Skin Lesion – Friday Pop Quiz 01/08
Histologically, this lesion shows plump, polygonal cells arranged in nests and fascicles with granular cytoplasm. Which immunohistochemical stain would be positive?
A. CD31
B. Synaptophysin
C. Factor XIIIa
D. S-100
E. CD34
To find out the correct answer and read the explanation, click here.
Brought to you by our brand partner Derm In-Review. A product of SanovaWorks.
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Histologically, this lesion shows plump, polygonal cells arranged in nests and fascicles with granular cytoplasm. Which immunohistochemical stain would be positive?
A. CD31
B. Synaptophysin
C. Factor XIIIa
D. S-100
E. CD34
To find out the correct answer and read the explanation, click here.
Brought to you by our brand partner Derm In-Review. A product of SanovaWorks.
… 
The pathology of this lesion demonstrates reticulate strands of the epidermis with clefting between the strands and the stroma. What is the diagnosis?
A. Eccrine syringofibroadenoma
B. Fibroepithelioma of Pinkus
C. Squamous cell carcinoma
D. Reticulate seborrheic keratosis
E. Tumor of the follicular infundibulim
To find out the correct answer and read the explanation, click her … 
This 48 year old woman tells you these lesions began as "acne bumps" on her legs. A biopsy reveals ulceration and a mixed inflammatory infiltrate, including neutrophils. A tissue culture for infectious organisms is negative. What is the most likely underlying systemic condition in this patient?
A. Celiac disease
B. Ovarian cancer
C. Chronic pancreatitis
D. IgA monoclonal gammopathy … 
The infant shown in this image is at risk for which of the following complications?
A. Cleft palate
B. Diaphragmatic hernia
C. Hypospadias
D. Imperforate anus
E. Coarctation of the aorta
To find out the correct answer and read the explanation, click here.
Brought to you by our brand partner Derm In-Review. A product of SanovaWorks.
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While performing Mohs micrographic surgery for this squamous cell carcinoma (shown in picture), you sever a nerve that lies superficially in the temple, just beneath the thin dermis and subcutaneous fat. The patient would have trouble performing which of the following?
A. Raising his eyebrows
B. Grimacing
C. Smiling
D. Closing his eyes
E. Chewing food
To find out the correct an …