Risk factors of 131I-induced salivary gland damage in thyroid cancer patients

Brynn Hollingsworth, Leigha Senter, Xiaoli Zhang, Guy N. Brock, Wael Jarjour, Rebecca Nagy, Pamela Brock, Kevin R. Coombes, Richard T. Kloos, Matthew D. Ringel, Jennifer Sipos, Ilene Lattimer, Ricardo Carrau, Sissy M. Jhiang

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


Context: Sialadenitis and xerostomia are major adverse effects of 131I therapy in thyroid cancer patients. The risk factors for these adverse effects, other than administered activity of 131I, have not been investigated. Objective: The aim of this study is to identify risk factors for 131I-induced salivary gland damage among follicular cell-derived thyroid cancer patients. Design: We enrolled 216 thyroid cancer patients who visited The Ohio State University Wexner Medical Center between April 2013 and April 2014. Symptoms of xerostomia and sialadenitis were identified via questionnaire and medical record search. To validate the findings in a large cohort, we retrospectively searched for ICD-9/10 codes for sialadenitis, xerostomia, and autoimmune disease associated with Sjögren's syndrome (AID-SS) in our existing database (n=1507). Demographic and clinical information was extracted from medical records. Multivariate analyses were performed to identify independent predictors for salivary gland damage. Results: 131I treatment associated with higher incidence of xerostomia and sialadenitis. Patients with xerostomia had 46 mCi higher mean cumulative 131I activity and 21 mCi higher mean firstadministered 131I activity than patients without xerostomia. Increased age associated with higher incidence of xerostomia, and females had a higher incidence of sialadenitis. Patients who experienced sialadenitis before 131I therapy had higher sialadenitis incidence after 131I therapy. 131Itreated patients diagnosed with AID-SS, whether before or after 131I treatment, had a higher incidence of xerostomia and sialadenitis among 131I-treated patients. Conclusion: Risk factors for 131I-induced salivary gland damage include administered 131I activity, age, gender, history of sialadenitis before 131I treatment, and AID-SS diagnosis. (J Clin Endocrinol Metab 101: 4085-4093, 2016).

Original languageEnglish (US)
Pages (from-to)4085-4093
Number of pages9
JournalJournal of Clinical Endocrinology and Metabolism
Issue number11
StatePublished - Nov 2016
Externally publishedYes

ASJC Scopus subject areas

  • Endocrinology, Diabetes and Metabolism
  • Biochemistry
  • Endocrinology
  • Clinical Biochemistry
  • Biochemistry, medical


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