An Analysis of Computed Tomography Imaging Features and Predictive Factors for Postoperative Recurrence and Metastasis of Abdominal Paragangliomas

Figure 1

One case of a surgery confirmed retroperitoneal paraganglioma in a 77-year-old male that located in the left paraaortic area. (a) Nonenhanced CT scan presented a low heterogeneity density with an irregular shape tumour size of about 97 mm × 69 mm. The presence of multiple-size varied cystic degeneration and speckled calcification. (b, c) Dynamic enhanced CT scans revealed an obvious heterogeneously enhanced tumour for solid components. Peritumor and intratumor blood vessels (arrow). CT values were 32, 154, and 134 Hounsfield units (HU), respectively, in the nonenhanced, arterial, and venous phases.