Nodule Biopsy – Friday Pop Quiz – 11/23

A nodule biopsy is performed from a 70-year-old woman’s arm. The histology is shown here. What is the diagnosis best stained with?

Nodule Biopsy

A.) CD56
C.) S-100
D.) TTF-1
E.) CK5-6

To find out the correct answer and read the explanation, click here.

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