Case Number : Case 2614 - 14 July 2020 Posted By: Uma Sundram

There doesn't seem to be any evidence of a tumour so this must be chondrodermatitis nodularis.  It is quite common for there to be a small dimpled erosion overlying the lesion, but here the cartilage is protruding completely through a break in the epidermis, unless this is a processing artefact.

CDNH

Agree CDNH

For some reason in women, these lesions are just as common, if not more common on the ante-helix rather than the helix of the ear.  I think it is more accurate just to call it chondrodermatitis nodularis unless the anatomical site has been specified on the request form.

Agree. 

Chondrodermatitis nodularis helicis. 

I use "chondrodermatitis" only but a shorter snappier name would be better! I've started using acronyms in my reports. For example I simple use BCC now when the clinician uses the term in the clinical) so "CDNH" would be acceptable if the clinician had used the term in the clinical information.