Dermatology_Medicine Flashcards

1
Q

Melanoma - criteria for 2WW?

A
  • Asymmetry
  • Border (irreg)
  • Colour
  • Diameter (>7mm)
  • Exposed area/evolving/elevated
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2
Q

Melanoma Ix? Mx? What does nodal involvement indicate?

A

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
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3
Q

Multiple flat, light brown plaques with waxy surface along scalp + back - Dx?

A

Seborrhoeic keratosis

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4
Q

Multiple scaly, thick plaques on sun-exposed regions - Dx?

A

Acitinic/Solar keratosis (pre-malignant)

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5
Q

Hard, raised growth with an ulcerated centre that began as boil - Dx?

A

Keratoacanthoma

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6
Q

Red swollen leg DDx?

A

Cellulitis/Erysipelas

Venous thrombosis (DVT)

Chronic venous insufficiency

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7
Q

Purpuric erruption DDx?

A

Meningococcal septicaemia

DIC

Vasculitis

Acitinic purpura

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8
Q

Changing pigmented lesion ddx?

A

Melanocytic naevi

Seborrhoeic wart

Malignant melanoma

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9
Q

Itchy eruption DDx?

A

Eczema - atopy/exacerbating factors

Scabies - contacts with Hx

Urticaria - precipitant

Lichen planus - FHx/drug-induced

general Mx: antihistamines, CS

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10
Q

Acne vulgaris - drug Tx?

A
  • 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
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