A<unk>  is a benign glandular neoplasm which arises from the<unk>  glands located within the external auditory canal. These glands are found within the outer one third to one half of the external auditory canal, more common along the posterior surface; therefore, the tumor develops within a very specific location.
Ceruminous adenoma
Sebaceous adenoma
Basal cell adenoma
Pilomatricoma
Ganglion cyst
Sebaceous hyperplasia
Nevus of Ota
Keratin implantation cyst