Chondrodermatitis nodularis – low magnification

LEGEND

Frequent solar elastosis

Note that when the biopsy is too superficial, pseudoepitheliomatous hyperplasia may be mistakenly interpreted as squamous cell carcinoma.

  • Pseudoepitheliomatous hyperplasia of the epidermis with focal ulceration and crust formation

  • Cartilage degeneration sometimes associated with transepidermal elimination. Cartilage is rarely visualized in a superficial biopsy.

Chondrodermatitis nodularis – high magnification

LEGEND

  • Presence of granulation tissue, fibrosis with a mixed inflammatory infiltrate