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Pattern of urine iodine excretion with low iodine diet during preparation for radioactive iodine ablation in patients with thyroid cancer

Kang, Sang‐,Wook,Yap, Zeng Z.,Lee, Cho Rok,Lee, Jandee,Jeong, Jong Ju,Nam, Kee‐,Hyun,Yun, Mi Jin,Lee, Eun Jig,Chung, Woong Youn,Park, Cheong Soo J. Wiley 2019 Head & neck Vol.41 No.2
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AbstractBackgroundThe optimal period of low iodine diet during preparation for radioactive iodine (RAI) ablation in an area with iodine‐rich diet was investigated.MethodsNinety‐four patients with thyroid cancer who underwent low iodine diet and RAI were prospectively allocated into 2 groups—thyroxine withdrawal or using recombinant human thyroid stimulating hormone (rhTSH) for TSH stimulation. Their urinary iodine excretion (UIE) patterns were analyzed.ResultsThere was no clinicopathological difference between the 2 groups except for tumor size and lymph node status. The UIE (median iodine to creatinine ratio, I/Cr) in the withdrawal group on the 7th and 14th day were 18.3 and 17.9 μg/gCr, respectively, with adequate preparation rate of 93.3% on both days (cutoff value 100 μg/gCr). In the rhTSH group, the median I/Cr on the 7th and 14th day were 48.0 and 45.7 μg/gCr (adequate preparation rates 91.8% and 93.8%), respectively.ConclusionOne week of low iodine diet is sufficient preparation for RAI regardless of method of TSH stimulation.
2
Long-term outcomes of abdominal paraganglioma

Hye Ryeon Choi,Zeng Yap,Soon Min Choi,Sun Hyung Choi,Jin Kyong Kim,Cho Rok Lee,Jandee Lee,Jong Ju Jeong,Kee-Hyun Nam,Woong Youn Chung,Sang-Wook Kang 대한외과학회 2020 Annals of Surgical Treatment and Research(ASRT) Vol.99 No.6
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Purpose: Paragangliomas (PGL) are rare neuroendocrine tumors derived from chromaffin cells of the autonomic nervous system. We aim to describe our experience and the long-term outcome of abdominal PGL over the last decade. Methods: A retrospective review of patients diagnosed with PGL in our hospital between November 2005 and June 2017 was conducted. All nonabdominal PGL were excluded and the clinicopathological features and long-term outcomes of the patients were analyzed. Results: A total of 46 patients were diagnosed with abdominal PGL. The average age of diagnosis was 55.4 years and there was no sex predilection. The average tumor size was 5.85 cm and they were predominantly located in the infrarenal position (50%). The mean follow-up period was 42 months (range, 1.8–252 months). All patients with metastases had Pheochromocytoma of the Adrenal Gland Scaled Score (PASS) of ≥4. One patient presented with synchronous metastases while 2 developed local recurrence and distant metastases. One presented with only local recurrence. One patient died 5 years after diagnosis. Conclusion: Abdominal PGL is a rare tumor with excellent long-term prognosis. Recurrence although uncommon, can occur decades after initial diagnosis. Long-term follow-up is therefore recommended for all patients with PGL, especially in patients with PASS of ≥4