Incidence of renomedullary interstitial cell tumours and correlation with hypertension.

In a study of 223 consecutive autopsies of subjects older tumours were found in 36 cases (16%) (25/130 males and 11/93 females). Only eight kidneys showed multiple lesions. Renomedullary interstitial cell tumours were correlated with the presence or absence of hypertension and no statistically significant correlation could be demonstrated. The incidence of renomedullary interstitial cell tumours increases with age.