skin lesions

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PRIMARY SKIN LESIONS Macule Papule Patch Plaque Wheal Nodule Tumor Vesicle Bulla Pustule Cyst Telangiectasia

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For a Pathology class

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Page 1: skin lesions

PRIMARY SKIN LESIONS• Macule• Papule• Patch• Plaque• Wheal• Nodule• Tumor• Vesicle• Bulla• Pustule• Cyst

• Telangiectasia

Page 2: skin lesions

Macule. A small, circular, flat spot less than 0.4 in (1 cm) in diameter. The color of a macule is not the same as that of nearby skin. Macules come in a variety of shapes and are usually brown, white, or red. Examples of macules include freckles and flat moles.

Papule. A solid, raised lesion less than 0.4 in (1 cm) across. A patch of closely grouped papules more than0.4 in (1 cm) across is called a plaque. Papules and plaques can be rough in texture and red, pink, or brown in color. Papules are associated with such conditions as warts, syphilis, psoriasis, seborrheic and actinic keratoses, lichen planus, and skin cancer.

Patch – A patch is a large macule equal to or greater than either 5 or 10 mm, across depending on one's definition of a macule. Patches may have some subtle surface change, such as a fine scale or wrinkling, but although the consistency of the surface is changed, the lesion itself is not palpable

Page 3: skin lesions

Wheal – A wheal is a rounded or flat-topped, pale red papule or plaque that is characteristically evanescent, disappearing within 24 to 48 hours.

Nodule – A nodule is morphologically similar to a papule, but is greater than either 5 or 10 mm in both width and depth, and most frequently centered in the dermis or subcutaneous fat. The depth of involvement is what differentiates a nodule from a papule.

Plaque – A plaque has been described as a broad papule, or confluence of papules equal to or greater than 1 cm,[ or alternatively as an elevated, plateau-like lesion that is greater in its diameter than in its depth

Page 4: skin lesions

Vesicle – A vesicle is a circumscribed, fluid-containing, epidermal elevation generally considered less than either 5 or 10 mm in diameter at the widest point.

Bulla – A bulla is a large vesicle described as a rounded or irregularly shaped blister containing serous or seropurulent fluid, equal to or greater than either 5 or 10 mm,depending on one's definition of a vesicle.

A tumor is a solid mass of the skin or subcutaneous tissue; it is larger than a nodule. (Please bear in mind this definition does not at all mean that the lesion is a neoplasm.)

Page 5: skin lesions

Telangiectasia – A telangiectasia represents an enlargement of superficial blood vessels to the point of being visible

Pustule – A pustule is a small elevation of the skin containing cloudy[ or purulent material usually consisting of necrotic inflammatory cells. These can be either white or red.

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SECONDARY SKIN LESIONS• Scale

• Lichenification• Keloid• Scar

• Excoriation• Fissure• Erosion•Ulcer• Atrophy

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Excoriation – a punctate or linear abrasion produced by mechanical means (often scratching), usually involving only the epidermis but not uncommonly reaching the papillary dermis

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"Baby Face." Baby Skin. N.p., n.d. Web. 5 Sept. 2012. <beautyandfashiondiva.com/wp-content/uploads/2011/03/baby-face.jpg>."Cutaneous Conditions." Wikipedia. N.p., n.d. Web. 5 Sept. 2012. <en.wikipedia.org/wiki/Cutaneous_conditions>."Primary Skin Lesions." Skin Lesions. N.p., n.d. Web. 5 Sept. 2012. <wps.prenhall.com/wps/media/objects/3020/3092719/cyk/Tab44_02b.jpg>."Scratch." Scratch. N.p., n.d. Web. 5 Sept. 2012. <timewellness.files.wordpress.com/2012/01/scratch.jpg?w=360&h=240&crop=1>."Skin Lesions." Patch. N.p., n.d. Web. 5 Sept. 2012. <dermaproblems.com/wp-content/uploads/2011/05/21.jpg>."Skin Lesions | Definition and Patient Education | Healthline." Medical Information & Trusted Health Advice: Healthline. N.p., n.d. Web. 6 Sept. 2012. <http://www.healthline.com/galecontent/skin-lesions#1>."Skin Lesions: Tumor." Home Page, Department of Pediatrics. N.p., n.d. Web. 6 Sept. 2012. <http://www.pediatrics.wisc.edu/education/derm/tuta/tumor.html>."Telangiectasia." Telangiectasia. N.p., n.d. Web. 5 Sept. 2012. <www.dermnetnz.org/site-age-specific/img/telangiectasia-s.jpg>.

WORKS CITED