My son has been diagnosed with a large pituitary tumor. He has too much prolactin and very little testosterone. Every few days he has a raging fit. After it’s done he says he can feel his brain compress which causes the rage. He can’t stop it. And then he can feel the compression slowly decrease and he feels better. Is it possible that an empty Stella can come and go? His mri’s don’t show one, but it makes sense that it would be one when he describes it.