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| *Abbreviated ''CNCH''. | | *Abbreviated ''CNCH''. |
| *[[AKA]] ''Winkler disease''.<ref>URL: [http://www.head-face-med.com/content/4/1/2 http://www.head-face-med.com/content/4/1/2]. Accessed on: 16 January 2014.</ref> | | *[[AKA]] ''Winkler disease''.<ref>URL: [http://www.head-face-med.com/content/4/1/2 http://www.head-face-med.com/content/4/1/2]. Accessed on: 16 January 2014.</ref> |
| ===General===
| | {{Main|Chondrodermatitis nodularis chronica helicis}} |
| *Tender/painful - '''key clinical feature'''.
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| *Typically right [[ear]] - people more often sleep on this one.<ref name=pmid17879469>{{Cite journal | last1 = Devani | first1 = A. | last2 = Barankin | first2 = B. | title = Dermacase. Chondrodermatitis nodularis chronica helicis. | journal = Can Fam Physician | volume = 53 | issue = 5 | pages = 821, 837 | month = May | year = 2007 | doi = | PMID = 17879469 }}</ref>
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| *Usually >40 years old.
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| Etiology:
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| *Trauma/mechanical.
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| ===Gross===
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| *[[Papule]] on ear.
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| *+/-Erythematous.
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| *+/-Crust.
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| Clinical DDx:<ref name=pmid17879469/>
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| *[[BCC]].
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| *[[SCC]].
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| Images:
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| *[http://commons.wikimedia.org/wiki/File:Chondrodermatitis.jpg CNCH (WC)].
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| *[http://www.dermnetnz.org/lesions/chondrodermatitis.html CNCH (dermnetnz.org)].
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| ===Microscopic===
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| Features:<ref name=pmid17879469/>
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| *Dermal inflammation.
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| *Epithelial hyperlasia.
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| *Fibrosis.
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| *Cartilaginous pathology:
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| **Perichondrial inflammation - '''key feature'''.
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| **Perichondrial disruption.
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| **+/-Necrosis.
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| **+/-Hemorrhage.
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| Images:
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| *[http://www.dermpedia.org/case/chondrodermatitis-nodularis-chronica-helicis CNCH (dermpedia.org)].
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| *[http://www.surgicalpathologyatlas.com/glfusion/mediagallery/media.php?s=20080802171837514 CNCH (surgicalpathologyatlas.com)].
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| *[http://dermatlas.med.jhmi.edu/derm/indexDisplay.cfm?ImageID=2140701395 CNCH (dermatlas.med.jhmi.edu)].
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| ===Sign out===
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| ====Superficial biopsy====
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| <pre>
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| SKIN LESION, LEFT ANTIHELIX OF EAR, BIOPSY:
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| - SUPERFICIAL SKIN WITH ACANTHOSIS, HYPERKERATOSIS, MODERATE SOLAR ELASTOSIS,
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| HYPERGRANULOSIS AND A MILD LYMPHOCYTIC PERIVASCULAR INFILTRATE.
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| - NO CARTILAGE IS IDENTIFIED.
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| - NEGATIVE FOR DYSPLASIA AND MALIGNANCY.
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| COMMENT:
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| The findings are non-specific. Chondrodermatitis cannot be excluded.
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| </pre>
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| ==Cutaneous calcinosis== | | ==Cutaneous calcinosis== |