Benign Tumours of the Skin Flashcards
Seborrhoeic Keratoses
aka Senile warts Found in middle-aged and elderly people Asymptomatic Often multiple Common on face and trunk Warty greasy papules, well-define borders, colour varies, 'stuck on' appearance Usually no treatment
Leser-trelat
Sudden eruption of multiple seborrhoeic keratoses, sign of underlying internal malignancy
Lipoma
Very common Middle-aged people Solitary more in women Multiple in men Asymptomatic Caused by adipose tissue proliferation Slow growing (years), soft, smooth, mobile, subcutaneous nodule, 2-10 cm diameter Usually no treatment Complication = liposarcoma
Epidermoid Cysts
aka follicular infundibular cyst , keratin cyst
Usually occur in adults M:F 2:1
Solitary or multiple
Common sites are the face, neck and trunk
Asymptomatic
Caused by epidermal cell proliferation
Skin-coloured/yellow, firm, round nodules, may have a central punctum and offensive smelling keratinous contents
Usually no treatment
Dermatofibromas
aka histocytomas
Affects all ages F>M
Common on legs, after an insect bite, eruptions of dermatofibromas can occur in immunosuppressed people
Itchy or painful
Caused by fibroblast proliferation
Firm, fibrous, dermal nodules or papules, usually <1cm diameter, skin dimples upon compression
Usually no treatment
Campbell de Morgan Spots
aka cherry angiomas Number of spots increases with age Common on midtrunk Caused by endothelial cell proliferation and subsequent blood vessel overgroth Red, purple, black papules or macules Usually no treatment
Fibroepithelial Polyps
aka skin tags Common Develop with age Common on skin fold e.g. armpits Usually skin coloured Can be removed