[Tuberculosis of the female breast: diagnostic clarification]

Modern therapeutic possibilities made tuberculosis of the breast a rare entity which, however, still exists and usually mimicks a malignancy. It represents a secondary organ manifestation and should be considered in differential diagnosis in all cases of primary lung tuberculosis and when fine needle biopsy fails to yield the expected tumour cells. We demonstrate such a case of breast tuberculosis and stress the cytologist's option to restain any cytological slide according to Ziehl-Neelsen. In our case, this renewed staining established the correct diagnosis.