The surgical device is called a morcellator, and it is produced by five companies, including Johnson & Johnson. The surgeon inserts the morcellator into the uterus through a small incision. Its blades chop up the tissue so it can be removed through the same tiny incision. What they are finding, however, is that when women have an undiagnosed cancer, a uterine sarcoma, the cancerous tissue also gets divided and may spread malignant cells throughout the abdomen and pelvis, “significantly worsening the patient’s likelihood of long-term survival.”