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30 Cards in this Set
- Front
- Back
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lesion-
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-an area of pathologically altered tissue; the teo types od lesions are primary and secondary
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primary lesions
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lesions arising from previously normal skin
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macule or macula
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-primary lesion
-flat, nonpalpable changes in skin color -a flat, discolored spot in the skin up to 1cm across (e.g., a freckle) |
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patch
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-primary lesions
-flat, nonpalpable changes in skin color -a flat, discolored area on the skin larger than 1 cm |
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papule
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-primary lesions
-elevated, palpable solid masses -a solid mass on the skin up to 0.5cm in diameter (e.g., a nervus [mole]) |
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plaque
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-primary lesions
-elevated, palpable solid masses -a solid mass greater than 1cm in diameter and limited to the surface of the skin |
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nodule
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-primary lesions
-elevated, palpable solid masses -a solid mass greater than 1 cm that extends deeper into the epidermis |
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tumor
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-primary lesions
-elevated, palpable solid masses -a solid mass larger than 1-2 cm |
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wheal
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-primary lesions
-elevated, palpable solid masses -an area localized skin edema (swelling) (e.g., a hive) |
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vesicle
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-primary lesions
-elevations formed by fluid within a cavity -little bladder; an elevated, fluid-filled sac (blister) within or under the rpidermis up to 0.5 in diameter (e.g., a fever blister) |
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bulla
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-primary lesions
-elevations formed by fluid within a cavity -a blister larger than 0.5 cm (e.g., a second-degree burn) (bulla=bubble) |
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pustule
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-primary lesions
-elevations formed by fluid within a cavity -a pus-filled sac (e.g., a pimple) |
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secondary lesions
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-lesions that result in changes in primary lesions
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erosion
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-secondary lesions
-loss of skin surface -gnawed away; loss of superficial epidermis, leaving an area of moisture but no bleeding (e.g., area of moisture after rupture of a vesicle) |
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ulcer
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-secondary lesions
-loss of skin surface -an open sore on the skin or mucous membrane that can bleed and scar; sometimes accompanied by infection (e.g., decubitus ulcer) |
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excoriation
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-secondary lesions
-loss of skin surface -a scratch mark |
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fissure
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-secondary lesions
-loss of skin surface -a linear crack in the skin |
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scale
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-secondary lesions
-material on skin surface -a thin flake of exfoliated epidermis (e.g., dandruff) |
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crust
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-secondary lesions
-material on skin surface -a dried residue of serum (body liquid), pus, or blood on the skin (e.g., as seen in impetigo) |
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vascular lesions
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-lesions of a blood vessel
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cherry angioma
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-vascular lesions
-a small, round, bright red blood vessel tumor on the skin, often on the truck of the elderly |
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telangioectasia
spider angioma |
-vascular lesions
-a tiny, red blood vessel lesion formed by the dilation of a group of blood vessels radiating from a central arteriole, most commonly on the face, neck, or chest (telos= end) |
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purpuric lesions
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purpura; lesions resulting from hemorrhages into the skin
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petechia
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-purpuric lesions
-spot; reddish-brown, minute hemorrhagic spots on the skin that indicate a bleeding tendency; a small purpura |
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ecchymosis
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-purpuric lesions
-bruise: a black and blue mark; a large purpura (chymo=juice) |
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cicatrix of the skin
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-scar formations
-a mark left by the healing of a sore or wound, showing the replacement of destroyed tissue by fibrous tissue (cicatrix=scar) |
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keloid
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-scar formations
-an abnormal overgrowth of scar tissue that is thick and irregular (kele=tumor) |
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epidermal tumors
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-tumors arising from the epidermis
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nevus
dysplastic nevus |
-epidermal tumors
-a congenital malformation on the skin that can be epidermal or vascular; also called a mole -a mole with precancerous changes |
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verruca
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-epidermal tumors
-an epidermal tumor caused by a papilloma virus, also called a wart |
