“…In 1960 Dohlman incorporated to the technique of rigid endoscopy 2 , a speculum with esophageal cleft in the distal end. Collard in 1993 published a technical modification of this procedure 3 , which uses a speculum with independent shafts, using a stapler for section of the septum. In Brazil, the flexible endoscopic technique was presented by Prof. Sakai, member of Prof. Ishioka´s team, in 1982.Their experience was internationally published in 1995 4 .…”