Fig. 1

Radiological and histopathological images for the myxoma case. a Enhanced computed tomography scan shows severe right sided hydronephrosis with ballooning of the renal pelvis and thinning of the renal cortex, a faint thin curvilinear wall seen abutting the dilated calyces (arrows). b Low power view of an ill-defined myxoid lesion with overlying unremarkable urothelium at the upper right (Hematoxylin and eosin 40X); the insert shows a medium power of spindle / stellate cells with no atypia and a myxoid background. c Low power view showing infiltration of the tumor into the muscularis propria (Hematoxylin and eosin 40X). d Medium power view showing positive staining of the tumor cells for vimentin immunostain (200X)