[Early and "latent" breast cancer]

The results of microscopic study of the material obtained from 71 cases of clinically-occult cancer of the breast are reported. Generally, metastases into axillary lymph nodes are primary clinical manifestations. A histological description of dysplasia and preinvasive cancer of the breast is presented. Metastatic spreading in regional lymph nodes unaccompanied by microscopically-detectable invasive tumor growth is discussed.