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Does lemon candy decrease salivary gland damage after radioiodine therapy for thyroid cancer?

Kunihiro Nakada1, Tetsuya Ishibashi, Toshiki Takei

  • 1Department of Nuclear Medicine, Hokkaido University Graduate School of Medicine, Sapporo 060-8636, Japan. metnakada@yahoo.co.jp

Journal of Nuclear Medicine : Official Publication, Society of Nuclear Medicine
|February 8, 2005
PubMed
Summary
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Starting lemon candy early after radioiodine therapy significantly increases salivary gland damage. For patients undergoing thyroid cancer treatment, delay lemon candy use until 24 hours post-therapy to mitigate side effects like dry mouth.

Area of Science:

  • Oncology
  • Nuclear Medicine
  • Salivary Gland Health

Background:

  • Salivary gland dysfunction is a common adverse effect of high-dose radioiodine therapy for thyroid cancer.
  • This dysfunction can significantly impact patients' quality of life.

Purpose of the Study:

  • To investigate whether initiating lemon candy consumption early after radioiodine therapy affects the incidence and severity of salivary gland injury.
  • To determine the optimal timing for lemon candy use to minimize post-therapy salivary complications.

Main Methods:

  • A prospective, longitudinal study comparing two groups of differentiated thyroid cancer patients post-surgery.
  • Group A patients started sucking lemon candy within 1 hour post-radioiodine administration, while Group B delayed for 24 hours.

Related Experiment Videos

  • Salivary gland side effects were monitored using patient interviews, visual analog scales, and salivary gland scintigraphy.

    • Main Results:

    • Group A showed significantly higher incidences of sialoadenitis (63.8% vs. 36.8%), hypogeusia (39.0% vs. 25.6%), and dry mouth (23.8% vs. 11.2%) compared to Group B.
    • Permanent xerostomia occurred in 14.3% of Group A patients versus 5.6% in Group B.
    • Bilateral parotid gland involvement was most common, followed by bilateral submandibular gland involvement in both groups.

    Conclusions:

    • An early initiation of lemon candy sucking (within 1 hour) after radioiodine therapy is associated with increased salivary gland damage.
    • It is recommended to withhold lemon candy until at least 24 hours after radioiodine administration to reduce the risk of salivary gland injury.