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Summary

Cis-dichlorodiammine platinum II (cisplatin) in high dose was given to 40 patients with advanced carcinoma of the ovary, 31 had been previously treated with alkyl-ating agents or various chemotherapy regimens excluding cisplatin and 9 patients had tumours resistant to low dose cisplatin regimens. The high dose regimen consisted of cisplatin given at 100 mg/m2 with 24 hours pre- and post-treatment hydration, at monthly intervals up to a maximum of 5 doses. Seventeen of the 31 patients (55%) showed a therapeutic response including 25% who had complete regression of tumour. The median duration of complete remissions was 10 months. Unfortunately, patients who had already been exposed to cisplatin at low doses (20 mg/m2) responded less well, only 2 out of 9 (22%). Even at this late stage of disease, seven patients showed a good enough response to undergo further surgery and of these three were macroscopically clear of tumour and in two patients multiple biopsy material failed to show residual tumour microscopically.