Skin Lesions Quiz Flashcards

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1
Q

pearly nodule growing over 18 months on the face?

A

BCC

proliferation of basal keratinocytes

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2
Q

expected BCC immediate treatment?

A

surgical excision
cryotherapy doesn’t work well
radiotherapy only used if not excisable

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3
Q

actinic keratoses treatment?

A
topical treatment (e.g aldara - immunomodulator, or efudix - cytotoxic)
often too large an area for cryotherapy
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4
Q

actinic keratoses?

A

chronic sun exposed sites

scaly

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5
Q

signs of seborrheic keratosis?

A

well defined
warty surface (dimpled)
middle aged
stuck on appearence

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6
Q

what do the 3 types of melanocytic naevus look like?

A
junctional = flat and brown
compound = raised and brown
intra-dermal = raised and skin coloured
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7
Q

enlarging ulcerating lesion growing over last 10-15 years?

A

neglected BCC

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8
Q

how is neglected BCC treated

A

imaging

radiotherapy usually best option if neglected for so long that its really extensive

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9
Q

what does a dysplastic naevus look like?

A

often just look odd but don’t really change or cause symptoms (pain, itching etc)

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10
Q

bowens disease?

A

derived from keratinocytes

scaly appearence

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11
Q

most common site of melanoma in females?

A

leg

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12
Q

bowens disease?

A

older female legs
history of sun exposure
full thickness dysplasia of keratinocytes in epidermis

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13
Q

bowens treatment?

A

non-surgical
topical creams
cryotherapy

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14
Q

which symptom is most important in a melanoma?

A

evolution

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15
Q

what does a blue naevus look like?

A

dark navy colour, well defined, unchanging mole

long term

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16
Q

how do blue naevi develop?

A

if melanocytes stop in the dermis while migrating to the basal layer and form a naevus

17
Q

SCC clues?

A
elderly patient
sun exposed site
fast growing (months)
lot of keratin in the middle
rapid growth not present in viral warts or BCC
18
Q

nodular component developing in a pigmented patch which has been present for years?

A

nodule suggests vertical growth phase

melanoma can now metastasise (cant metastasise in RGP)

19
Q

slow progressing melanoma?

A

lentigo maligna

very long RGP when then becomes VGP

20
Q

growth time for BCC?

A

at least 6 months

21
Q

telangectasia?

A

presence of blood vessels

seen in BCC

22
Q

flat moles which then become raised in a young woman?

A

normal progression from junctional stage to compound stage
usually happens in young adults
no management or monitoring needed

23
Q

dermatofibroma?

A
asymptomatic
unchanging
very firm nodule
can be present for years
proliferation of dermal fibroblasts
can be red
24
Q

Basal cell papilloma?

A

same as seborrheic keratosis
can be black
warty appearence

25
Q

changing lesion, asymmetrical, jaggy border, >6mm, flat?

A

melanoma

26
Q

flat pigmentation above a well defined lesion?

A

melanoma

at 12 o clock lesion

27
Q

rolled edge, telangectasia, black, sparing in the middle< pearly?

A

BCC

28
Q

haemangioma?

A

benign overgrowth of blood vessels
lots of red lumps on dermatoscope
looks black/dark and irregular from a distance