Primary primitive neuroectodermal tumor in the pericardium—a focus on imaging findings: A case report

Figure 3 Magnetic resonance imaging of pericardial primitive neuroectodermal tumor in a 3-year-old boy. A and B: The mass showed a heterogeneous signal, mainly slightly hyperintense on T1-weighted images (A) and isointense on T2-weighted images (B). The left coronary artery branch was shown to be embedded within the mass (B), suggesting a pericardial origin of the tumor; C: Contrast enhanced magnetic resonance imaging showed the mass was inhomogeneous with marked enhancement, with a clear and definite border between the mass and the left ventricle wall.