Brain AVM (arteriovenous malformation)Brain tumorEncephalitisHy Chat Doctor.