Figure 5g. Ganglioneuroma. (a) Spin-echo T2-weighted MR image (2,000/90) shows a moderately hyperintense mass. (b) T1-weighted MR image (690/12) shows a homogeneously hypointense mass. The lesion is close to the inferior vena cava (*) and pancreatic head (arrow). (c) FLASH two-dimensional gradient-echo T1-weighted MR image (690/12) obtained immediately after injection of gadolinium contrast material shows enhancement of only fine septa. (d, e) Corresponding MR images obtained 2 minutes (d) and 4 minutes (e) after contrast material injection show delayed incomplete filling of the mass. (f) Photograph of the gross specimen shows a densely fibrous, well-limited tumor. Scale is in centimeters. (g) Photomicrograph (original magnification, x10; hematoxylin-eosin stain) shows bundles of ganglion cells (*) encompassing the adrenal gland (arrow).