[The usefulness of cytodiagnosis in nonpalpable breast lesions].

The paper underlines the importance of early diagnosis in the treatment of breast tumours and emphasises the value of cytodiagnosis as a very sensitive and specific predictive method for detecting impalpable lesions. In conclusion, the Authors affirm that cytodiagnosis, together with the introduction of new diagnostic instruments such as the TRC Mammotest, allows the diagnostic and therapeutical approach to impalpable breast tumours to be improved. It adds to the already high sensitivity of mammography and to the high predictive specificity of cytology, thus contributing to the reduction of the so-called "bioptic cost".