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ABPath Anatomic Pathology Practice Questions - American Board Of Pathology Anatomic Pathology Primary Certification Examination Exam

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On core biopsy, a breast lesion demonstrates low-grade nuclei arranged in cribriform and micropapillary architecture confined within duct walls with intact myoepithelium on p63 and calponin. There is no invasion. This is:
Correct Answer:
DCIS, low grade

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