More and more western countries emphasize the necessity of introducing a periodical mammographic control for women above 35. Mammography is a radiologic examination involving a less strong exposure to radiation which shows the malignant lesions in an inchoative and advanced stage. The aim of the paper is to correlate the results of the mammographic screening with the morphopathological ones. Mammographic screening has been employed in 660 cases in Mures Radiology Clinic. 371 of these cases showed a normal aspect, at 84 patients benign lesions, at 76 microcalcifications and at 129 malignant lesions were found. Only 30 of these patients were posteriorly operated with or without the removal of the axillary gland. Out of 30 cases 13 were of breast cancer and in 17 cases a benign tumour was found. Mammographic screening is the most important method in diagnosing breast cancer at an early stage. This has to be applied to all women above the age of 35.