Proliferative and malignant Brenner tumours (BT) and their differentiation from metastatic transitional cell carcinoma of the bladder: a case report and review of the literature.

Up to now 110 cases of malignant Brenner tumour (BT) and 45 cases of proliferative BT have been reported in the accessible literature. To delineate the diagnostic criteria and to determine the differences between these tumours and metastatic tumours of the urinary tract, 94 cases of malignant BT and 37 cases of proliferative BT were reviewed. The difficulties encountered in determining these differences are illustrated by means of a case history.