The authors report a series of 434 patients with invasive cancer of the uterine cervix treated with primary surgery. The results are equivalent to those reported by others who treated cervix cancer with radiotherapy. Post-operative radiotherapy did not improve the results except in the most advanced forms (pT2b, pN1 or 2) when it increases the disease-free interval without altering the survival probability at 5 years. For the clinical stages I, IIA and IIB proximal (infiltration of the parametrium limited to the proximal part) surgery is the elective treatment. In stage IIB distal and for "operable" Stages III and IV, a combination of chemotherapy-surgery and radiotherapy is suggested.