Chapter 16: Pathology

Question 1

crust

Answer 1

collection of dried serum and cellular debris

Question 2

cyst

Answer 2

thick-walled, closed sac or pouch containing fluid or semisolid material

Question 3

erosion

Answer 3

wearing away or loss of epidermis

Question 4

fissure

Answer 4

groove or crack-like sore

Question 5

macule

Answer 5

flat lesion measuring less than 1cm in diameter

Question 6

nodule

Answer 6

solid, round or oval elevated lesion 1cm or more in diameter

Question 7

papule

Answer 7

small (less than 1cm in diameter), solid elevation of the skin

Question 8

polyp

Answer 8

growth extending from the surface of mucous membrane

Question 9

pustule

Answer 9

papule containing pus

Question 10

ulcer

Answer 10

open sore on the skin or mucous membrane (deeper than an erosion)

Question 11

vesicle

Answer 11

small collection (papule) of clear fluid (serum); blister

Question 12

wheal

Answer 12

smooth, edematous (swollen) papule or plaque that is redder or paler than the surrounding skin

Question 13

alopecia

Answer 13

absence of hair from areas where it normally grows

Question 14

ecchymosis, ecchymoses

Answer 14

bluish-purplish mark (bruise) on the skin

Question 15

petechia, petechiae

Answer 15

small, pinpoint hemorrhage

Question 16

pruritus

Answer 16

itching

Question 17

acne

Answer 17

chronic papular and pustular eruption of the skin with increased production of sebum

Question 18

burns

Answer 18

injury to tissues caused by heat contact

Question 19

cellulitis

Answer 19

diffuse, acute infection of the skin marked by local heat, redness, pain, and swelling

Question 20

eczema (atopic dermatitis)

Answer 20

inflammatory skin disease with erythematous, papulovesicular, or papalosqamous lesions

Question 21

exanthematous viral diseases

Answer 21

rash (exanthem) of the skin due to a viral infection

Question 22

gangrene

Answer 22

death of tissue associated with loss of blood supply

Question 23

impetigo

Answer 23

bacterial inflammatory skin disease characterized by vesicles, pustules, and crusted-over lesions

Question 24

psoriasis

Answer 24

chronic, recurrent dermatosis marked by itchy, scaly, red plaqes covered by silvery gray scales

Question 25

scabies

Answer 25

contagious, parasite

Question 26

scleroderma

Answer 26

chronic progressive disease of the skin and internal organ with hardening and shrinking of connective tissue

Question 27

sytemic lupus erythematosus (SLE)

Answer 27

chronic autoimmune inflammatory disease of collagen in skin, joints, and internal organs

Question 28

tinea

Answer 28

infection of the skin caused by fungus

Question 29

urticaria (hives)

Answer 29

acute allergic reaction in which red, round wheals develop on the skin

Question 30

vitiligo

Answer 30

loss of pigment (depigmentation) in areas of the skin (milk-white patches)

Question 31

callus

Answer 31

increased growth of cells in the keratin layer of the epidermis caused by presure or friction

Question 32

keloid

Answer 32

excess hypertrophied, thickened scar developing after trauma or surgical insicion

Question 33

keratosis

Answer 33

thickened and rough lesion of the epidermis; associated with aging or skin damage

Question 34

leukoplakia

Answer 34

white, thickened patches on mucous membrane tissue of the tongue or cheek (evolves to squamous cell carcinoma)

Question 35

nevus, nevi

Answer 35

pigmented lesion or the skin

Question 36

verruca, verrucae

Answer 36

epidermal growth (wart) caused by virus

Question 37

basal cell carcinoma

Answer 37

malignant tumour of the basal cell layer of the epidermis

Question 38

squamous cell carcinoma

Answer 38

malignant tumour of the squamous epithelial cells in the epidermis

Question 39

malignant melanoma

Answer 39

cancerous growth composed of melanocytes

Question 40

kaposi sarcoma

Answer 40

malignant, vascular, neoplastic growth characterized by cutaneous nodules

Question 41

bacterial analyses

Answer 41

samples of skin are examined for presence of microorganisms

Question 42

fungal tests

Answer 42

scrapings from skin lesions, hair specimens, or nail clippings are sent to a laboratory for culture and microscopic examination

Question 43

cryosurgery

Answer 43

use of subfreezing temperature achieved with liquid nitrogen application to destroy tissue

Question 44

curettage

Answer 44

use of a sharp dermal curette to scrape away a skin lesion

Question 45

electrodesiccation

Answer 45

tissue is destroyed by burning with an electric spark

Question 46

Mohs surgery

Answer 46

thin layers of malignant tissue are removed, and each slice is examined under a microscope to check for adequate extent of the resection

Question 47

skin biopsy

Answer 47

suspected malignant skin lesions are removed and examined microscopically by a pathologist

Question 48

skin test

Answer 48

substances are injected intradermally or applied to the skin and results are observed