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[Local injection of high-dose CDDP to the advanced gynecological cancer].

We investigated the efficacy of local injection of high-dose CDDP. The subjects were 16 patients with advanced gynecological cancer or tumor recurrence, in whom systemic administration of CDDP was inadvisable because of advanced age or associated complications (12 cases of cervical carcinoma, 2 cases of endometrial carcinoma, 1 case of ovarian carcinoma, and 1 case of vulvar carcinoma). In 14 cases, CDDP was injected locally to the tumor mass, using a single dose of 50-300 mg. In 2 cases, a single dose of 10-20 mg of CDDP was infused into the uterine cavity. The effects of the therapy were evaluated by cytodiagnosis, tumor markers, CT, and performance status. In all cases, an antitumor effect was noted, and seven subjects survived for at least 24 months following these therapy with CDDP. One patient developed vesicovaginal and rectovaginal fistulae after local injection of CDDP following high-dose radiotherapy. We investigated the plasma concentrations of free and total platinum after CDDP application with doses from 60-200 mg/body. Plasma concentrations showed a biphasic pattern (phase alpha and phase beta), and the peak plasma concentration of CDDP was lower than that following intravenous administration of the same dose. From these results, it was suggested that a large dose of CDDP can be injected into the tumor tissue itself and the surrounding tissue with comparatively few side effects. It will be possible to administer large dose of CDDP in this way to the terminal patients to whom there is currently no other appropriate method of treatment. The performance status of our subjects was improved, and we expect that wider use of this method will improve the quality of life for end-stage patients.