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Pseudocyst of the auricle, also known as auricular pseudocyst, endochondral pseudocyst, cystic chondromalacia, intracartilaginous auricular seroma cyst, and benign idiopathic cystic chondromalacia, [1] is a cutaneous condition characterized by a fluctuant, tense, noninflammatory swelling on the upper half of the ear, known as the auricle or pinna.
Preauricular sinuses and cysts result from developmental defects of the first and second pharyngeal arches. [10] This and other ear malformations are sometimes associated with renal anomalies. [ 11 ] In rare circumstances these pits may be seen in genetic conditions such as branchio-oto-renal syndrome ; however these conditions are always ...
Scan of Figure 2, from Darwin's Descent of Man, second edition, illustrating Darwin's tubercle. This atavistic feature is so called because its description was first published by Charles Darwin in the opening pages of The Descent of Man, and Selection in Relation to Sex, as evidence of a vestigial feature indicating common ancestry among primates which have pointy ears.
A cauliflower ear deformity. Inflammation of the cartilage of the ear is a specific symptom of the disease and affects most people. [3] It is present in about 20% of persons with RP at presentation and in 90% at some point. [3] Both ears are often affected but the inflammation may alternate between either ear during a relapse. [3]
A dermoid cyst is a teratoma of a cystic nature that contains an array of developmentally mature, solid tissues. It frequently consists of skin, hair follicles, and sweat glands, while other commonly found components include clumps of long hair, pockets of sebum, blood, fat, bone, nail, teeth, eyes, cartilage, and thyroid tissue.
First branchial cleft cysts - These are also known as periauricular because of their position near the ear. They are always in or adjacent to the parotid gland. These account for 8% of the sinuses and cysts of the neck. They are lateral to the facial nerve and run parallel to the external auditory canal. [9]
Cauliflower ear is an irreversible condition that occurs when the external portion of the ear is hit and develops a blood clot or other collection of fluid under the perichondrium. This separates the cartilage from the overlying perichondrium that supplies its nutrients, causing it to die and resulting in the formation of fibrous tissue in the ...
Auricular sulcus is the depression behind the ear next to the head; Concha is the hollow next to the ear canal; Conchal angle is the angle that the back of the concha makes with the side of the head; Crus of the helix is just above the tragus; Cymba conchae is the narrowest end of the concha; External auditory meatus is the ear canal