Paravertebral block and postoperative analgesia can reduce the risk of recurrence and metastasis in breast cancer patients during the initial years of follow-up after mammectomy [10].MMP-9 that is a member of the MMP superfamily plays an important role in many pathophysiological processes, such as bone development, wound healing, cell migration, cancer invasion and metastasis [13]. Here, MMP9 is linked to breast carcinoma.