What is a Trans-nasal Oesophagoscopy?
Trans-nasal Oesophagoscopy (TNO) is a diagnostic procedure similar to conventional Oesophagoscopy/Gastroscopy, in that a flexible tube with a video-camera at it’s tip is passed into the upper digestive tract, and travels down through the pharynx, oesophagus, and into the stomach. It has the ability to take videos & images, to take biopsies, and perform minor therapeutic procedures.
Unlike conventional flexible Oesophagoscopy/Gastroscopy, with TNO, the tube is passed through the nose, rather than the mouth. Also the TNO procedure is performed under local anaesthetic only, meaning no sedation is required.
The MSAC team may recommend a TNO to further evaluate your swallowing problem. A TNO will be performed by the ENT Surgeon / Laryngologist from the MSAC team. It is particularly useful in directly visualizing the lining of the oesophagus and stomach, an area not seen on nasendoscopy at your consultation, and only indirectly seen on Videofluoroscopy, or CT scanning. Another advantage is that any areas of interest can be biopsied during a TNO, and certain therapeutic procedures such as balloon dilation of a stricture or narrowing, or an injection of botox into a muscle can be performed. Patients are generally instructed to fast (have nothing to eat or drink) for 3 hours prior to the procedure. After the procedure, and a brief period of observation, they are free to leave, drive themselves home and/or return to work the same day. The procedure is generally very well tolerated and safe. However, the specific risks and benefits of a TNO in your particular situation will be extensively discussed with you during your MSAC consultation.
