Early Detection of Mucosal Abnormalities in Graft-versus-host Disease

"The probe is a miniaturized microscope in the form of a fiber which is inserted through the endoscope and brought into contact with the mucosa. It thus allows for a live virtual biopsy, that is to say, obtaining real-time microscopic virtual image of the mucosa. It requires an intra-veinous injection of 5 mL of 10% fluorescein diluted in 50 cc of saline serum. The images obtained during the examination will be recorded via the endomicroscopy console so that two endoscopists blinded from the macroscopic and histological findings can review the data."