Question 1

Basal cell carcinoma of the skin often contains mutations of the p53 gene and the gene called PTCH (mutated in congenital nevoid basal cell carcinoma syndrome) . These mutations are most likely the result of action of which of the following?

Accepted Answer

A)   Epidermal growth factor
B)   G-protein signal transduction system
C)   Chemical carcinogens from the environment
D)   Ultraviolet light
E)   Cosmic radiationF) C) and D)
G) A) and B) D

Question 2

Which of the following skin lesions becomes darker and more pigmented upon exposure to sunlight?

Accepted Answer

A)   Vitiligo
B)   Lentigo
C)   Ephelis
D)   Congenital melanocytic nevus
E)   Dysplastic nevusF) None of the above
G) A) and D) C

Question 3

A well-demarcated, coin-like, dark brown lesion appeared on the shoulder of a 59-year-old man. The lesion appears velvety, greasy, and has a "stuck on" appearance so that it can easily be removed. Which of the following is the most likely diagnosis?

Accepted Answer

A)   Lentigo
B)   Ephelis
C)   Vitiligo
D)   Seborrheic keratosis
E)   Actinic keratosisF) C) and D)
G) A) and B)

Question 4

Which of the following skin lesions will most likely progress to invasive squamous cell carcinoma?

Accepted Answer

A)   Actinic keratosis
B)   Seborrheic keratosis
C)   Seborrheic dermatitis
D)   Epidermal inclusion cyst
E)   Steatocystoma multiplexF) A) and B)
G) A) and C) A

Exam 23: Skin

Basal cell carcinoma of the skin often contains mutations of the p53 gene and the gene called PTCH (mutated in congenital nevoid basal cell carcinoma syndrome) . These mutations are most likely the result of action of which of the following?

Correct Answer
verified
D

Which of the following skin lesions becomes darker and more pigmented upon exposure to sunlight?

Correct Answer
verified
C

A well-demarcated, coin-like, dark brown lesion appeared on the shoulder of a 59-year-old man. The lesion appears velvety, greasy, and has a "stuck on" appearance so that it can easily be removed. Which of the following is the most likely diagnosis?

Correct Answer
verified

Which of the following skin lesions will most likely progress to invasive squamous cell carcinoma?

Correct Answer
verified
A

Exam 23: Skin

Basal cell carcinoma of the skin often contains mutations of the p53 gene and the gene called PTCH (mutated in congenital nevoid basal cell carcinoma syndrome) . These mutations are most likely the result of action of which of the following?

Correct AnswerverifiedD

Which of the following skin lesions becomes darker and more pigmented upon exposure to sunlight?

Correct AnswerverifiedC

A well-demarcated, coin-like, dark brown lesion appeared on the shoulder of a 59-year-old man. The lesion appears velvety, greasy, and has a "stuck on" appearance so that it can easily be removed. Which of the following is the most likely diagnosis?

Correct AnswerverifiedShow Answer

Which of the following skin lesions will most likely progress to invasive squamous cell carcinoma?

Correct AnswerverifiedA

Correct Answer
verified
D

Correct Answer
verified
C

Correct Answer
verified

Correct Answer
verified
A