Figure 17.

76-year-old female with right breast infiltrating differentiated duct carcinoma with mucinous features.

Findings: There is moderately differentiated invasive ductal carcinoma, grade 2 of 3, Nottingham score of 7. Mucin lakes are noticed in the center of the tissue obtained from partial right breast mastectomy, showing a similar lesion seen in the core needle biopsy (Figure 16).

Technique: Microscopic examination using H&E stain. Medium-power view (50×) from the partial right breast mastectomy.