Friday Pop Quiz 10/10/2025
A 7-year-old boy presents with recurrent crops of pink papules on the trunk, buttocks, and proximal extremities, as shown in the clinical image. The lesions ulcerate and heal with varioliform scarring. Which of the following histologic findings would not be expected in this condition?
A. Lichenoid infiltrate
B. Extravasation of red blood cells
C. Dyskeratosis
D. Parakeratosis
E. …
A 7-year-old boy presents with recurrent crops of pink papules on the trunk, buttocks, and proximal extremities, as shown in the clinical image. The lesions ulcerate and heal with varioliform scarring. Which of the following histologic findings would not be expected in this condition?
A. Lichenoid infiltrate
B. Extravasation of red blood cells
C. Dyskeratosis
D. Parakeratosis
E. … 
A 15-year-old boy presents with a unilateral, irregularly bordered, tan-brown patch on the right chest and shoulder with increased terminal hair growth, consistent with Becker’s nevus as seen in the clinical image. Which of the following extracutaneous findings is most likely to be associated with Becker’s nevus syndrome?
A. Ipsilateral breast hypoplasia
B. Hyperhidrosis
C. Increa … 
In a transplant patient who has developed numerous of these lesions requiring Mohs, discussion with the patients transplant team regarding switching to which of the following medications may reduce risk deloping more of these in the future?
A. Sirolimus
B. Cyclosporine
C. Azathioprine
D. Voriconazole
E. Methotrexate
To find out the correct answer and read the explanation, click … 
What is the most common secondary neoplasm identified in this lesion?
A. Melanoma
B. Squamous cell carcinoma
C. Basal cell carcinoma
D. Trichoblastoma
E. Trichilemmoma
F. Poroma
To find out the correct answer and read the explanation, click here.
The image is from The Full Spectrum of Dermatology: A Diverse and Inclusive Atlas.
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Which of the following is true regarding this entity?
A. The subcutaneous variant is most common in children
B. 75% of localized lesions are still present 2 years after diagnosis
C. Localized lesions often ulcerate and heal with scarring
D. The perforating variant classically involves the lower extremities
E. Diabetes is present in the majority of patients with the generalized v … 