Figure 3From: Soft-tissue perineurioma of the retroperitoneum in a 63-year-old man, computed tomography and magnetic resonance imaging findings: a case report Dynamic MR images show gradually increasing enhancement of the tumor after IV adminsitration of gadolinium-DTPA. Pre-contrast (top left); post-contrast, 30 sec (top right); 60 sec (bottom left); and 90 sec (bottom right).Back to article page