The first clinical objective of a woman who finds a breast lump on self-examination at home and seeks medical attention is to clarify whether it is breast cancer. Doctors will determine malignant lumps or benign lumps based on clinical symptoms and imaging examinations. If a woman finds a breast lump on self-examination, she can pay attention to the size, location and relationship of the lump to the surrounding tissues. Women who have not been instructed by medical professionals lack the skills to examine their own breast lumps. Therefore, when you find a lump in your breast in the shower or other times, do not be nervous and go directly to the hospital to see a specialist who will do a detailed physical examination and combine it with mammogram, breast ultrasound or breast MRI for a comprehensive judgment.