This paper reports a retrospective multi-institutional French survey carried out in 1992 to determine the incidence of laparoscopic management of malignant ovarian cysts. Of 5307 ovarian lesions treated endoscopically, 78 were malignant (1.47%) including 60 borderline tumours (77%) and 18 ovarian cancers (23%). Laparoscopic treatment was puncture in 23% of cases, partial exeresis in 51% and total removal in 26%. Laparotomy was immediately performed in 25% of the cases and as a second stage procedure in 58% (mean delay: 78 days). Laparotomy was not performed in 16% of the cases. Our findings suggest that laparoscopic management of ovarian lesions that subsequently prove to be malignant is not uncommon. To prevent the risk of metastasis, thorough pre-operative and per-operative evaluation is mandatory. In 22.4% of the patients presenting lesions in this study, laparoscopic tampering resulted in an upgrading of FIGO stage.