Cellvizio to Evaluate Margins in Crohn's Ileal Disease

During surgery an intravenous injection of fluorescein will be performed. The surgeon will, then, evaluate the ileal section margins on the mucosa, the serosa and the mesentery to evaluate if the section margin in microscopically inflammatory or not. She/he will then evaluate (in cm) the length between this section margin and the theorical section margin to be on a non-inflammatory tissue on the mucosa, serosa and mesentery. The data will be filled during surgery, blind from the pathological analysis. The pathological analysis will also be blind from the Cellvizio data. A video collection will be performed anonymously.