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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.
It is called preauricular sinus which, according to the U.S. National Institutes of Health, or NIH, "generally appears as a tiny skin-lined hole or pit, often just in front of the upper ear where ...
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]
The cyst wall is composed of squamous epithelium (90%), columnar cells with or without cilia, or a mixture of both, with lymphoid infiltrate, often with prominent germinal centers and few subcapsular lymph sinuses. The cyst is typically surrounded by lymphoid tissue that has attenuated or absent overlying epithelium due to inflammatory changes.
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cyst [7] skin tag [7] sunburn, frostbite [6] pressure ulcer, often from a poorly fitting hearing aid [6] anotia, absent pinna [7] microtia, underdeveloped pinna [7] cryptotia, a pinna covered beneath the skin of the scalp [5] Stahl's deformity, pointed pinna due to an extra fold of cartilage [5] cupped or constricted ear deformity, a hooded ...