Mass in the region of the organ of Zuckerkadel measures 10 x 4 x 7 cm ( craniocaudal ). This lesion is only of moderate patchy T2 hyperintensity. Postcontrast images delineate the lower abdominal aorta separated from the mass by a thin rim of non-or hypoenhancing tissue. There is mass-effect on the inferior vena cava, but no obvious invasion. Heavy T2-weighted fat- suppressed sequence concurs - the IVC and aortic wall integrity appears preserved.
Conclusion: Appearances are consistent with two discrete large extra-adrenal phaeochromocytomas (paragangliomas).