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76±1.07 vs. 2.53±1.11 NRS, P less then 0.001; 48 hours, 0.84±0.85 vs. 2.16±0.85 NRS, P less then 0.001). Conclusion Periumbilical infiltration of bupivacaine has a longer acting efficacy on reducing postoperative surgical pain than that of lidocaine.Objective To evaluate the clinical and pathological characteristics of lower anterior abdominal wall masses suspicious for endometriosis. Methods A retrospective review of 38 patients who underwent surgery for a lower anterior abdominal wall mass suspicious for endometriosis was performed. Those with skin and in