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Skin Lesions WVSOM
Boisvert Lecture 9/18
| papule | solid, raised less than 1 cm |
| nodule | solid, raised greater than 1 cm but less than 2 cm |
| tumor | solid, raised greater 2 cm |
| plaque | raised, surface area large in relation to height greater than 1 cm |
| wheal | raised, leakage fluid into dermis |
| vesicle | fluid filled, raised, less than 1 cm |
| bulla | fluid filled, raised, greater than 1 cm |
| pustule | raised, less 1 cm filled purulent fluid |
| comedo | a plug of sebum and keratin in the opening of a hair follicle, the opening can be dilated forming a blackhead, or closed forming a whitehead. |
| burrow | a channel under the skin produced by a parasite |
| cyst | raised, encapsulated, in dermis or subcutaneous, filled liquid or semisolid |
| abscess | accumulation of purulent material in the dermis or subcutaneous |
| furuncle | A necrotizing form of inflammation of a hair follicle |
| carbuncle | A coalescence of several furuncles |
| milia | keratin filled cysts in distal sweat gland |
| Erythema | pink or red blanchable discoloration due dilated blood vessels |
| Petechiae | nonblanching, less .5 cm intravascular defect |
| Purpura | nonblanching greater than .5 cm intravascular defect |
| Ecchymosis | nonblanching due to vascular destruction or vasculitis |
| Spider angioma | blanchable, red body with radiating legs |
| Venous star | non blanchable, bluish spider |
| Telangiectasia | fine red lines due to dilatation of capillaries |
| Capillary hemangioma | macular patch due to dilatation of capillary |
| erosion | loss of superficial epidermis |
| ulcer | loss of epidermis and at least part of dermis |
| fissure | linear crack form epidermis to dermis |
| excoriation | superficial linear trauma |
| scaling | shedding stratum cornea |
| crusting | dried serum, pus or blood |
| lichenification | thickening and roughening |
| scar | connective tissue replacement |
| keloid | hypertrophied scar |
| sclerosis | Diffuse or circumscribed hardening of the skin |
| atrophy | thinning of the epidermis |
| Annular | ring shaped |
| Arcuate | partial rings |
| Circinate | circular |
| Confluent | running together |
| Discoid | disc shaped without central clearing |
| Grouped | clustered together |
| Iris | circle within a circle |
| Linear | in a line |
| Reticulated | lace like |
| Serpiginous | snake like |
| macule | flat less than 1 cm |
| patch | flat greater than 1 cm |
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