Related Experiment Video
Updated: Oct 2, 2026

Endaural Endoscopic Atticoantrotomy (Retrograde Mastoidectomy) using a Constant Suction Bone-drilling Technique
Published on: May 23, 2021
[Hidradenoma of the external acoustic meatus: ceruminoma]
1Università di Milano, I Clinica Dermatologica.
Abstract:
Benign tumour originating from the ceruminous glands of the external auditory meatus are quite rare and present similar histological features to sweat gland tumours elsewhere. The paper reports the case of a nodule in the external auditory meatus diagnosed as a myoepitheliomatous-type hidradenoma . Three histological forms of benign ceruminous gland tumours are recognised: the myoepitheliomatous, cribriform and mixed salivary type. Currently, the term hidradenoma of the external ear is preferred.
Related Concept Videos
The Cochlea
The Auditory Ossicles
The aptly named stapes look very much like a stirrup. The three ossicles are unique to mammals, and each plays a role in...
Anatomy of the Ear
Auditory Pathway
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking the...
Nose and Nasal Cavity

