Dermatology_Medicine Flashcards
Melanoma - criteria for 2WW?
- Asymmetry
- Border (irreg)
- Colour
- Diameter (>7mm)
- Exposed area/evolving/elevated
Melanoma Ix? Mx? What does nodal involvement indicate?
Ix: excision biopsy with Breslow thickness
Nodal involvement = stage 3+
Mx:
- Suspicion of nodal involvement/mets –> excision biopsy + SLNB ± mets screening
- No nodal involv/mets –> excision biopsy:
- Breslow ≤2mm = stage 1
- Breslow ≥2mm –> SLNB:
- -ve = stage 2
- +ve = mets screen:
- -ve = stage 3
- +ve = stage 4
- Stage 1/2 –> follow-up & advice
- Stage 3 –> LND + adjuvant chemo
- Stage 4 –> resect (if possible), chemo, metastasectomy, palliative input
Multiple flat, light brown plaques with waxy surface along scalp + back - Dx?
Seborrhoeic keratosis
Multiple scaly, thick plaques on sun-exposed regions - Dx?
Acitinic/Solar keratosis (pre-malignant)
Hard, raised growth with an ulcerated centre that began as boil - Dx?
Keratoacanthoma
Red swollen leg DDx?
Cellulitis/Erysipelas
Venous thrombosis (DVT)
Chronic venous insufficiency
Purpuric erruption DDx?
Meningococcal septicaemia
DIC
Vasculitis
Acitinic purpura
Changing pigmented lesion ddx?
Melanocytic naevi
Seborrhoeic wart
Malignant melanoma
Itchy eruption DDx?
Eczema - atopy/exacerbating factors
Scabies - contacts with Hx
Urticaria - precipitant
Lichen planus - FHx/drug-induced
general Mx: antihistamines, CS
Acne vulgaris - drug Tx?
- Single topical therapy: topical retinoid or benzoyl peroxide
- Topical combination therapy (choose 2 or more): topical retinoid, benzoyl peroxide, topical antibiotic
- Add oral antibiotics: tetracycline, macrolide, trimethoprim
- (Sometimes COCP as alternative in women)
- Oral isotretinoin