mammectomy

例句：

1. 1.The patient underwent a mammectomy toremove the cancerous lump.
   患者接受了乳房切除术，以切除癌瘤。
2. 2. The surgeonperformed a mammectomy on the patient's breast.
   外科医生在患者乳房上进行了乳房切除术。
3. 3. Mammectomy isa common procedure for treating breast cancer.
   乳房切除术是治疗乳腺癌的常见方法。