Mechanism Cleaning of the Ear Canal

Mass in the ear canal.

The shape of the ear canal

It is proved that the measurement of the acoustic pressure on the ear membrane allows one to determine the shape of the ear canal uniquely. © 2006 Elsevier B.V. All rights reserved. PACS: 02.30.Jr; 03.40.Kf

Management of ear-canal collapse.

Thresholds were measured at 250, 500, 1,000, 2,000, 3,000, 4,000, 6,000, and 8,000 Hz in 20 normal adult ears and in ten ears from adults with varying amounts of ear-canal collapse. To alleviate the attenuation caused by ear-canal collapse, ear-canal inserts, postauricular pads, or circumaural cushions (Telephonics 510-020) were used with earphones (TDH-49). The circumaural cushions provided th...

Ewing Sarcoma of the External Ear Canal

Background. Ewing sarcoma (ES) is a high-grade malignant tumor that has skeletal and extraskeletal forms and consists of small round cells. In the head and neck region, reported localization of extraskeletal ES includes the larynx, thyroid gland, submandibular gland, nasal fossa, pharynx, skin, and parotid gland, but not the external ear canal. Methods. We present the unique case of a 2-year-ol...

Ceruminous Gland Adenocarcinoma of External Ear Canal

Ceruminomas are rare tumors arising from the ceruminous gland, which is a modified apocrine gland in the skin of the external ear canal. There is controversy about these rare tumors regarding their histological classification, their origin and the importance of wide excision, and there is also terminological confusion for making the diagnosis. Ceruminous adenocarcinoma is a malignant subtype of...