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Gouty Tophus
Gouty tophi are the result of the subcutaneous accumulation of deposits of monosodium urate crystals. These tophi present as painful, skin coloured nodules occurring most frequency on the helix. Tophi...
![Chondrodermatis Nodularis Helicus Chronica [Winkler's Nodule]](https://medtube.net/images/min/9e07572f9dcd5cd00406d1f235d398ed/149/112/1 "Chondrodermatis Nodularis Helicus Chronica [Winkler's Nodule]")
Chondrodermatis Nodularis Helicus Chronica [Winkler's...
Chondrodermatis Nodularis Helicus Chronica is the formal name given to a discrete, firm, raised and frequently painful nodule located on the pinna. This nodule is most commonly located on the apex of...
Herpes Zoster Of The Pinna
Over time, the pustules rupture, dry out and become crusted. When herpes zoster involves the sensory portion of the geniculate ganglion of the facial nerve, it may produce a lower motor neuron facial...
Acute Erysipelas
Erysipelas is an acute localized but superficial spreading cellulitis usually caused by group A beta hemolytic streptococci and characterized by involvement of the lymphatics. The cutaneous lesions are...
Idiopathic Cystic Chondromalacia of the Pinna
Idiopathic Cystic Chondromalacia is a cystic degeneration of the auricular cartilage of unknown origin, which may be mistaken both clinically and histologically for relapsing polychondritis. Clinically,...
Psoriasis of the External Ear Canal
Psoriatic dermatitis may extend into the external auditory canal. In this case, the superficial external auditory canal shows a collection of white, silvery, scaly debris.
Psoriasis Pinna
Note the sharply demarcated salmon coloured plaques of psoriasis just below the helical rim. The upper portion of the lesion is covered with the characteristic silvery scales.
Psoriasis
Psoriasis vulgaris is a hereditary disorder of skin characterized by an increased rate of epidermal cell replication.
Accessory Auricle
A preauricular appendage that contains a cartilaginous core is called an "accessory auricle". Accessory auricles represent a small ectopic remnant of one of the embryological hillocks.
Preauricular Pit
Preauricular pits are relatively shallow pits that result either from a failure in the fusion of the primitive ear hillocks or from the defective closure of the first brachial cleft. Preauricular pits...
![Infected Preauricular Sinus [left]](https://medtube.net/images/min/b2a376c3b648e197301f2029f597aaea/149/112/1 "Infected Preauricular Sinus [left]")
Infected Preauricular Sinus [left]
A preauricular sinus is deeper than a preauricular pit. The sinus tract is lined with a stratified squamous epithelium. The tract of a preauricular sinus may become chronically infected and emit a painless,...
Preauricular Cyst
If the external opening of the tract of the preauricular sinus becomes closed, the epithelium lining the tract will continue to shed epithelial squames into the tract thereby producing a preauricular...
Creased Lobule
In some patients with increasing age and oblique crease may appear in the lobule. This is known as a "creased lobule" and appears to indicate a significant predisposition to obstructive coronary...
Traumatic Seroma of the Pinna
That trauma from friction may irritate the perichondrium and produce a subperichondial serous or serosanguinous seroma. A seroma will usually persist for several days after the original injury.
Aspirate from Traumatic Seroma of the Pinna
When a seroma fails to resolve spontaneously, aspiration of the subperichondrial blood tinged serous transudate may be necessary.
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Michael Hawke
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Gottumukkala Raju
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Ashley Mark
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Gastroenterology Atlas
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SAGES - Society of American Gastrointestinal and Endoscopic Surgeons
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High Impact - Medical Animation
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Orthopaedic Academy
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World Health Summit
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