[Magnetic resonance in the staging of bladder neoplasms: results of the use of JKA1, a ferrous contrast solution]. / La RM nello staging delle neoplasie vescicali: risultati dell'uso del JKA1, soluzione ferrosa contrastografica.

ABSTRACT

The authors report the results of the staging of urinary bladder cancers by means of MRI using a new ferrous contrastographic solution called JKA1. Eighteen patients with proved bladder neoplasms were examined by means of MRI the bladder was filled with physiological solution first, and then with JKA1. Six patients were studied also after filling their bladders with Gd-DTPA solution (150). The results show that the use of JKA1, a T2-positive contrast medium, improved MR capabilities in the evaluation of small lesions (phi less than 1 cm) with minimal invasion of bladder wall; MR staging accuracy was 66.6% with the physiological solution and 77.8% with JKA1. The authors confirm the need for a wider MR study, in particular of T2 lesions (a critical subject for staging and surgical management) to assess MR diagnostic capabilities.