4 - Derm - Non-melanoma skin cancers + Benign skin tumours

Question 1

types on non melanoma SC (NMSC)- + pre-malignant lesions

where do they occur

Answer 1

BCC
SCC
-pre mals-
--actinic keratoses AK
--intra-epidermal carcinoma IEC - (bowens)

BCC- basement membrane
SCC AK IEC - stratum spinosum (mid epidermis)

Question 2

NMSC RF’s

Answer 2

UV
fair skin
increasing age
immsuppression
chronic inflam, wounds, scars
HPV (SCC)

genetic - gorlins (BCC), xeroderma pigmentosum

Question 3

Basal cell carcinoma - % of SC’s? ass w usually? symptoms? growth rate? rarely what? is locally what?

Answer 3

80% of skin cancers
UV exposure
slow growing, aSx
rarely metastasise
is locally invasive

Question 4

4 types of BCC

Answer 4

nodular
superficial
morphoeic
pigmented

Question 5

Morphoeic - describe

Answer 5

sclerosing BCC

waxy, skin coloured/scar like

Question 6

Pigmented -describe

Answer 6

brown/grey/blue

may appear like melanoma

Question 7

Superficial - common in? how many? describe? other poss features?

Answer 7

younger people
may be multiple
pink/red scaly, irregular plaques
poss rolled edge, ulceration, telangiectasia

Question 8

Nodular - common where?

describe?

Answer 8

most common on face

small,dome shaped/round, shiny, pinkish./skin col papule/nodule, pearly look (esp if pull skin)

Question 9

Nodular - may have (2) ? other features (2)?

Answer 9

spontaneous bleeding, rolled edge

central ulceration, telangiectasia