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Current status of sialography.

1. Sialography is a valuable diagnostic procedure in the work-up of disease conditions of the major salivary glands.2. A complete sialographic examination should include 3 stages:a. Filling stage performed under fluoroscopic control and spot filmed during the initial visualization of the duct systemb. Parenchymal opacification stage for the study of the gland parenchyma beyond the duct systemc. Postevacuation stage for the study of secretory activity of the gland and to detect any destruction of the walls of the duct system or the acini.3. The validity of currently accepted diagnostic criteria is again confirmed. In addition, the significance of lack of acinar opacification is stressed.