PMC4898291_01
39-year-old woman with advanced breast cancer and nonvisualized sentinel node. Maximum-intensity projection (MIP) image from FDG PET scan demonstrating primary tumor in the left breast as well as left axillary lymph-node involvement.
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Focal metabolic activity was noted corresponding to a benign-appearing, 1.4 x 0.9-cm, low-lying left axillary lymph node (maximum SUV 1.6), and a 1.2-cm lymph node deep to the pectoralis minor muscle with maximum SUV 2.3 (Figure 1A, Figure 1B, Figure 1C).
39-year-old woman with advanced breast cancer and nonvisualized sentinel node. FDG PET-CT axial image demonstrating the dominant suspicious lobular soft-tissue mass in the upper inner quadrant of the left breast, measuring 1.9 cm with a maximum SUV of 9.9. Focal metabolic activity was also noted corresponding to a benign-appearing, 1.4 x 0.9-cm, low-lying left axillary lymph node with maximum SUV of 1.6.
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Lymphatics were visualized cranial to the injection site at 30 minutes; however, no discrete sentinel node was visualized at the time of imaging (Figs. 2A, 2B).