The aim of this study was to estimate the possibilities of ovarian can
cer prophylaxis in the Republic of Croatia, expressed both as the abso
lute number of cases per year that could be prevented, and as the shar
e of preventable cases in a total number of diagnosed ovarian cancer c
ases. The prophylactic measures that are accepted and well-established
in the world literature include prophylactic ovariectomies in patient
s with family history of ovarian cancer (recommended at 35 years of ag
e), in those who underwent hysterectomy (40 years), or non-gynecologic
al laparotomy due to any cause (45 years, with patients approval). Ano
ther well-recognized prophylactic measure is the use of oral contracep
tives over the 4-5 year period, which reduces the risk of ovarian canc
er for about 40%. The estimation of the prevention potential was carri
ed out retrospectively on the sample of 500 patients treated for ovari
an cancer at the Department of Gynecological Oncology of the Universit
y Hospital for Gynecology and Obstetrics in Zagreb between 1980 and 19
90. The results of the study revealed a family history of ovarian canc
er prior to diagnosis in 15 (3.0%) patients, a hysterectomy prior to d
iagnosis in 36 (72%) patients, anal non-gynecological laparotomy prior
to diagnosis in additional 33 (6.6%) patients. Among these 84 (16.8%)
ovarian cancer cases, a total of 65 (13.0%) could have been avoided t
hrough the appliance of prophylactic ovariectomies, respecting recomme
nded age limits. Furthermore, if the share of the Croatian female popu
lation that regularly uses oral contraceptives reached the level of 12
.5% additional 5% of total ovarian cancer cases would be avoided. Thro
ugh the consequent employment of aforementioned prophylactic postulate
s, a total of 70 cases of ovarian cancer (18%) could be prevented each
year in the Republic of Croatia.