A case of the accumulation of 131-iodine in the mammary gland after remnant ablation for papillary thyroid carcinoma on lactating period

Daisuke Murayama, MD; Yayoi Yamamoto, MD, PhD; Ai Matsui, MD; Mio Yasukawa, MD; Soji Toda, MD; Hiroyuki Iwasaki, MD, PhD

Radiology Case Reports (Nov 2021)

A case of the accumulation of 131-iodine in the mammary gland after remnant ablation for papillary thyroid carcinoma on lactating period

Daisuke Murayama, MD,
Yayoi Yamamoto, MD, PhD,
Ai Matsui, MD,
Mio Yasukawa, MD,
Soji Toda, MD,
Hiroyuki Iwasaki, MD, PhD

Affiliations

Daisuke Murayama, MD: Department of Breast and Endocrine Surgery, Kanagawa Cancer Center, 2-3-2 Nakao Asahi-ku, Yokohama, Kanagawa 241-8515, Japan; Corresponding author
Yayoi Yamamoto, MD, PhD: Department of Diagnostic and Interventional Radiology, Kanagawa Cancer Center, 2-3-2 Nakao Asahi-ku Yokohama, Kanagawa 241-8515, Japan
Ai Matsui, MD: Department of Breast and Endocrine Surgery, Kanagawa Cancer Center, 2-3-2 Nakao Asahi-ku, Yokohama, Kanagawa 241-8515, Japan
Mio Yasukawa, MD: Department of Breast and Endocrine Surgery, Kanagawa Cancer Center, 2-3-2 Nakao Asahi-ku, Yokohama, Kanagawa 241-8515, Japan
Soji Toda, MD: Department of Breast and Endocrine Surgery, Kanagawa Cancer Center, 2-3-2 Nakao Asahi-ku, Yokohama, Kanagawa 241-8515, Japan
Hiroyuki Iwasaki, MD, PhD: Department of Breast and Endocrine Surgery, Kanagawa Cancer Center, 2-3-2 Nakao Asahi-ku, Yokohama, Kanagawa 241-8515, Japan

Journal volume & issue: Vol. 16, no. 11
pp. 3442 – 3444

Abstract

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The accumulation of 131-iodine is known to occur in the extrathyroidal tissues, such as the salivary glands and the gastrointestinal tract during radioactive iodine therapy. It is considered to be due to the expression of sodium iodide symporter. A 36-year-old lactating female was treated for remnant ablation for papillary thyroid carcinoma (pT1bN1bM0 pStage I) on the condition that she refrained from breastfeeding and was separated from her child and was milked to promote the excretion of 131-iodine until the accumulation disappeared on scintigram imaging. Scintigram showed the decrease and disappearance of the 131-iodine accumulation and the external dose rate was measured and confirmed to have decreased on the day 7 and 14 after the treatment. In conclusion, remnant ablation may be available by milking and separation from the child for 7 to 14 days.

Published in Radiology Case Reports

ISSN: 1930-0433 (Online)
Publisher: Elsevier
Country of publisher: United States
LCC subjects: Medicine: Medicine (General): Medical physics. Medical radiology. Nuclear medicine
Website: https://www.sciencedirect.com/journal/radiology-case-reports

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