• 제목/요약/키워드: Thyroid, recurrent cancers

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갑상선암에 대한 고주파 절제 적용의 과거, 현재, 그리고 미래 (Application of Radiofrequency Ablation to Thyroid Cancer: Past, Present, and Future)

  • 김지훈
    • 대한영상의학회지
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    • 제84권5호
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    • pp.999-1008
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    • 2023
  • 발생률이 높고, 예후는 좋지만 재발을 잘하는 경향이 있는 갑상선암에서도 전통적인 치료법은 수술이다. 하지만, 2000년대 초반부터, 간암, 폐암, 신장암에서와 마찬가지로 고주파 절제술이 원발 갑상선암 및 재발 갑상선암에 적용되기 시작했다. 원발암에서는 1 cm 이하 크기의 미세유두암 저위험군에서 수술 불가능한 경우에 대한 많은 연구가 이뤄져 왔고, 1 cm보다 더 크고 4 cm 이하의 다양한 군에 대해서도 일부 연구가 시행되었으며, 전반적으로 모두 양호한 결과를 보고하였다. 재발암에 대해서도 주로는 국소 경부 재발암에 고주파 절제술이 시행되었으며, 일부 폐, 뼈 등의 원격 전이에 대해서도 시도되었고, 전반적으로 양호한 결과가 보고되었다. 최근 들어, 한국, 미국, 유럽 등 각지에서 갑상선암의 고주파 절제술에 대해 옹호하는 움직임이 있다. 하지만, 미국 국립 종합 암 네트워크(National Comprehensive Cancer Network) 등의 중립적인 임상지침에는 고주파 절제술이 아직 인정되지는 않은 상태이다. 지금까지의 노력들과 미래의 연구를 바탕으로 향후 가까운 미래에 갑상선암의 치료에 있어 고주파 절제술이 적절한 자리매김을 할 것으로 전망한다.

국내의 갑상선 고주파 절제술에 대한 교육: 현황 및 미래 전망 (Training of Radiofrequency Ablation for Thyroid Nodules in Korea: Current and Future Perspective )

  • 안혜신;정소령;백정환;성진용;김지훈
    • 대한영상의학회지
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    • 제84권5호
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    • pp.1009-1016
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    • 2023
  • 고주파 절제술(radiofrequency ablation)은 미세 침습 치료술의 한 방법으로 양성 갑상선 결절과 갑상선 재발암 환자에서 수술적 치료를 대신하여 이용되고 있다. 국내에서는 2002년 세계 최초로 갑상선 결절에 대한 고주파 절제술을 시작하여, 2008년에는 대규모 연구 결과를 발표하였다. 2009년 대한갑상선영상의학회(Korean Society of Thyroid Radiology)는 고주파 절제술에 대한 첫 권고안을 만들었으며, 2012년과 2018년에 이를 개정하였다. 대한갑상선영상의학회의 지침서는 갑상선 결절의 고주파 절제술에 대한 세계 최초의 지침서로 국내 및 국외에서 갑상선 고주파 절제술을 시행하는 시술자들을 위한 지침이 되었다. 이 지침서들은 한국 및 전 세계 여러 나라에서 고주파 절제술의 확립 및 확산에 크게 기여하였다. 또한 대한 갑상선영상의학회는 2015년부터 참가자 수준에 맞춘 고주파 절제술의 심화 실습 과정을 진행하고 있다. 본 종설에서는 대한갑상선영상의학회에서 실시한 고주파 절제술 교육의 역사를 소개하고, 고주파 절제술의 학습 곡선 및 현재 한국에서의 교육 프로그램을 기술한 후 앞으로 나아갈 방향을 제시해보고자 한다.

2020 Imaging Guidelines for Thyroid Nodules and Differentiated Thyroid Cancer: Korean Society of Thyroid Radiology

  • Ji Ye Lee;Jung Hwan Baek;Eun Ju Ha;Jin Yong Sung;Jung Hee Shin;Ji-hoon Kim;Min Kyoung Lee;So Lyung Jung;Young Hen Lee;Hye Shin Ahn;Jung Hyun Yoon;Yoon Jung Choi;Jeong Seon Park;Yoo Jin Lee;Miyoung Choi;Dong Gyu Na;Korean Society of Thyroid Radiology (KSThR) and Korean Society of Radiology
    • Korean Journal of Radiology
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    • 제22권5호
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    • pp.840-860
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    • 2021
  • Imaging plays a key role in the diagnosis and characterization of thyroid diseases, and the information provided by imaging studies is essential for management planning. A referral guideline for imaging studies may help physicians make reasonable decisions and minimize the number of unnecessary examinations. The Korean Society of Thyroid Radiology (KSThR) developed imaging guidelines for thyroid nodules and differentiated thyroid cancer using an adaptation process through a collaboration between the National Evidence-based Healthcare Collaborating Agency and the working group of KSThR, which is composed of radiologists specializing in thyroid imaging. When evidence is either insufficient or equivocal, expert opinion may supplement the available evidence for recommending imaging. Therefore, we suggest rating the appropriateness of imaging for specific clinical situations in this guideline.

