non-melanoma skin cancers Flashcards
1
Q
BCC - features
A
slow growth + local invasion mets v rare nodular most common sun exposed skin pearly, flesh-coloured papule w telangiectasia → ulceration → central crater
2
Q
BCC - management
A
surgical removal
other options: curettage cryotherapy topical imiquimod, fluorouracil radio
3
Q
BCC + SCC RFs
A
chronic UV exposure skin type 1 and 2 chemicals immunosuppression BCC - hx SCC SCC - smoking, actinic keratoses
4
Q
evidence of metastases on skin examination?
A
draining lymph nodes
hepatomegaly
5
Q
writing referral to derm - things to include
A
ABCDE site, size, features of lesion onset of lesion painful? growth? skin type immunosuppression hx sun exposure/occupation FH
6
Q
SCC - features
A
painful quick growth - wks-months hard + nodular crusted + hyperkeratotic surface ± ulcerated commonly on face, scalp, back of hands
7
Q
poor prognostic factors for SCC
A
>2cm on lip / ear immunosuppression poor differentiation invasion > 4mm perineural invasion
8
Q
UV protection lifestyle advice
A
stay in shade 11-3
never burn
wear hat in sun
9
Q
BCC - background
A
slow growing
rarely metastasise
nodular - commonest type
10
Q
what determines prognosis of SCC?
A
depth of invasion of skin on histology
11
Q
what makes a BCC high risk?
A
lesions on eyelid margin, ear or lip
perineural invasion on histology
recurrent lesion
immunosuppression
12
Q
SCC - management
A
<2cm - excision with 4mm margins
>2cm - excision with 6mm margins
high-risk patient / cosmetically important site - Mohs micrographic surgery
