Minimally invasive surgery is guided by ultrasound with a spiral knife to remove the mass, can not see whether the local bleeding symptoms can only rely on the pressure, the spiral knife to remove the mass of the process accompanied by bleeding, bleeding will cause subcutaneous bruising, in this case can only rely on the pressurized bandage to stop the bleeding, the pressurized bandage process is also a process of compression will cause the skin to bruise the skin manifestations, there may also be occasional depression of the skin caused by the tumor. These cases do not matter as long as you make sure that the ultrasound: 1, the tumor resection is complete; 2, there is no hematoma under the skin can be. Bruising can be localized hot compresses will disappear in a month or so.