This tumor only affects the outer 1/3 to 1/2 of the external auditory canal as a primary site. If this area is not involved, the diagnosis should be questioned. The most common tumor type is<unk>  adenoid cystic carcinoma and<unk> , NOS.
Ceruminous adenocarcinoma
Adenosquamous carcinoma
Anaplastic carcinoma
Squamous cell carcinoma
Adenoid cystic carcinoma
Ceruminous adenoma
Adenocarcinoma
Squamous cell papilloma