Local hard lumps after minimally invasive treatment of the breast are divided into the following cases: First, not cleanly excised: the lumps may not be completely excised. For lumps that are relatively small and not particularly obvious under ultrasound examination, there may be residues in the process of excision, so resulting in local lumps. It is suggested that patients can do breast ultrasound review, which also includes physical examination, etc. Second, local bleeding: After minimally invasive treatment, if there is local bleeding, it will lead to hard lumps at the traumatized area. Generally, the condition can be found when doing breast ultrasound examination, and it is suggested that patients can adopt conservative treatment and wait until the local bleeding is completely absorbed by the patient, and the hard lumps can disappear. Thirdly, other cases: it may be local edema or local ooze, which is the lightest case, and the hard lump may be eliminated by itself after observing for a period of time.