Objective: Stilboestrol phosphate (ST 52) was evaluated on pain, gener
al status, life expectancy and PSA, in a retrospective study of patien
ts with prostatic carcinoma and relapse to hormonal treatment. Materia
l and methods: 32 patients were treated by infusion of Stilboestrol ph
osphate at a daily escalating dose from 1.2 to 3 g over a period of 10
days, then subsequently oral administration, Results, Minor complicat
ions, especially nausea were observed in 12 cases but no major complic
ation or interruption of treatment. Improvement for pain alone or with
general status was obtained in 50% (16 cases) at 3 months, but at one
year only 10% were still improved. Median survival was 8 months, with
19.4 months for responders at the end of infusions and 4.2 months for
non-responders-respectively. Conclusion: Stilboestrol phosphate can o
btain a clinical response with low morbidity when relapse to hormonal
treatment occurs. Infusion responders have a better life expectancy.