Skin Lesions Quiz Flashcards
pearly nodule growing over 18 months on the face?
BCC
proliferation of basal keratinocytes
expected BCC immediate treatment?
surgical excision
cryotherapy doesn’t work well
radiotherapy only used if not excisable
actinic keratoses treatment?
topical treatment (e.g aldara - immunomodulator, or efudix - cytotoxic) often too large an area for cryotherapy
actinic keratoses?
chronic sun exposed sites
scaly
signs of seborrheic keratosis?
well defined
warty surface (dimpled)
middle aged
stuck on appearence
what do the 3 types of melanocytic naevus look like?
junctional = flat and brown compound = raised and brown intra-dermal = raised and skin coloured
enlarging ulcerating lesion growing over last 10-15 years?
neglected BCC
how is neglected BCC treated
imaging
radiotherapy usually best option if neglected for so long that its really extensive
what does a dysplastic naevus look like?
often just look odd but don’t really change or cause symptoms (pain, itching etc)
bowens disease?
derived from keratinocytes
scaly appearence
most common site of melanoma in females?
leg
bowens disease?
older female legs
history of sun exposure
full thickness dysplasia of keratinocytes in epidermis
bowens treatment?
non-surgical
topical creams
cryotherapy
which symptom is most important in a melanoma?
evolution
what does a blue naevus look like?
dark navy colour, well defined, unchanging mole
long term
how do blue naevi develop?
if melanocytes stop in the dermis while migrating to the basal layer and form a naevus
SCC clues?
elderly patient sun exposed site fast growing (months) lot of keratin in the middle rapid growth not present in viral warts or BCC
nodular component developing in a pigmented patch which has been present for years?
nodule suggests vertical growth phase
melanoma can now metastasise (cant metastasise in RGP)
slow progressing melanoma?
lentigo maligna
very long RGP when then becomes VGP
growth time for BCC?
at least 6 months
telangectasia?
presence of blood vessels
seen in BCC
flat moles which then become raised in a young woman?
normal progression from junctional stage to compound stage
usually happens in young adults
no management or monitoring needed
dermatofibroma?
asymptomatic unchanging very firm nodule can be present for years proliferation of dermal fibroblasts can be red
Basal cell papilloma?
same as seborrheic keratosis
can be black
warty appearence
changing lesion, asymmetrical, jaggy border, >6mm, flat?
melanoma
flat pigmentation above a well defined lesion?
melanoma
at 12 o clock lesion
rolled edge, telangectasia, black, sparing in the middle< pearly?
BCC
haemangioma?
benign overgrowth of blood vessels
lots of red lumps on dermatoscope
looks black/dark and irregular from a distance
