Histopathology – Friday Pop Quiz 6/21
What is the best description of the histopathology expected for the border of the lesion seen here?
A. Regular elongated rete ridges with superficial small vessels
B. Epidermal spongiosis with atypical lymphocytes spreading into the epidermis
C. Perivascular lymphocytic infiltrate with prominent eosinophils
D. Hyperplasia of the superficial epidermis
E. Parakeratosis in a column …
What is the best description of the histopathology expected for the border of the lesion seen here?
A. Regular elongated rete ridges with superficial small vessels
B. Epidermal spongiosis with atypical lymphocytes spreading into the epidermis
C. Perivascular lymphocytic infiltrate with prominent eosinophils
D. Hyperplasia of the superficial epidermis
E. Parakeratosis in a column … 
Scrofuloderma is most commonly associated with an underlying infection of what organ system?
A. Lymph nodes
B. Spine
C. Lungs
D. Gastrointestinal tract
E. No underlying systemic disease
To find out the correct answer and read the explanation, click here.
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Which of the following should NOT be included on the differential diagnosis of this patient?
A. Photoallergic contact dermatitis.
B. Airborne contact dermatitis.
C. Chronic actinic dermatitis.
D. Drug photosensitivity.
E. Solar urticaria.
To find out the correct answer and read the explanation, click here.
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Which member of the tetracycline family is most likely to have caused this photomediated reaction?
A. Demeclocycline
B. Doxycycline
C. Minocycline
D. Oxytetracycline
E. Tetracycline
To find out the correct answer and read the explanation, click here.
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What is the most likely diagnosis in this 16 year old patient who developed this generalized eruption 2 weeks after onset of sore throat due to strep infection?
A. Psoriasis
B. Pityriasis rosea
C. Cutaneous T-cell lymphoma
D. Contact dermatitis
E. Lichen planus
To find out the correct answer and read the explanation, click here.
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