Derm Flashcards

1
Q

DDX for palisaded granulomatous dermatitis

A
  1. granuloma annulare
  2. necrobiosis lipoidica diabeticorum
  3. rheumatoid nodule
  4. epithelioid sarcoma
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2
Q

Calciphylaxis

A

Renal failure, purpuric patches, calcification of vessels in subcutis with associated fat necrosis

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3
Q

Psoriasiform dermatitis

A
  • parakeratosis
  • elongation of rete ridges
  • thinning of dermal papillae (why they bleed clinically-Auspitz sign)
  • often PMNs (Munro’s microabscesses)
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4
Q

Infantile myofibroma

A

Nodule on lower extremity of baby, myxoid nodules with HPC-like areas

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