Introduction
The Royal College of Radiologists Breast Group has recently brought out a breast imaging classification system to ensure clear communication regarding the likelihood of malignancy within breast lesions and the need for further investigation to establish a definite diagnosis. The R3 category is used for indeterminate/probably benign findings, where there is a small risk of malignancy and further investigation in the form of further imaging and usually biopsy is required. Our aim was to audit symptomatic imaging in a large teaching hospital to ensure: lesions classified as R3 were appropriately managed; and lesions diagnosed as malignant on histopathology were not inappropriately categorised as R3 on imaging.