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Sialographic Analysis of Radioiodine-Associated Chronic Sialadenitis
Journal article   Open access   Peer reviewed

Sialographic Analysis of Radioiodine-Associated Chronic Sialadenitis

Ryan K Thorpe, Megan J Foggia, Kathryn S Marcus, Bruno Policeni, Joan E Maley and Henry T Hoffman
The Laryngoscope, Vol.131(5), pp.E1450-E1456
05/2021
DOI: 10.1002/lary.29279
PMCID: PMC10049839
PMID: 33200832
url
https://pmc.ncbi.nlm.nih.gov/articles/PMC10049839/pdf/nihms-1881683.pdfView
Open Access

Abstract

To apply a novel sialography classification system to identify parotid and submandibular ductal findings following I-131 therapy and to assess correlates to dose and duration of symptoms. Retrospective single-center case series. Patients who underwent sialography between February 2008 and February 2019 after previously receiving I-131 treatment were identified via a retrospective chart review. Their sialograms were systematically evaluated and scored by applying the Iowa parotid sialogram scale to also include submandibular gland analysis. From 337 sialograms, 30 (five submandibular, 25 parotid) underwent analysis. Ductal stenosis was identified in all sialograms and was graded as moderate (>50%-75%) in 7/30 cases and severe (>75%) in 15/30 cases. The distal (main) duct was narrowed in 23/30 cases. No association was identified between degree of ductal stenosis and I-131 dose (P = .39), age (P = .81), or time from I-131 therapy to sialogram (P = .97). The Iowa parotid sialogram scale was successfully applied to report abnormalities of the parotid and submandibular ductal system. The most common manifestation of I-131-associated sialadenitis was a severe stenosis within the distal salivary duct. No statistically significant association was found between degree of ductal stenosis and dose of I-131, age, or duration of symptoms. 4 Laryngoscope, 131:E1450-E1456, 2021.
Adult Aged Dose-Response Relationship, Radiation Female Humans Iodine Radioisotopes - administration & dosage Iodine Radioisotopes - adverse effects Male Middle Aged Parotid Diseases - diagnosis Parotid Diseases - etiology Parotid Gland - diagnostic imaging Parotid Gland - radiation effects Radiation Injuries - diagnosis Radiation Injuries - etiology Radiotherapy Dosage Retrospective Studies Salivary Ducts - diagnostic imaging Salivary Ducts - radiation effects Sialadenitis - diagnosis Sialadenitis - etiology Sialography - statistics & numerical data Submandibular Gland - diagnostic imaging Submandibular Gland - radiation effects Submandibular Gland Diseases - diagnosis Submandibular Gland Diseases - etiology Thyroid Diseases - radiotherapy Young Adult

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