A breast lump is not necessarily a tumor, but tumors often manifest as breast lumps. Therefore, if a breast lump is found, it is important to seek medical attention as soon as possible, regardless of whether it is accompanied by other symptoms such as pain. In addition to breast tumors, hyperplasia, inflammation, fat necrosis, etc. can also manifest as breast lumps. Breast lumps must be found by pressing the index, middle, and ring fingers together, while “lumps” found by grasping and pinching are often glandular.