The aim of this paper is to report the risk of development of gynecolo
gical cancer in women receiving hormone replacement therapy and to rev
iew the current knowledge on the administration of hormone replacement
therapy following treatment of gynecological cancer. Estrogens alone
may act as promoting factors for endometrial carcinogenesis. However t
he addition of progenestins reduces the risk of endometrial cancer to
that of nonusers. Hormone replacement therapy could be given to select
ed patients following treatment for endometrial cancer. However we thi
nk that this therapy should be reserved only for patients enrolled in
controlled clinical trials. Ovarian cancer does not seem to be sensiti
ve to estrogens, even if current literature does not allow firm conclu
sions to be drawn. Hormone replacement therapy should be offered to pa
tients previously treated for ovarian cancer and cervical cancer.