Skin Cancer Flashcards
what type of sun burn causes the biggest risk of skin cancer?
blistering burns
esp during childhood
describe BCC?
telangectasia
can have rolled edge
pearlescent
locally invasive but doesnt tend to spread distantly
sub-types of BCC?
nodular (raised but well defined)
superficial (flat and well defined)
infiltrative (less well defined)
how is each sub-type of BCC managed?
nodular = surgical excision superficial = topical cream or cryotherapy or photodynamic therapy infiltrative = mohs surgery
what topical creams can be used in superficial BCC?
5-FU
imiquimod
what is Mohs surgery?
surgical excision of cancer with small margin, then look at sample under microscope to check youve got all the cancer call (can go back and take more if needed)
how might superficial BCCs appear?
red
irregular
can have some crusting and pinpoint bleeding
what is actinic keratosis?
partial thickness dysplasia of keratinocytes
what is bowens disease?
full thickness dysplasia of keratinocytes
what is SCC?
full thickness dysplasia of keratinocytes + invasion of basement membrane
how is actinic keratosis managed?
topical creams
photodynamic therapy
cryotherapy (good for solitary lesion)
what does the term field exposure mean?
large area of skin all dysplastic from sun exposure
can be a mixture of SCC, actinic keratoses etc
how is field exposure managed?
surgical excision of SCCs
topical therapy for actinic keratoses
how is bowens disease managed?
topical therapy
where are SCCs likely to occur in smokers?
lips
SCCs in which areas are most likely to metastasise?
ears and lips