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Preauricular sinuses and preauricular cysts are two common congenital malformations. Each involves the external ear. The difference between them is that a cyst does not connect with the skin, but a sinus does. [3] Frequency of preauricular sinus differs depending the population: 0.1–0.9% in the US, 0.9% in the UK, and 4–10% in Asia and ...
Congenital preauricular fistula: A small pit in front of the ear. Also known as an ear pit or preauricular sinus.
Other names. Branchial arch fistula. Benign cervical lymphoepithelial cyst. Pharyngeal arch cyst. Fistulogram (sinogram) of a right branchial cleft sinus. Specialty. Medical genetics. Symptoms. Painless, firm mass lateral to midline, usually anterior to the SCM, which does not move with swallowing.
There is a birth defect of the ear that is visible and relatively common around the world. It is called preauricular sinus which, according to the U.S. National Institutes of Health, or NIH ...
Brain abscess (or cerebral abscess) is an abscess within the brain tissue caused by inflammation and collection of infected material coming from local (ear infection, dental abscess, infection of paranasal sinuses, infection of the mastoid air cells of the temporal bone, epidural abscess) or remote ( lung, heart, kidney etc.) infectious sources.
Pilonidal disease is a type of skin infection which typically occurs as a cyst between the cheeks of the buttocks and often at the upper end. [1] [3] Symptoms may include pain, swelling, and redness. [1] There may also be drainage of fluid, but rarely a fever. [1] [2]
The preauricular deep parotid lymph nodes ( anterior auricular glands or preauricular glands ), from one to three in number, lie immediately in front of the tragus . Their afferents drain multiple surfaces, most of which are lateral in origin.
The mastoid lymph nodes ( retroauricular lymph nodes or posterior auricular glands) are a small group of lymph nodes, usually two in number, located just beneath the ear, on the mastoid insertion of the sternocleidomastoideus muscle, beneath the posterior auricular muscle . Their mastoid lymph nodes receives lymph from the posterior part of the ...
Odontogenic sinusitis is a type of sinusitis (inflammation of the sinuses ), specifically caused by dental infections or procedures. [1] Comprising approximately 10-12% of all chronic sinusitis cases, this condition primarily affects the maxillary sinus, which is in close proximity to the upper teeth. [2]
The persistent duct or sinus can promote oral secretions, which may cause cysts to become infected. Up to half of thyroglossal cysts are not diagnosed until adult life. The tract can lie dormant for years or even decades, until some kind of stimulus leads to cystic dilation. Infection can sometimes cause the transient appearance of a mass or enlargement of the cyst, at times with periodic ...