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• Morbid obesity and its comorbidities negatively influence both transplant candidates and transplant recipients. • Bariatric surgery may be a conduit for solid-organ transplant in patients with morbid obesity with end-staged solid-organ disease. • Bariatric surgery may prevent some patients from requiring liver transplant and may favor transplant in cases of obesity. • Bariatric surgery is feasible before, during, and after liver transplant. • Bariatric surgery is related to better results in kidney transplant, with less primary graft dysfunction and better graft survival. • Bariatric surgery also may improve results in cardiac and lung transplant candidates. Morbid obesity and being overweight are a growing problem worldwide. They also affect patients with end-stage solid-organ disease and patients after transplant. Bariatric surgery is the most effective available weight loss procedure. Bariatric surgery can be helpful for the treatment of some conditions, such as nonalcoholic fatty liver disease or nonalcoholic steatohepatitis, which may lead to transplant, and weight loss can improve or even reverse them. In other cases, morbid obesity is a limitation to accessing a transplant program, so bariatric surgery can serve as a conduit to transplant. After transplant, obesity and obesity-related comorbidities can be a significant health problem that may be treated, as in patients without a transplant, with bariatric surgery. There are some specific conditions and issues to be considered in patients with end-stage solid-organ disease who are candidates for bariatric surgery, such as increased morbidity and mortality. After transplant, immunosuppressant regimens and technical limitations may be also significant. [ABSTRACT FROM AUTHOR]

• Retained foreign bodies may cause severe complications. • Gossypiboma should be removed in all cases. • Conservative treatment for retained foreign bodies may cause complications at any time. • Prevention for retained foreign bodies is mandatory. Even in modern surgery, human mistakes cannot be totally avoided. Retained surgical items are among the most feared ones. Forgotten sponges inside patients can cause a wide range of complications due to the foreign body reaction, called gossypiboma. The incidence of gossypibomas in the literature is probably underreported due to its legal implications; however, we must know its consequences and highlight the importance of the prevention strategies. We present a case where only preventive measures would have avoided its fatal outcome. An 85-year-old male, previous left nephrectomy 12 years before, came to the emergency room with hematochezia and hemodynamic instability. An emergent angio-CT revealed a 12 cm mass due to a gossypiboma near the descending colon; the presence of air suggested an infection and/or fistulization to the bowel. It was decided not to perform invasive procedures, resulting in the patient's death. Gossypibomas can remain asymptomatic for years, being diagnosed when causing an obstruction, malabsorption, septic symptoms or even spontaneously. This may lead to high morbidity and mortality rates. In order to prevent it, different strategies have been described, with the objective to intensify surveillance. When diagnosed, laparotomy, laparoscopic and even endoscopic procedures have been performed successfully. We suggest putting all our efforts in identifying high risk patients and surgeries, training the OR team and enhancing protocols and checklists to minimize any preventable errors. [ABSTRACT FROM AUTHOR]