Squamous Cell Carcinoma
Indurated erythematous nodule or plaque with a hyperkeratotic surface, scale/crust, and central ulceration.
Malignant Melanoma
A pigmented lesion with asymmetry, an irregular border, variegated colour, and diameter greater than 6 mm.
Basal Cell Carcinoma No. 3
Note central ulceration. (Courtesy Dr. S. Walsh)
Basal Cell Carcinoma No. 2
Skin-coloured papule or plaque with rolled, translucent/pearly border and telangiectasia.
Basal Cell Carcinoma No. 1
Skin-coloured papule or plaque with rolled, translucent/pearly border and telangiectasia.
Heritable Disorders
Vitiligo
Sharply marginated, white patches completely devoid of pigment due to an acquired loss of melanocytes.
Erythema Nodosum
Tender, poorly demarcated, deep-seated nodules usually on lower extremities. (Courtesy Dr. M. Mian)
Urticaria
Circumscribed, raised, edematous, red plaques surrounded by faint white halo. (Courtesy Dr. S. Walsh)
Toxic Epidermal Necrolysis – TEN
Widespread necrosis with painful blistering and denuding of epidermis.
Erythema Multiforme EM No.2
The macules and papules can have various appearances but tend to be monomorphic in a given patient. (Courtesy Dr. S. Walsh)
