Primary extra-pancreatic pancreatic-type acinar cell carcinoma in the right perinephric space: A case report and review of literature

Figure 1 Computed tomography. A: Pre-contrast image in the transverse plane showed that the density of mass was 40 HU (arrow); B-D: On a contrast-enhanced scan, the tumor presented uneven high enhancement with a stellate central scar in arterial phase (B, 111 HU, orange star) and withdrawal enhancement uniformly in portal vein (C, 95 HU) and delayed phases (D, 79 HU); E: On multiplanar reconstruction, the blood supply of the tumor derives from the right testicular artery (orange arrowhead).