Sometimes the most effective way to treat a malignant tumor is to surgically excise (remove) the diseased tissue. A general surgeon may be chosen for this task when the cancer is present in the breast, gastrointestinal (GI) tract, liver or endocrine system, and potentially for melanoma and sarcoma as well. Once the tumor has been removed, additional therapies may be recommended to lower the chance of recurrence. These treatments may include radiotherapy, chemotherapy, or ultrasound or laser surgery. Early detection and the latest techniques and technologies are used to achieve the best possible outcome.