Breast lumps are common and usually benign, but understandably may cause significant anxiety for the patient. Comprehensive assessment, involving clinical examination, imaging and biopsy, are required for definitive diagnosis. For two reasons – breast lumps are a high risk presentation, and registrars are likely to have limited clinical experience during their hospital training –supervisors must ensure registrars are competent in the assessment and management of breast lumps. Additionally, registrars need to know the benefits, risks and practicalities of breast cancer screening.