Figure 2.

50-year-old patient (No. 13) with a mucinous carcinoma of the right breast with low ER/PR-expression. Note that the primary tumor could not be distinguished from normal breast tissue, while an ipsilateral axillary lymph node metastasis (histologically proven; SUV_MAX 2.9) was identified by increased ⁶⁸Ga-RM2-uptake relative to the surrounding tissue. CT (left); ⁶⁸Ga-RM2-PET (middle); fusion images (right); primary tumor indicated by white arrow; lymph node metastasis indicated by red arrows. For abbreviations see text.