Friday Pop Quiz 12/19/2025
What immunohistochemical stain is most likely to be positive in this condition?
A. HPV
B. HHV-8
C. PAS
D. S100
E. CD207
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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.
Brought to you by our brand partner
*Brand partners had no involvement in the content of the questions or answers. … 
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 … 
Which histologic subtype of the lesion shown is most aggressive?
A. Solid
B. Nodular
C. Superficial
D. Morpheaform
E. All are equal
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.
… 
A previously healthy 55-year-old patient presents with a four-month history of the pictured indurated papules and plaques. History does not reveal prior skin problems. The lesions started on the cheeks and are now affecting the forehead. The sun seems to exacerbate the condition, causing mild burning and pruritus. Patient complains of cheek swelling that worsens in the morning and improves as … 
After treating this patient with Onabotulinumtoxin-A, they return to clinic complaining of their right upper eyelid drooping and interfering with their vision. What is the mechanism of action of the medicated eye drops which has been shown to be beneficial when this adverse effect occurs?
A. Alpha agonist which results in contraction of the superior tarsal muscle
B. Alpha agonist which resul …