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MSK > Dermatology - Benign + malignant tumours > Flashcards

Dermatology - Benign + malignant tumours Flashcards

1
Q
A

Solar keratoses

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2
Q

Likelihood of solar keratoses developing to SCC?

A

Pretty much only slightly higher than normal skin!

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3
Q
A

Solar keratoses

Do have dysplastic changes

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4
Q
A

Solar keratoses which has been treated with field treatment (imiquimod/5-flurouracil) - unsightly + uncomfy for a few weeks

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5
Q
A

Bowen’s disease

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6
Q
A

Seborrheic keratosis

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7
Q

‘Stuck on’ brown with granular/wart-like surface

A

Seborrheic keratoses

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8
Q
A

BCC

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9
Q
A

BCC

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10
Q
A

BCC

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11
Q
A

BCC

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12
Q
A

Bleeding/ulcerated BCC

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13
Q
A

BCC - large

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14
Q
A

Lots of BCC

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15
Q

How to treat flat BCC?

A

Field treatment (imiquimod or 5-fluorouracil cream)

OR photodynamic therapy

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16
Q
A

Amelanotic melanoma

Very similar appearance to BCC and metastasis

17
Q

How to differentiate solar keratosis or Bowen’s

A

SK - small, ill-defined, sun exposed site
Bowens: >10mm, well circumscribed

18
Q
A

Pearly edge - BCC

19
Q
A

Smooth red plaque, some erosion in old man - BCC

20
Q
A

Chondrodermatitis

Benign

21
Q
A

Epidermoid cyst (cheesy filling). Benign.

22
Q
A

Dermatofibroma

FIRM feel, flat or slightly raised

Can look like a lot of things but firmness is key

23
Q
A

Raised mole. Same texture (not shiny or rough).

24
Q
A

Nodular BCC - skin coloured but shiny, translucent lesions

May have telangiectasia
Slow growing + do not metastasize

25
Q
A

SCC - dull rough surface

not shiny + no telangiectasia

26
Q
A

Keratoacanthoma

Skin coloured papula, central keratin plug which grows.

27
Q
A

Keratocanthoma

Completely full of keratin plug

28
Q

What are lentigines?

A

Common benign brown spots ‘sun spots’

29
Q
A

Dark lentigo on the lip

30
Q

Risk fx for melanoma

A

UV exposure
Total number of moles
Family hx of melanoma or other skin cancer
Red hair/blue eyes

31
Q

Features of melanoma

A

Odd duckling mole
Strange shape
Multicoloured >3 colours
Black
Change, bleeding

32
Q
A

Melanoma

33
Q
A

Melanoma

34
Q

Diff dx for dark lesions

A

Naevi, BCC, Melanoma, dermatofibromas

MSK (7 decks)

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