CT scan and ultrasound of pararenal paraganglioma

A CT scan performed on a 40-year-old female to assess a large pelvic mass confirmed the presence of a fibroid (arrow in A and coronal reconstruction in B) with the incidental finding of a pararenal mass (small arrowhead in A and B). The ultrasound (C) shows an isoechoic almost homogeneous mass (large arrowhead) impinging on the hilum of the kidney and causing mild hydronephrosis (dashed arrowhead). The Doppler ultrasound (D) shows minimal vascularity in the mass (thick arrow). The patient had elevated metanephrines and a diagnosis of paraganglioma was proven surgically.