Fig. 2.

Lymphoscintigraphy of a 35-year-old woman with carcinoma in situ of the left breast showing 2 intense foci of noted [^99mTc]tilmanocept localization within the left axilla. An intradermal injection (0.4 mL, 0.5 mCi, 3.0 nmol) of [^99mTc]tilmanocept was administered to the upper left quadrant of the left breast. The SPECT/CT image is a fused sagittal cross section acquired 1 h postinjection, which visualizes a sentinel lymph node (arrow) and the injection site. At 5 h after injection, 3 blue and hot lymph nodes (6,724 cps, 1,477 cps, 167 cps) were detected at surgery and excised. Pathologic examination revealed 1 histologically positive lymph node (blue with 6,700 cps, 1.7 × 1.3 × 0.7 cm) and 2 negative lymph nodes