Scintigraphic evaluation of sialadenitis

Area of Science:

• Nuclear Medicine
• Radiology
• Otolaryngology

Background:

• Sialadenitis diagnosis often requires invasive procedures.
• Non-invasive imaging is crucial for effective sialadenitis management.

Purpose of the Study:

• To evaluate salivary gland scintigraphy as a primary diagnostic tool for sialadenitis.
• To correlate scintigraphic findings with clinical and histological data.

Main Methods:

• 32 patients with sialadenitis underwent salivary gland scintigraphy with 99Tcm sodium pertechnetate.
• Dynamic data acquisition with a sialogogue was used.
• Computer-derived functional parameters and activity-time curve morphology were analyzed.

Main Results:

• Scintigraphy successfully identified ductal stones in five patients (Type O curves).
• Parametric evidence of gland dysfunction, including hyperactivity, was found in seven symptomatic glands.
• Histology confirmed inflammation and fibrosis in relevant cases.
• Scintigraphy and plain films are recommended as primary investigation methods.

Conclusions:

• Salivary gland scintigraphy is a suitable primary method for investigating sialadenitis.
• Contrast sialography should be reserved for specific cases.
• Functional parameters for non-obstruction dysfunction are non-specific.