Abstract
The wide spread of the serratus posterior superior intercostal plane (SPSIP) block in the hemithorax and axilla suggests it can provide sufficient postoperative analgesia for breast cancer surgery. This case series aims to present the data of five patients who underwent SPSIP block. Patients received preoperative SPSIP block as part of a multimodal analgesia protocol. Our findings indicate that Numeric Rating Scale pain scores remained below 3/10 in all patients, the time to mobilization was shortened, and postoperative opioid requirements were minimal. These data indicate that the SPSIP block might be an efficient choice for pain control in breast cancer surgeries.