4 - Derm - Non-melanoma skin cancers + Benign skin tumours - Benign lesions Flashcards
8 types of benign lesions
dermatofibroma neurofibroma epidermoid cyst pilar cyst keratoacanthoma seborrhoeic keratosis viral wart hemangiomas
3 types of hemangiomas
cherry angioma, pyogenic granuloma, strawberry naevus
dermatofibroma - appearance and texture, squuezed?
firm, elevated, pigmented nodule, if squeezed forms dimple - tethering to underlying tissue
dermatofibroma - more common in? maybe following? mgmt?
females>males
follow trauma, insect bite
excision if Sx/cosmetic
neurofibroma - occurs in what? appearance? mgmt?
in neurofibromatosis type 1
small button like nodules - maybe widespread
if large/painful - excision
neurofibroma - describe NF1
inherited
- neurofibromas
- cafe au lait
- freckles under armpits groin
- lisch nodules
Epidermoid cyst - why occur? appearance? where?
entry of epidermis into the dermis
cystic swelling, central punctum
face, neck, trunk
epidermoid cyst - contains? what may happen? mgmt?
‘cheesy’ keratin
may rupture causing inflam
may be excised
Pilar cyst - appearance? less prone to?
smooth cyst, no punctum, usually on scalp
less prone to rupture
keratoacanthoma - growth? may develop what? describe core?
rapidly growing
may have central necrosis and ulceration
solid filled with keratin
keratoacanthoma - occur where? mgmt?
sun exposed skin
should be excised to exclude SCC
seborrheic keratosis - appearance and texture? what is it?
brown/black/flesh-coloured, stuck on appearance, irregular surface and warty
benign overgrowth of basal cell layer
seborrheic keratosis - how many? treatment?
solitary/multiple
tx with cryo/curettage
Viral wart - caused by?
difference between common and plantar?
HPV
common - papules - hands and feet
plantar - verrucae - soles of feet
viral wart mgmt?
chemical Tx
cryotherapy
curettage and cautery
