Figure Legend:
Figure 1. Diagnostic mammogram demonstrating an oval circumscribed hyperdense mass measuring approximately 4.5 cm, with previous biopsy clip in the area of palpable concern.
Figure 2. Diagnostic US at the area of palpable concern, demonstrates a large cystic mass with some irregularity of the anterior wall with some solid appearing areas along the wall that are nondependent
Figure 3. Scanning magnification (20x) from the breast core needle biopsy specimen showing cystically dilated duct
Figure 4. Medium power (200x) view from the breast core needle biopsy specimen shows the cystically dilated duct is focally lined by a proliferation of atypical ductal epithelial cells with micropapillary growth pattern (atypical ductal hyperplasia)
Figure 5. Medium power (200x) view from the breast excision showing intermediate nuclear grade DCIS with solid and focal cribriform pattern