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Oral Lesion Terminology
Terms describing lesions
23
Health Care
Graduate
03/08/2009

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Term
plaque
Definition
flat, slightly elevated lesion
Term
macule
Definition
flat area of color change
Term
papule
Definition
solid, raised, < 5mm diameter
Term
nodule
Definition
solid, usually raised, >5mm diameter
Term
fissure
Definition
slit-like groove
Term
vesicle
Definition
fluid filled, < 5mm diameter (blister)
Term
bulla
Definition
fluid filled, >5mm diameter (large blister)
Term
pustule
Definition
fluid filled w/purulet material
Term
erosion
Definition
partial loss of surface epithelium
Term
ulcer
Definition
total loss of surface epithelium
Term
erythematous
Definition
red
Term
edmatous
Definition
swollen due to accumulation of watery fluid
Term
exophytic
Definition
growing outward
Term
endophytic
Definition
growing inward
Term
indurated
Definition
abnormally hard
Term
fixed
Definition
attached to adjacent or surrounding structures
Term
sessile
Definition
base is as wide or wider than rest of the lesion
Term
pedunculated
Definition
lesion is on a stalk or has a base that is narrower than rest of the lesion
Term
papillary
Definition
numerous surface projections
Term
verrucous
Definition
rough, warty surface
Term
leukoplakia
Definition
white plaque, 5-25% dysplasia, 4% cancer
Term
erythroplakia
Definition
red plaque, 90% dysplastic/carcinoma
Term
erythroleukoplakia
Definition
mixed white and red plaque
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