Friday Pop Quiz 8/22/2025
A 70-year-old man presents for Mohs micrographic surgery (MMS) to remove a 2.3-cm squamous cell carcinoma from the right temple. The procedure is expected to require multiple stages and a complex linear repair. His medical history includes atrial fibrillation and peripheral arterial disease. He is taking warfarin …
A 70-year-old man presents for Mohs micrographic surgery (MMS) to remove a 2.3-cm squamous cell carcinoma from the right temple. The procedure is expected to require multiple stages and a complex linear repair. His medical history includes atrial fibrillation and peripheral arterial disease. He is taking warfarin … 
Your patient with extensive actinic damage and many of the lesions seen here is interested in field therapy with a light-based modality. On a cellular level, how does photodynamic therapy kill cells that make up this lesion?
A. Heat shock proteins
B. Inhibition of pyrimidine nucleotide synthesis
C. Neutrophil-mediated, antibody-dependent cellular cytotoxicity
D. Reactive singlet ox … 
Derm In-Review, a top dermatology board review prep course, recently took learning on the road to Harvard. A Dermatology In-Review Live Board Review Workshop was held in May at Massachusetts General Hospital, Harvard Medical School’s oldest and largest teaching hospital, with resident attendees from the hospital as well as Boston University and the University of Massachusetts. Sanofi Regeneron s … 
What condition on the eyelids is depicted in the image?
A. Eruptive xanthoma
B. Xanthelasma
C. Plane xanthomas
D. Verruciform xanthomas
E. Tuberous xanthomas
To find out the correct answer and read the explanation, click here.
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A 3-month-old infant presents with the findings seen in the photo in the first week of life. The mother reports the infant was born with a membrane encasing it that later "peeled off". History is also notable for poor weight gain and multiple rounds of antibiotics since birth. On physical exam there is diffuse erythema, scaling, and sparse eyebrow hair. Laboratory studies show eosinophilia (1, … 