Forty six cases of suspected ovarian malignancies were evaluated by various laboratory methods

including chromosome and cytological studies of the peritoneal fluid or tumor mass

determinations of colorimetric response to Ehrich’s reagent in the serum

and serum LDH determinations. Among these patients

32 cases were finally diagnosed as ovarian cancers and the remaining 14 case-s proved to be benign pelvic diseases. The rates of accurate diagnosis by chromosome1 studies

cytological examinations

colorimetric response determinations and serum LDH determinations were 86. 96%

82.61%

70.0% and 64

26% respectively. It seems that chromosome study is the most reliable method for the diagnosis of ovarian cancer

and when.both chromosome and cytological studies are positive simultaneously

diagnosis of ovarian cancer can be established.