Friday Pop Quiz 1/9/2026
What is the most likely diagnosis based on the following dermoscopic photograph of this asymptomatic lesion?
A. Squamous cell carcinoma
B. Angioma
C. Clear cell acanthoma
D. Basal cell carcinoma
E. Psoriasis
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What is the most likely diagnosis based on the following dermoscopic photograph of this asymptomatic lesion?
A. Squamous cell carcinoma
B. Angioma
C. Clear cell acanthoma
D. Basal cell carcinoma
E. Psoriasis
To find out the correct answer and read the explanation, click here.
Brought to you by our brand partner
*Brand partners had no involvement in the cont … 
This patient should be treated with what medication to avoid further scarring?
A. Topical tretinoin
B. Minocycline
C. Isotretinoin
D. Spironolactone
E. Bactrim
To find out the correct answer and read the explanation, click here.
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Image creadi … 
What is the underlying gene defect for this transgrediens form of palmoplanter keratoderma?
A. SLURP-1
B. TOC gene
C. Plakoglobin
D. Keratin type 1
E. Keratin type 9
To find out the correct answer and read the explanation, click here.
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*Brand partners had no involvement in the content of the questions or answers. … 
What immunohistochemical stain is most likely to be positive in this condition?
A. HPV
B. HHV-8
C. PAS
D. S100
E. CD207
To find out the correct answer and read the explanation, click here.
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A 40-year-old patient presents with a rash on his hands, as shown. It has developed in the past 6 months and is gradually becoming more severe. He describes intense pruritus. The patient is a construction worker, working primarily with concrete. He was prescribed clobetasol ointment, which provides some relief but does not clear the rash. He notes that he recently took a week-long vacation at …