I' ve been diagnosed with a ossecus excresence representing an Osteoma/Exostosis arising in the roof of the internal auditory canal at the porus acousticus, causing significanat luminal compromise. My symtoms are occasional lightheadedness, roaring sound in my right ear and some facial numbness. Has anyone else experienced this....my doctor has me in a "watch and wait" status since the tumor/growth is approx 5 x 7 mm.