Painful nodule of the ear in
a 65 year old male. There is history of exposure to sunlight. Patient has
been continuously using headphones for many years.
- Low power view: There ulceration, granulation tissue, fibrinoid necrosis
and degerative changes of the underlying cartilage.
Further section of the
area (see Image 1)
showing collagen degeneration, prominent fibrinoid change and granulation
tissue formation. The underlying perichondrium is showing thickening and
3 - There is acanthosis and pseudoepitheliomatous
hyperplasia of the overlying epithelium. The vascularized
granulation tissue is present below the epithelium.
- High power view showing dense inflammation,
collagen degeneration and thickened perichondrium.
- Further high power
view showing heavy infiltrate of histiocytes, lymphocytes and some