Also known as: chondrodermatitis nodularis chronica helicis

Clinical Features:

• Painful umbilicated nodule on the helix or antihelix

Histologic Features:

• Hyperplasia and ulceration of the epidermis with fibrin deposition in the base of the ulcer
• Dermal fibrosis, granulation tissue and a mixed inflammatory infiltrate
• Degeneration of the underlying cartilage

External Links:

• Dermnet NZ
• Dermnet NZ - pathology
• Wikipedia

Cases associated with this book:

Chondrodermatitis nodularis chronica helicis
Author: Stephen Lyle, M.D., Ph.D.

Conference: DermatopathologyConsultations.com Teaching Collection