A Case of Conservatively Managed Invasive Ceruminoma and a Review of the Literature

Table 1

Hidradenomata subtypes.

Ceruminous adenoma	Well differentiated. Lack of invasion. Possibility of local recurrence if incompletely excised.
Pleomorphic adenoma	Similar to the pleomorphic adenomas found in sweat and salivary glands. Well-demarcated tumours.
Adenoid cystic carcinoma	Similar to tumours found in salivary glands. Propensity to invade nerves and around nerves.
Ceruminous adenocarcinoma	Infiltrates soft tissue and bone.