LUMPS Flashcards
Firm to soft regular lump (usually round)
sebaceous cysts
Fixed to skin but not to other structures
sebaceous cysts
Move with the skin
sebaceous cysts
Found in hair-bearing skin mainly on scalp—then face, neck, trunk, scrotum
sebaceous cysts
Contains keratinous material
sebaceous cysts
Usually fluctuant
sebaceous cysts
May be a central punctum containing keratin
sebaceous cysts
Tendency to rupture of the cyst wall
sebaceous cysts
Method 1: Incision into cyst
sebaceous cysts
Method 2: Incision over cyst and blunt dissection
sebaceous cysts
Method 3: Standard dissection Incise a small ellipse of skin
sebaceous cysts
Incise the cyst to drain purulent material
sebaceous cysts
Small cystic swelling
Implantation cyst
Usually follows puncture wounds
Implantation cyst
Especially on finger pulp
Implantation cyst
Contains mucus
Implantation cyst
Incision removal (similar to epidermoid cyst
Implantation cyst
A mucous retention cyst.
Mucocele
A benign tumour
Mucocele
Cyst containing mucus
Mucocele
Appears spontaneously, most resolve spontaneously
Mucocele
Common on lips and buccal mucosa
Mucocele
Smooth and round
Yellow or blue colour
Mucocele
not resolve spontaneously may be treated with incision
Mucocele
is simply a lumpy scar
Hypertrophic scar
nodular accumulation of thickened collagen fibres
Hypertrophic scar
does not extend beyond the margins of the wound
Hypertrophic scar
regresses within a year but sometimes can be permanent
Hypertrophic scar
is a special type of hyperplastic scar
Keloid
extends beyond the margins of the wound
Keloid
Firm, raised, red–purple, skin overgrowth
Keloid
Common on ear lobes, chin, neck, shoulder, upper trunk
Keloid
Hereditary predisposition (e.g. dark-skinned person)
Keloid
Follows trauma, even minor (e.g. ear piercing)
Keloid
May be burning or itchy and tender
Keloid
Very common
Seborrhoeic keratosis
There are a variety of subtypes
Seborrhoeic keratosis
Increasing number and pigmentation with age >40 years
Seborrhoeic keratosis
May be solitary but usually multiple
Seborrhoeic keratosis
Common on face and trunk, but occurs anywhere
Seborrhoeic keratosis
Usually asymptomatic
Seborrhoeic keratosis
Usually causes patients some alarm (confused with melanoma)
Seborrhoeic keratosis
Does not undergo malignant change
Seborrhoeic keratosis
Can be removed for cosmetic reasons
Seborrhoeic keratosis
Light cautery to small facial lesions or ablative laser therapy
Seborrhoeic keratosis
Freezing with liquid nitrogen (especially if thin) decolours the tumour
Seborrhoeic keratosis
10% (or stronger) phenol solution applied carefully—repeat in 3 weeks
Seborrhoeic keratosis
Apply trichloroacetic acid to surface: instil gently by multiple pricks with a fine-gauge needle,
Seborrhoeic keratosis
May drop off spontaneously
Seborrhoeic keratosis
If diagnosis uncertain, remove for histopathology
Seborrhoeic keratosis
In Australia, over one million general practice consultations are due to skin cancer
Skin cancer
basal cell carcinoma (BCC) and
squamous cell carcinoma (SCC)—and melanoma.
Skin cancer
The approximate relative incidence is BCC
80%, SCC 15–20% and melanoma less than 5%
Skin cancer
Two out of every three Australians will be
diagnosed with a skin cancer before the age of 70.
Skin cancer
About 70% of skin cancer deaths are due to
melanoma and the rest mainly due to SCC
Skin cancer