2nd look operation. Second look, means your surgeon plans to look inside a second time. At the first operation not all the surgical issues were settled. Swelling, pressure, blood flow, abdominal compartment, tissue viability, infection, bleeding disorders are all reasons to stage or plan a second look operation. Okay to ask your surgeon the reasons.
Repeat surgery. "second look" laparoscopy is a term that usually refers to repeat surgery done following treatment for (usually) ovarian cancer. The cancer is initially staged and treated with the first surgery; then chemotherapy is administered. A second look is done to look for any residual disease after chemo.