Figure legends
Figure 1. A: Sheets of tumor cells seen with hematoxylin and eosin staining under 10x magnification. B: Cytoplasmic tumor cell staining with synaptophysin. C: Ki-67 staining was noted in approximately 5 % of tumor cells. D: Intense nuclear TTF1 staining was noted in the tumor cells.
Figure 2. Positron emission tomography showing FDG avid left lower neck, bilateral supraclavicular, and upper mediastinal lymph nodes.