<unk>  is a malignant neoplasm derived from<unk>  glands of the external auditory canal. This tumor is rare, with several names used in the past. Synonyms have included cylindroma, ceruminoma,<unk> , not otherwise specified (NOS),<unk>  adenoid cystic carcinoma (ACC), and<unk>  mucoepidermoid carcinoma.
Ceruminous adenocarcinoma
Adenosquamous carcinoma
Anaplastic carcinoma
Squamous cell carcinoma
Adenoid cystic carcinoma
Ceruminous adenoma
Adenocarcinoma
Squamous cell papilloma