case_images: PMC11765883_01
case_images: PET-CT shows uptake of F18 FDG in correspondence with anterior mediastinal mass. Brighter colors such as white, yellow and orange denote a higher F18 FDG uptake.
case_images: jcm-14-00620-g001.jpg
case_images: PMC11765883_01_jcm-14-00620-g001.jpg
case_images: jcm-14-00620-f001
case_images: The FDG uptake appeared to be heterogeneous for the presence of photopenic areas mainly due to the cystic aspect of the mass (Figure 1).
case_images: A multilocular cyst with a wall composed of lymphoid tissue organized in follicular structures.
case_images: jcm-14-00620-g002.jpg
case_images: PMC11765883_01_jcm-14-00620-g002.jpg
case_images: jcm-14-00620-f002
case_images: Immunohistochemistry for CD20 shows the nodular architecture of the lymphoid tissue with T cell (CD20-negative) in the internodular zone (light areas between brown zones).
case_images: jcm-14-00620-g003.jpg
case_images: PMC11765883_01_jcm-14-00620-g003.jpg
case_images: jcm-14-00620-f003
case_images: Immunohistochemistry for CD23 highlights that the CD20+ nodules are follicles (brown areas), with germinal centers, revealing the dendritic cells meshwork.
case_images: jcm-14-00620-g004.jpg
case_images: PMC11765883_01_jcm-14-00620-g004.jpg
case_images: jcm-14-00620-f004