Skin: Lesions/Neoplasms Flashcards
crust
collection of dried serum and cellular debris (scab)
cyst
thick-walled, closed sac or pouch containing fluid or semisolid material
erosion
wearing away or loss of epidermis
fissure
groove or crack-like sore
macule
flat, pigmented lesion measuring less than 1 cm in diameter
nodule
solid, round or oval elevated lesion 1 cm or more in diameter
papule
solid elevation of skin less than 1 cm in diameter
polyp
growth extending from the surface of mucus membrane
pustule
papule containing pus
ulcer
open sore on the skin or mucous membranes deeper than erosion
vesicle
small collection of clear fluid (serum); blister
wheal
smooth, edematous (swollen) papule or plaque that is centrally redder or paler than the surrounding skin
callus
increased growth of cells in the keratin layer of the epidermis caused by pressure or friction
keloid
excess hypertophied, thickened scar developing after trauma or surgical incision
cicatrix
normal scar of a healed wound
keratosis
thickened and rough lesion of the epidermis associated with aging or skin damage
leukoplakia
white, thickened patches on mucous membrane tissue of the tongue or cheek (can become squamous cell carcinoma)
nevus (nevi)
pigmented lesion of the skin; mole
verruca (verrucae)
epidermal growth caused by a virus; wart
basal cell carcinoma
malignant tumor of the cell layer of the epidermis
squamous cell carcinoma
malignant tumor of the squamos epithelial cells in the epidermis
malignant melanoma
cancerous growth composed of melanocytes
