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42 results on '"Yoon, Ra Gyoung"'

40. High-Resolution Magnetic Resonance Imaging Findings of Reversible Cerebral Vasoconstriction Syndrome associated with Severe Anemia: A Case Report.

Author

Kim Y, Yoon RG, Lee JY, and Park JM

Abstract

Ischemic stroke is one of the manifestations of reversible cerebral vasoconstriction syndrome (RCVS). Many precipitants and associated disorders of RCVS have been suggested. However, few case reports have indicated an association between anemia and RCVS. Here, we report a case of a 66-year-old female with severe iron deficiency anemia (IDA), who presented with ischemic stroke and cerebral vasoconstriction, which gradually improved with conservative treatment. High-resolution vessel wall magnetic resonance imaging findings and reversibility suggested the possibility of RCVS. In patients with RCVS and ischemic stroke, IDA should be considered. Prompt management should be delivered to prevent disease progression and recurrence., Competing Interests: Conflicts of Interest: The authors have no potential conflicts of interest to disclose., (Copyrights © 2021 The Korean Society of Radiology.)

Published
2021
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41. Ultrasonographic Features and the Diagnostic Role of Core Needle Biopsy at Metastatic Breast Cancer in the Thyroid gland: A Case Report.

Author

Lee DH, Yoon RG, An JK, and Woo JJ

Abstract

Metastases to the thyroid gland have rarely been reported in clinical settings, and the thyroid gland is an uncommon site for breast carcinoma metastasis. We report a case of a 64-year-old breast cancer patient diagnosed with metastatic breast carcinoma in the thyroid gland after performing ultrasonography (US)-guided core needle biopsy (CNB) and subsequent total thyroidectomy. On US, the thyroid lesion appeared to be mildly enlarged with multiple internal hypoechoic lines and a few microcalcifications without mass formation. Under US-guidance, CNB was performed by targeting the area with microcalcifications and subsequently diagnosed as metastatic breast carcinoma. Total thyroidectomy revealed that the patient had metastatic invasive ductal carcinoma of the breast with lymphatic spread involving both lobes and the isthmus of the thyroid gland. Although the thyroid gland is an uncommon metastatic site, the unusual features of thyroid metastasis can be observed on US; thus, US-guided CNB effectively aids the diagnosis of thyroid metastasis., Competing Interests: Conflicts of Interest: The authors have no potential conflicts of interest to disclose., (Copyrights © 2020 The Korean Society of Radiology.)

Published
2020
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42. Effect of selenium supplementation for protection of salivary glands from iodine-131 radiation damage in patients with differentiated thyroid cancer.

Author

Son H, Lee SM, Yoon RG, Lee H, Lee I, Kim S, Chung WY, and Lee JW

Subjects
Administration, Oral, Adult, Dietary Supplements, Female, Humans, Iodine Radioisotopes therapeutic use, Male, Middle Aged, Radiation Injuries diagnosis, Radiation Injuries etiology, Radiation-Protective Agents administration & dosage, Radiopharmaceuticals adverse effects, Radiopharmaceuticals therapeutic use, Single-Blind Method, Thyroid Neoplasms complications, Treatment Outcome, Iodine Radioisotopes adverse effects, Radiation Injuries prevention & control, Selenium administration & dosage, Sialadenitis etiology, Sialadenitis prevention & control, Thyroid Neoplasms radiotherapy
Abstract

Objective: In the current study, we examined whether selenium supplementation during iodine-131 ( 131 I) treatment had a radio-protective effect on salivary glands., Subjects and Methods: Sixteen patients with differentiated thyroid cancer were prospectively enrolled in the study. Patients after total thyroidectomy, before 131 I treatment, were divided into two groups; 8 patients in the selenium group and 8 patients in the control group. Patients in the selenium group received 300νg of selenium orally for 10 days, from 3 days before to 6 days after 131 I treatment. The control group received a placebo over the same period. To assess salivary gland function, salivary gland scintigraphy was performed before and 6 months after 131 I treatment. Serum amylase and whole blood selenium levels were measured before and 2 days and 6 months after 131 I treatment. Using salivary gland scintigraphy, maximum uptake ratio (MUR), maximum secretion percentage (MSP), and ejection fraction (EF) of each salivary gland were calculated., Results: Baseline clinical characteristics, baseline amylase and selenium levels, and parameters of baseline salivary gland scintigraphy were not significantly different between selenium and control groups (P>0.05). On a blood test performed 2 days after 131 I treatment, the selenium group showed a significantly higher whole blood selenium level (P=0.008) and significantly lower serum amylase level (P=0.009) than the control group. On follow-up salivary gland scintigraphy, the control group showed significantly decreased, MUR of the bilateral parotid and left submandibular glands, MSP of the bilateral parotid and submandibular glands, and EF of the left submandibular glands (P<0.05), while the selenium group only had a significant decrease in MSP of the right submandibular gland and EF of the left submandibular gland (P<0.05)., Conclusion: Selenium supplementation during 131 I treatment was effective to reduce salivary glands damage by 131 I radiation in patients with differentiated thyroid cancer.

Published
2017
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