MR Imaging in the Diagnosis of Desmoplastic Infantile Tumor: Retrospective Study of Six Cases

Case 1. Axial T1- (A), axial T2- (B), and axial postgadolinium T1-weighted (C) MR images show a large supratentorial and heterogeneous tumor involving the frontotemporoparietal lobes with a major mass effect. The solid part of the tumor has two components. The peripheral part is heterogeneous and moderately hyperintense on T1-weighted images and shows low signal intensity on T2-weighted images suggestive of intratumoral bleeding; the medial part is enhanced after gadolinium injection. The posterior cystic part of the lesion is of high signal intensity on T1- and T2-weighted images, which is compatible with a recent bleeding episode. Radiologic appearance is suggestive of a malignant lesion.