[Malignant lymphopathy and breast cancer (apropos of 3 cases)]

Two cases of Hodgkin's disease were associated with a breast tumor after a remission of seven years. Conversely, another patient was affected by a mammary adenocarcinoma prior to the onset of an overt acute lymphoblastic leukemia in the same delay. These three observations focussed our attention upon the development of secondary neoplasias and the possible relationship between both types of disorders. In a period with extensive research on cancer etiology, it seemed interesting to discuss the role of several factors: genetic, therapeutic and/or immunological ones.