Med Surg - Last Quiz (12, 22, 24, 25)

Question 1

Which statements characterize malignant melanomas (select all that apply)?

a. Lesion is keratotic and firm
b. Neoplastic growth of melanocytes
c. Skin cancer with highest mortality rate
d. Irregular color and asymmetric shape
e. Frequently occurs on previously damaged skin

Answer 1

b. Neoplastic growth of melanocytes
c. Skin cancer with highest mortality rate
d. Irregular color and asymmetric shape

Actinic and firm lesions are actinic keratosis and squamous cell carcinoma. Squamous cell carcinoma frequently occurs in previously damaged skin.

Question 2

What is the most common skin cancer and has pearly borders?

a. Actinic keratosis
b. Basal cell carcinoma
c. Malignant melanoma
d. Squamous cell carcinoma

Answer 2

b. Basal cell carcinoma

Actinic keratosis is an irregularly shaped, flat, slightly erythematous papule with indistinct borders and an overlying hard keratotic scale or horn. Malignant melanoma tumors arise in melanocytes. Malignant melanoma is the deadliest skin cancer and has an increased risk in people with dysplastic nevus syndrome. Squamous cell carcinoma is a malignant neoplasm of keratinizing epidermal cells.

Question 3

What skin condition has keratotic and firm lesions, is a precursor of squamous cell carcinoma, and is treated with topical flourouracil (5-FU)?

a. Actinic keratosis
b. Basal cell carcinoma
c. Malignant melanoma
d. Squamous cell carcinoma

Answer 3

a. Actinic keratosis

Basal cell carcinoma is noduloulcerative with pearly borders. Malignant melanoma tumors arise in melanocytes. Malignant melanoma is the deadlist skin cancer and has an increased risk in people with dysplastic nevus syndrome. Squamous cell carcinoma is a malignant neoplasm of keratinizing epidermal cells.

Question 4

What characteristic is commonly seen with dysplastic nevus syndrome?

a. Associated with sun exposure
b. Precursor of squamous cell carcinoma
c. Slow-growing tumor with rare metastasis
d. Lesion has irregular color and asymmetric shape

Answer 4

d. Lesion has irregular color and asymmetric shape

Dysplastic nevus syndrome involves atypical moles with irregular borders and various shades of color.

Question 5

Describe what is indicated by the ABCDEs of malignant melanoma.
A
B
C
D
E

Answer 5

Asymmetry: one half unlike other half
Border: irregular and poorly circumscribed
Color: varied within lesion
Diameter: larger than 6 mm
Evolving: look and appearance is changing