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7 Cards in this Set
- Front
- Back
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Psoriasiform epidermal hyperplasia: characteristics
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- Regular elongation of rete ridges
- Thickening (clubbing) of their lower portions - Parakeratosis - Collections of neutrophils - Papillary edema - Tortuous capillaries (accounts for Ausptiz sign) |
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Psoriasis vulgaris: histopath
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- Psoriasiform hyperplasia
- Regular elongation of rete ridges - Clubbing - Confluent parakeratosis - Hypogranulosis - Collection of neutrophils (Munro, Kogoj) |
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What diseases exhibit psoriasiform dermatitis?
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- Psoriasis and variants
- Reiter's syndrome (type of seronegative spondyloarthropathy, can't climb a tree, see, pee) - Lichen simplex chronicus - Mycosis fungoides - Pityriasis rosea |
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Lichen planus: histopath
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- hyperkeratosis
- Hypergranulosis (wedge-shaped) - Irregular hyperplasia (saw-tooth pattern) - Band of mononuclear infiltrate obscuring the DE junction. - Vacuolization of the basal layer - See IgM positive pink, dead leukocytes - apoptotic keratinocytes |
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What diseases can exhibit spongiosis?
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- Allergic contact dermatitis
- Arthropod bites - Atopic dermatitis - Dermatophytoses - Drug reactions |
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Spongiosis: histopath
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- Vesicles
- Dermal edema - Eosinophils |
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Urticaria and angioedema: histopath
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- Epidermis is usually unremarkable
- Sparse superficial perivascular mixed lymphocytic and eosinophilic infiltrate - Mild telangiectasia and dermal edema |
