The first Symposium on iammary Pathology organized by the International Society against Breast Cancer was held in Paris on December 3-7, 1979. The programme was divided into sections with morning lectures on current topics in mammary pathology given by invited speakers, followed by discussions, and, in the afternoon, emphasis on practical work, such as slide seminars, technical explanations of tissue and cell preparations for histology, cytology, electron microscopy and tissue culture work. The morning sessions were held at the Racing Club of France, 5 rue Eble, 75007 Paris and the organizers...