VARIOUS techniques for the cannulation of Stensen's duct in the performance of parotid sialography have been utilized. The majority rely on dilatation of Stensen's duct with lacrimal duct dilators prior to definitive cannulation. Few, if any, find the necessity for the application of topical or local anesthesia. Einstein and Perzik1 utilize a short blunt needle (20-23 French) attached to a syringe (Luerlock) for cannulation of the dilated duct and instillation of radiopaque solution. After injection, the needle is removed before roentgenograms are taken. Ross and Castro2 utilize a blunt silver needle for the same purpose. Others, including the Head and Neck Service at the Los Angeles Veterans Administration Hospital, insert polyethylene tubing which is taped to the face in the examining room. The patient is then transported to the radiology department for instillation and films.
All of the above techniques have their place and usually yield good