Surgical resection of a recurrent retroperitoneal paraganglioma: A case report

Figure 1 Imaging of the retroperitoneal mass. A and B: Contrast-enhanced computed tomography scan of the abdomen showing a well-defined, heterogeneous retroperitoneal mass; C: Diffusion-weighted imaging reveals restricted diffusion in the area.

Figure 2 Intraoperative specimen photographs. A: The resected specimen measured approximately 6 cm in diameter; B: Internal inspection of the tumor.

Figure 3 Histopathological and immunohistochemical examination of the resected tumor. A: Hematoxylin and eosin staining (40 ×); B: CD56 (40 ×); C: Synaptophysin (40 ×); D: Chromogranin A (40 ×); E: S100 (40 ×); F: Neuron-specific enolase (40 ×).

Figure 4 Postoperative computed tomography scan of the abdomen. A: Computed tomography (CT) images of the abdomen 2 weeks after surgery indicated that the tumor was completely resected, with no significant residual tissue observed; B: CT images of the abdomen 6 months after surgery indicated a few scar strips in the surgical area.