Usefulness of Magnetic Resonance Sialography for the Evaluation of Radioactive Iodine-Induced Sialadenitis

Abstract

MR sialography images are useful for evaluating RAI sialadenitis, and its findings are in accordance with disease severity. An MR sialographic grading system is suggested to describe the severity of obstructive sialadenitis and SG dysfunction.

Clinical outcomes and prognostic factors of sialendoscopy in salivary duct stenosis

“…A single stenotic lesion of focal type on MR sialography showed better prognosis of patients after sialendoscopic procedures; resolving lesions throughout the entire duct is challenging, especially in stenosis of multiple or diffuse regions. Our results are in accord with those of an earlier study, which suggested that the stenosis type of MR sialography is significantly associated with disease severity of the duct in radioiodine‐induced sialadenitis …”

“…MR sialography has the virtue of visualizing ductal systems in cases of complete obstruction of a distal duct, differently from conventional sialography . It is useful in evaluating preoperative ductal pathology and can allow functional evaluations of SGs using a sialogogue .…”

“…Our results are in accord with those of an earlier study, which suggested that the stenosis type of MR sialography is significantly associated with disease severity of the duct in radioiodine-induced sialadenitis. 14 Sialendoscopy enables a more detailed and direct assessment of stenosis and offers the possibility of conducting effective treatment at the same time. Thus, sialendoscopic grade might prove more clinically useful, compared to parameters of other tools, for prognostic prediction.…”

“…). Gland volume was classified as grade 1 = normal, grade 2 = gland swelling (larger than normal), and grade 3 = gland atrophy (smaller than normal) …”

Cost‐effectiveness of sialendoscopy versus medical management for radioiodine‐induced sialadenitis

“…Symptoms include gland swelling, dysphagia, tenderness, pain, and xerostomia. Diagnostic sialography utilizing ultrasound, magnetic resonance (MR), and computed tomography (CT) has been shown to be a useful adjunct to patient symptoms, though each is limited by facility availability, cost, and physician expertise …”