[Significance of the exfoliative cytodiagnosis in cases of Paget's disease of the nipple (author's transl)].

8 cases of Paget's disease of the nipple were diagnosed by means of cytological examination: in 6 patients by exfoliative, in 2 patients by aspiration biopsy cytology. The diagnoses were verified histologically. Early exfoliative cytology is recommended for early diagnosis in all cases of Paget's mamillae. This method is quick, safe, easily to be carried into effect and to apply repeatedly; but, if the process is suspected of malignancy, a trial-excision has to be carried out. A well-trained cytologist rarely needs the latter. This simple method will reduce the development of advanced Paget's disease.