plaque
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Introduction
A small differentiated area on a body surface (skin, mucosa, endothelium) or on a cut surface of an organ (brain).
Also see:
In dermatology:
- a macroscopic term referring to an elevated, generally flat-topped area >= 1 cm across
- plaques are generally formed from confluent papules
Classification
- red, scaling plaques
- yellow plaques: xanthomas
- brown plaques: seborrheic warts
- lichenified plaques: atopic dermatitis
- keratotic plaques: plantar warts
- plaque with scale or roughed surface
- other
- acanthosis nigricans
- cellulitis
- contact dermatitis
- diaper dermatitis
- eczematous dermatitis
- erythrasma
- granuloma annulare
- ichthyosis
- lichen planus
- lichen sclerosus
- Lyme disease
- cutaneous T-cell lymphoma
- morphea
- myxedema (Graves disease)
- necrobiosis lipoidica diabeticorum
- Paget's disease
- sarcoidosis
- seborrheic dermatitis
- Sweet's syndrome
- syphilis
- vasculitis
- Vexas syndrome (erythematous, edematous annular (oval) plaques)
- xanthelasma
More general terms
More specific terms
Additional terms
- amyloid (senile, neuritic) plaque
- atheroma (atherosclerotic plaque)
- dental (bacterial) plaque (tartar)
- papules, nodules & plaques by color
References
- ↑ Cotran et al Robbins Pathologic Basis of Disease, 5th ed. W.B. Saunders Co, Philadelphia, PA 1994 pg 1174
- ↑ DeGowin & DeGowin's Diagnostic Examination, 6th edition, RL DeGowin (ed), McGraw Hill, NY 1994, pg 54
- ↑ Medical Knowledge Self Assessment Program (MKSAP) 11, 15, 18 American College of Physicians, Philadelphia 1998, 2009, 2018
- ↑ UpToDate 14.1 http://www.utdol.com