Squamous Cell Carcinoma Flashcards
1
Q
Types of SCC
A
Superficial - Grows quickly - Tender and bleeds easily Keratoacanthoma - has a central keratin plug Bowen's Disease - slowly expanding red scaly plaque on the bdy
2
Q
What is the follow up period after SCC excision?
A
3-6monthly for the first two years
3
Q
What’s the surgical margin?
A
3-5mm
4
Q
Risk factors for bowen’s disease?
A
Sun exposure HPV Ionising radiation Arsenic immune suppression
(ref dermnet nz)
5
Q
Ddx for a scaly plaque?
A
SCC - s/ficial
BCC - s/ficial
Amelanocytic melanoma
Solar keratosis
Psoriasis
Eczema
Ulcer
Infection
6
Q
What proportion of skin cancer does SCC contribute?
BCC?
A
- SCC = 1/3rd
BCC = 2/3rd
3% melanoma
1% rare skin tumour
