Figure 3

The not recognized nodule. (a) ¹⁸ F-FDG PET-CT fused axial image: intense ¹⁸ F-FDG uptake in the mass of the upper right lobe. Another focus of intense ¹⁸ F-FDG uptake was evident medially in the upper right lobe. (b, c) A retrospective analysis of contrast-enhanced CT revealed a small nodule located near vessels corresponding to the site of ¹⁸ F-FDG uptake (white arrow).