Simultaneous pancreas and kidney transplantation is major surgery, involving quite big laparotomy and dissection. Generally, large laparotomy and major open surgery is considered to be relative (even absolute) contraindication to laparoscopy.
On the other side, laparoscopic surgery is associated with less incidence of postoperative complication compare to open approach. This benefit is even more significant in transplant patient. These patients, due to extensive co-morbidity and immunocompromised status are known to have higher incidence of postoperative complications.
Therefore, there is dilemma if in the case of need to remove gallbladder or any other elective surgery, laparoscopic option should be considered.