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. Author manuscript; available in PMC: 2021 Feb 1.
Published in final edited form as: Am J Surg Pathol. 2020 Feb;44(2):182–190. doi: 10.1097/PAS.0000000000001385

Figure 3: Example of case with upgrade at excision.

Figure 3:

A: Core needle biopsy with flat epithelial atypia (FEA) and associated calcifications (H&E, 40X); inset: higher power showing duct involved by FEA (H&E, 200X); B: Tissue slice from excision specimen with biopsy site changes (upper right) and residual FEA (lower center) (H&E, 20X); C: Tissue slice from excision specimen with no biopsy site changes and focus of invasive carcinoma, 2.2 mm (H&E, 20X); D: Higher power of focus of invasive ductal carcinoma with lobular growth pattern and focal DCIS (H&E, 100X)