case_images: PMC3785362_01
case_images: A (Double inversion recovery T1 pre-contrast), B (Double inversion recovery T2 fat-suppressed pre-contrast). The lesion is closely associated with multiple vascular structures in the mediastinum. Note the internal tubular areas of signal void (see text).
case_images: ccrep-1-2008-127f1.jpg
case_images: PMC3785362_01_ccrep-1-2008-127f1.jpg
case_images: f1-ccrep-1-2008-127
case_images: This appeared homogenous and of slightly higher signal than skeletal muscle on T1 weighted images, with moderate signal intensity on fat-suppressed T2 weighted images (Figs. 1a/b).
case_images: A-E Dynamic first pass perfusion sequence (FGRET) from time = 0 to time = 12 secs after gadolinium injection. The position of the nodal mass (M) is shown relative to the left atrium (LA) on this coronal acquisition.
case_images: ccrep-1-2008-127f2.jpg
case_images: PMC3785362_01_ccrep-1-2008-127f2.jpg
case_images: f2-ccrep-1-2008-127
case_images: During this acquisition dramatic enhancement of the mass was seen to occur, with peak signal intensities only slightly less than those of the surrounding vascular structures and peak enhancement occurring 1-2 heartbeats after contrast appeared in the thoracic aorta (Figs. 2a-e images/movie).
case_images: A, B T1 weighted double inversion recovery pre and post gadolinium images (image B additionally acquired with fat saturation). The second image was acquired approximately 3 minutes after contrast administration. Increase in signal is seen compared to the pre-contrast image A) but is much less intense than that seen during the dynamic acquisition (Fig. 2).
case_images: ccrep-1-2008-127f3.jpg
case_images: PMC3785362_01_ccrep-1-2008-127f3.jpg
case_images: f3-ccrep-1-2008-127
case_images: Post-contrast T1 weighted imaging confirmed a persistent increase in signal intensity within the mass (Fig. 3).