Hi patti my name is chris . I too have a benign tumor/ whatever it is .. in the middle of my right hippocampus. They first found it in 2007. I also have epilepsy. The doctor said it might be because of this benign tumor. same thing here they told me that they couldn't get a biopsy cuz it's too dangerous. I'm also in watch you wait. The size of 5mm. I get a M r i every 6 months. the biggest thing is I have short term memory problems. I learn to live with it. that's about all I can do.