Background
postoperative pain, cancer, Breast cancer, pain, Erector spinae block
POSTMASTECTOMY PAIN SYNDROME, POSTOPERATIVE COMPLICATIONS, CHRONIC PAIN SYNDROMES, CANCER, BREAST CANCER
Breast cancer is the most prevalent cancer among women. Postmastectomy pain syndrome (PMPS) is one of the most common postoperative complications that requires effective and safe management [Erector spinae block (ESB) is a relatively new technique used to manage acute postoperative pain in different surgeries, as well as chronic pain syndromes. Although its mechanism is not fully understood and most publications consist of case reports and personal clinical experiences, the available data agree on its simplicity and safety compared to bilateral paravertebral blocks or thoracic epidural blocks [ESB can be performed using either the superficial technique, located between the large rhomboid muscles and the erector spinae muscle, or the deep technique, beneath the erector spinae muscle [In this study, we aimed to determine the vertebral levels reached by two different volumes (20 ml and 30 ml solutions) in the erector spinae block (ESB), as well as assess pain improvement and patient satisfaction in females with postmastectomy pain syndrome.