skin cancer overview Flashcards
what are the 2 main types of non-melanoma cancers?
basal cell carcinoma
squamous cell carcinoma
what is more serious BCC or SCC?
SCC
what do BCCs arise from?
kertainocytes in basal layer
what do SCCs arise from?
suprabasal layers
translucent slow growing lump or non healing ulcer
painless
invade locally and dont spread
BCC
wart or crusted growth or non healing ulcer
usually arise on sun damaged skin and tend to grow fast
maybe painful
can spread around body
SCC
what is the ABCDE rule in diagnosing melanoma?
Asymmetry Border Colour Diameter Evolution
ugly duckling sign
melanoma
pearly or translucent appearance
visible aborising blood vessles
central ulceration- “rodent ulcer”
can be pigmented
BCC
what are actinic keratoses
precancerous skin lesions
risk of getting BCC or SCC
what cancer can arise with Bowens disease?
SSC
erythematous plaque. SCC can arise inside
usually on legs
Bowens disease
risk factors for skin cancer?
sun exposure-blue eyes, blond/ ginger
genetic predisposition
immunosuppressionj
HPV infection
other environmental carcinogens
sun burn as child!!!!!
what are the different skin types?
- always burns, never tans
- usually burns, can tan
- can burn, usually tans
- always tans, never burns
- brown skin
- black skin
is HPV skin cancer?
yes