Fig. 4

Histopathologic features of anastomosing hemangiomas published in the English literature. a Characteristics associated with end-stage renal disease. Almost two thirds of renal anastomosing hemangiomas have been reported in patients with compromised renal function, most in end stage renal disease (ESRD; on the left). Almost two thirds of these cases were accompanied by acquired cystic kidney disease (ACKD). All multifocal lesions have been reported exclusively in patients with compromised renal function (Fischer exact test p = 0.0095, on the right). b Comparison between renal and extra-renal lesions. Renal and extra-renal anastomosing hemangiomas show similar histologic features. # indicates characteristics not studied, or not reported in extra-renal lesions. Asterisk indicates characteristics statistically significantly more frequently observed in renal lesions (Fischer exact test p = 0.03 and p = 0.006)