Pathological Flashcards
lesions
areas of tissue altered due to pathological condition
Primary lesions
appear on previously normal skin
Secondary lesions
abnormalities that result from changes in primary lesions
Vascular lesions
blood vessel lesions that show through the skin
Macule
primary lesion, skin discoloration, freckle or mole
Patch
primary lesion, skin discoloration
Papule
primary lesion, small elevated mass (pimple)
Nodule
primary lesion, small patch on skin
Polyp
primary lesion, a large pimple or small node
Polyp
primary lesion, any mass that projects upward (on a slender stalk = pediculated polyp, broad base = sessile polyp)
Tumor
primary lesion, any abnormal tissue growth
wheal
primary lesion, a smooth, slightly elevated area, usually associated with allergic itching
bulla (pl. bullae)
primary lesion, large blister (more than 5mm)
pustule
primary lesion, small elevated mass containing pus
vesicle
primary lesion, small mass containing fluid
cyst
primary lesion, may be filled with fluid or gas
pilonidal cyst
contains hairs
sebaceous cyst
contains yellow sebum
erosion excoriation
secondary lesion, shallow area of skin worn away by friction or pressure
fissure
secondary lesion, scratched area of skin, usually covered with dry blood
ulcer
secondary lesion, a deep furrow or crack in skin surface
decubitus
secondary lesion, wound with loss of tissue and often with inflammation, especially with decubitus ulcers or pressure sores
Decubitus ulcers
(or pressure sores) chronic ulcers on skin over bony parts that are under constant pressure
Scale
secondary lesion, thin plates of epithelium formed on the skin’s surface
Crust
secondary lesion, dried blood or pus that forms on the skin’s surface
keloid
secondary lesion, a firm, raised mass of scar tissue
