2) Possible origins of adenocarcinomas of the external auditory meatus in people include ceruminous
or sebaceous glands, direct invasion from the parotid gland, or distant metastasis from other glandular tissues.
The findings included purulent (4 ears) and ceruminous
(3 ears) secretions in external ear canal that were not abundant grossly, ulceration of external ear canal in 3 ears and excessive hair in external ear canal (4 ears).
Other primary histological types of neoplasms arising in this area include adenocarcinoma, adenoid cystic carcinoma, mucoepidermoid carcinoma, basal cell carcinoma, ceruminous
carcinoma, and rhabdomyosarcoma.
glands are modified apocrine glands of the external auditory meatus; they rarely give rise to malignant change.
Comparison of 4 fixation and staining methods for the cytologic evaluation of ear canals with clinical evidence of ceruminous
At this time, the tumor was diagnosed as a primary adenoid cystic carcinoma of the ceruminous
is the secretion of the ceruminous
glands in the skin of the outer ear canal.
3-6) Cerumen is a mixture of dead epithelial cells and hair combined with secretions of the sebaceous and ceruminous
(apocrine) glands in the outer two-thirds of the external auditory canal (EAC).
The affected dogs were typically presented with swelling and erythema of epithelial tissue of ear canal, increased discharge from ceruminous
glands head shaking and behaviour suggesting of otic pain and pruritus (Gottlehf, 2000).
adenomas are rare benign glandular tumor of external auditory canal of ceruminous
adenoma, also called ceruminoma, ceruminal adenorna, apocrine adenoma, or even cylindroma in the past (the latter three terms are discouraged) is a benign glandular neoplasm of ceruminous
glands (modified apocrine sweat glands) that arises solely from the external auditory canal.
Distribution of sebaceous and ceruminous
glandular tissue was similar to that in normal ears in case of otitis externa, but glands become larger and hyperplastic.