The multidisciplinary dimension which imposes the follow up of patients suffering from breast cancer raises difficulties of communication between community and hospital practitioners. The aim of this study was to assess information needs and expectations when the general practitioners and private gynecologists on one hand, and the hospital practitioners on the other hand, exchange medical information in the follow up of patients suffering from breast cancer. This descriptive study included a sample of 225 general practitioners and 216 gynecologists in private practice, and 233 hospital practitioners in the Rhone-Alps French region. Response rate was respectively 68 % (153), 64 % (139) and 42 % (99). This study showed different perceptions on the frequency of shared documents (reports, letters) or phone calls according to the speciality. In spite of a strongly felt partnership, an expectation of change was found with notably the wish of a stronger implication in the follow up and the wish to receive numerous information concerning the patients. The community practitioners expected to be more aware of the stage of the cancer, the prognosis and the level of information given to the patients. The hospital specialists expected to be informed about psychological problems or comorbidity. Pending the generalization of an electronic shared medical records, the experiment of a patient-held records may help to fulfil these expectations.