[Intraperitoneal chemotherapy for ovarian adenocarcinoma: pharmacokinetics of cisplatin]

Chemotherapy using cis dichlorodiamine platinum (CDDP) in doses of 30 and 60 mg/m2 was carried out in 6 patients who had adenocarcinoma of the ovary, that had not been treated before, 15 to 120 minutes before surgery was carried out. The results of doses of platin given on the blood levels are demonstrated. A slight and progressive increase in the plasma levels of CDDP with peaks between 0.6 and 1.95 of total platinum and 0.22 mcg/ml of free platin were found. The tissue levels in the region of the ovaries were found to be between 0.16 and 0.94 mcg/mg. There was a stepwise increase in the levels found in the pathological peritoneal cover of between 0.42 and 31.2 mcg/mg. This dropped as time went by; and then led to change in accordance with the intra-peritoneal concentrations. This study shows that it is possible when giving drugs intraperitoneally to avoid high plasma peaks and to obtain good levels of concentration of cisplatin in the peritoneum.