Pathology Ossicular erosion is frequent in COM a Infection process per se u Necrosis following vascular thrombosis a It most commonly affect the lenticular process of the incus and head of the stapesPathology ◼ Ossicular erosion is frequent in COM ◼ Infection process per se ◼ Necrosis following vascular thrombosis ◼ It most commonly affect the lenticular process of the incus and head of the stapes