Highlights Bariatric surgery represents one of the greatest success stories in modern medicine. Improving the management and the result in those cases in which revision surgery is needed. Laparoscopic conversion of OAGB to RYGB as a safe method.

Highlights Infections in isolated liposuction procedures are reported as only 0.1 % of cases One of the most serious complications of liposuction is necrotizing soft tissue infection (NSTI). Rapid recognition of NSTI is life saving; with urgent extensive debridement and prophylactic antibiotics as the mainstay of treatment for this condition

Highlights Schwannomas are neural crest tumors. Incidence extremely rare in the retroperitoneum. Inmunochemistry is needed for final diagnosis.