Between 1975 and 1989 we carried out a total of 567 resections of the
colon and rectum and performed a uni- or bilateral ovarectomy in 53 (9
.3 %) cases. Histopathological findings in the case of 41 (7.2 %) pati
ents were unremarkable whereas 8 cases (1.4 %) revealed metastases of
the colorectal cancer. In the case of 4 patients (0.7 %) synchronous o
varian cancer occurred. According to the TNM-scheme primary tumors inc
luded T2 in 2 cases, T3 in 5 and T4 in 1 of the cases. Reported figure
s of ovarian metastases in colorectal cancer vary between 2.0 and 10.3
%, we found 2.1 % in our series. Prophylactic ovarectomy even in prem
enopausal patients is indicated if one or both ovaries show pathologic
al findings on laparotomy since infiltrative growth of the tumor can b
e proved only histologically. In addition we performed bilateral oopho
rectomy on postmenopausal women as a method of preventing occurrence o
f other ovarian tumors.