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Identifying skin neoplasms benign vs. malignancy - page 4 / 24

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Describing primary lesions

Macula

Flat, non-palpable e.g Mongolian spots

Papule

Superficial, palpable, solid and less than 0.5cm diameter

Plaques

Plateau like elevation above skin surface occupying large surface, e.g psoriasis

Wheal (urticaria)

Round or flat topped, pale red papule or plaque, change in shape, disappear in 24-48hrs

Nodules and tumors

Palpable, solid, round or ellipsoidal and can involve anywhere of skin (epi/dermis and subcutaneous tissue)

Pustules

Circumscribed, superficial cavity that contains a purulent exudate

Vesicles (<0.5cm) and bulla (>0.5cm)

Circumscribed, elevated, superficial cavity containing fluid

Erosions and ulcers

Ulcer is a skin defect, loss of epidermis and upper papillary layer of the dermis

Erosion only involves epidermis

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