Breast radiography using the oblique projection

For 3,058 consecutive women who underwent film-screen mammography, oblique, mediolateral, and cephalocaudal images were obtained. Eighty neoplasms were identified. The oblique view disclosed all but one of the cancers; for six patients, it was the only projection that depicted a lesion in the upper-outer quadrant of the breast. Therefore, a two-view mammographic examination should consist of an oblique and cephalocaudal projection.