Skin cancer

Question 1

name the 2 types of non-melenoma skin cancer

-and origins

Answer 1

Squamous Cell Carcinoma
-arise from keratinocytes in supra-basal layers
Basal Cell Carcinoma
-arise from keratinocytes in the basal layer of the epidermis

Question 2

Describe the presentation of BCC

• appearance (7)
• character
• area of presentation

Answer 2

-translucent pearly lump (slow growing) OR unhealed ulcer
Painless + barbarising blood vessels with central ulceration (rodent ulcer)
scaly plaque or infiltrative

• locally invasive but rarely mets
• often present on face

Question 3

Describe Presentation of SCC

• appearance
• character
• area of presentation
• precursor lesions

Answer 3

-hyperkeratotic lump or ulcer on sun damaged skin
fast growing painful and bloody

• low risk of mets but poor prognosis
• lip, scalp, ear
• aktinic kerratosis, Bowen’s disease, Keratoacanthoma