Metastatic papillary thyroid cancers with malignant pleural effusion aggravated during thyroid hormone withdrawal for radioiodine therapy

Seo, Ji Hye; Je, Ji Hye; Lee, Hyun Jung; Na, Young Ju; Jeong, Il Woo; An, Jee Hyun; Kim, Sin Gon; Choi, Dong Seop; Kim, Nam Hoon

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자료유형: 학술저널

저자정보: Seo, Ji Hye (Department of Internal Medicine, Korea University College of Medicine) Je, Ji Hye (Department of Internal Medicine, Korea University College of Medicine) Lee, Hyun Jung (Department of Internal Medicine, Korea University College of Medicine) Na, Young Ju (Department of Internal Medicine, Korea University College of Medicine) Jeong, Il Woo (Department of Internal Medicine, Korea University College of Medicine) An, Jee Hyun (Department of Internal Medicine, Korea University College of Medicine) Kim, Sin Gon (Department of Internal Medicine, Korea University College of Medicine) Choi, Dong Seop (Department of Internal Medicine, Korea University College of Medicine) Kim, Nam Hoon (Department of Internal Medicine, Korea University College of Medicine)

저널정보: 영남대학교 의과대학 영남의대학술지 영남의대학술지 제32권 제2호

발행연도: 2015.1

수록면: 138 - 142 (5page)

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L-thyroxine (LT4) withdrawal prior to radioactive iodine (RAI) ablation therapy is a commonly used method for successful treatment of patients with papillary thyroid cancer (PTC). However, a prolonged period of hypothyroidism induced by LT4 withdrawal is sometimes associated with impaired quality of life and cardiopulmonary dysfunction in PTC patients. Furthermore, LT4 withdrawal may have a trophic effect on residual cancer by means of increased thyrotropin. We report on 2 cases of metastatic PTC patients with malignant pleural effusion (MPE) whose disease showed rapid worsening after LT4 withdrawal and RAI therapy. The first case is a 65-year-old woman who had PTC with multiple distant metastases and MPE. During LT4 withdrawal for RAI therapy, MPE showed rapid worsening, and the patient required repetitive therapeutic thoracentesis. The second case is a 49-year-old woman with PTC who underwent 3 additional operations for cancer recurrence in the neck lymph nodes and 6 times of RAI treatments. While preparing for the $7^{th}$ RAI treatment by withdrawing LT4, she developed MPE which became progressively aggravated after RAI therapy. Both patients experienced increased pleural effusion during the LT4 withdrawal period and a rise in the thyroglobulin level was observed after RAI therapy. MPE was not controlled with therapeutic thoracentesis and pleurodesis. Eventually, both patients died of rapid disease progression after RAI therapy. In summary, LT4 withdrawal may have an adverse effect on metastatic PTC patients, particularly those with MPE.

#Thyroid neoplasms #Thyroid hormones #Malignant pleural effusion

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