Subclinical paraganglioma of the retroperitoneum: A case report

Figure 1 Abdominal computed tomography and magnetic resonance imaging show a 6. 5 cm × 4.5 cm cystic solid mass in the left upper abdomen with heterogeneous density and mild enhancement in the arterial phase. A: Computed tomography (CT) plain scan period; B: CT arterial phase; C: CT venous phase; D: Magnetic resonance imaging (MRI) plain scan period; E: MRI arterial phase; F: MRI venous phase.