갑상선 영상의학 진료: 갑상선 결절 환자의 진단과 중재적 치료 (Thyroid Radiology Practice: Diagnosis and Interventional Treatment of Patients with Thyroid Nodules)

  • 백정환;나동규
    • 대한영상의학회지
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    • 제81권3호
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    • pp.530-548
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    • 2020
  • 갑상선 영상의학 진료란 갑상선 질환 환자를 영상의학적 방법을 활용하여 질병 진단과 중재적 치료를 하는 의료 행위로 정의될 수 있으며 주요 진료 대상은 갑상선 결절 질환 환자들이다. 갑상선 결절의 진단은 일차적으로 초음파 영상진단과 생검에 의해서 이루어지고 결절의 치료는 비수술적 중재적 치료와 갑상선절제술이다. 갑상선 낭종 혹은 낭성우세 양성 결절에서는 에탄올절제술이 일차적 치료법이고 고주파절제술은 고형 혹은 고형우세 양성 결절과 갑상선 재발암 치료에 적용되고 있다. 갑상선 영상의학 진료는 갑상선 결절 질환 환자의 진단 및 비수술적 치료의 대부분을 담당하는 중요한 임상적 역할을 가지고 있으며, 적절한 환자 진료를 위해서는 표준적 진료 지침에 근거하여 진료가 수행되어야 한다. 환자에게 최적의 갑상선 영상의학 진료를 제공하기 위해서는 영상의학과 외래에서 환자를 진료하는 것이 바람직하며 외래 중심의 갑상선 영상의학 진료를 확대하도록 함께 노력해야 할 시점이다.

Ultrasound Imaging in Active Surveillance of Small, Low-Risk Papillary Thyroid Cancer

  • Sangeet Ghai;David P Goldstein;Anna M Sawka
    • Korean Journal of Radiology
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    • 제25권8호
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    • pp.749-755
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    • 2024
  • The recent surge in the incidence of small papillary thyroid cancers (PTCs) has been linked to the widespread use of ultrasonography, thereby prompting concerns regarding overdiagnosis. Active surveillance (AS) has emerged as a less invasive alternative management strategy for low-risk PTCs, especially for PTCs measuring ≤1 cm in maximal diameter. Recent studies report low disease progression rates of low-risk PTCs ≤1 cm under AS. Ongoing research is currently exploring the feasibility of AS for larger PTCs (<20 mm). AS protocols include meticulous ultrasound assessment, emphasis on standardized techniques, and a multidisciplinary approach; they involve monitoring the nodules for size, growth, potential extrathyroidal extension, proximity to the trachea and recurrent laryngeal nerve, and potential cervical nodal metastases. The criteria for progression, often defined as an increase in the maximum diameter of the PTC, warrant a review of precision and ongoing examinations. Challenges exist regarding the reliability of volume measurements for defining PTC disease progression. Although ultrasonography plays a pivotal role, challenges in assessing progression and minor extrathyroidal extension underscore the importance of a multidisciplinary approach in disease management. This comprehensive overview highlights the evolving landscape of AS for PTCs, emphasizing the need for standardized protocols, meticulous assessments, and ongoing research to inform decision-making.

인공지능 딥러닝을 이용한 갑상선 초음파에서의 갑상선암의 재발 예측 (Deep Learning in Thyroid Ultrasonography to Predict Tumor Recurrence in Thyroid Cancers)

  • 길지은;김광기;김영재;구혜령;박정선
    • 대한영상의학회지
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    • 제81권5호
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    • pp.1164-1174
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    • 2020
  • 목적 수술 전 초음파 검사에서 갑상선 종양의 재발을 예측할 수 있는 심층 학습 모델을 개발하고자 한다. 대상과 방법 수술 전 초음파에서 병리학적으로 확진된 갑상선 수술을 받은 229명의 환자(남성:여성 = 42:187, 평균 연령, 49.6세)의 대표적인 초음파 이미지를 포함시켰다. 각각 대표적인 횡축 또는 종축 초음파 이미지가 선택되었다. 신경 네트워크용 Python 2.7.6 및 Keras 2.1.5, convolutional neural network을 사용한 심층 학습이 사용되었다. 재발한 환자와 재발이 없는 환자의 임상 및 조직학적 특징을 비교하였다. 그룹 간의 심층 학습 모델의 receiver operating characteristic curve 곡선 아래의 영역은 재발 갑상선암을 예측하기 위한 심층 학습 모델의 예측에 사용되었다. 결과 전체 환자 229명 중 49명이 종양 재발(21.4%)을 보였다. 종양의 크기, 다원성은 재발이 없는 군과 재발 군에서 유의한 차이가 있었다(p < 0.05). 재발성 갑상선암 예측을 위한 심층 학습 모델의 전반적인 평균 area under the curve (이하 AUC) 값은 0.9 ± 0.06이었다. 평균 AUC는 macrocarcinoma에서 0.87 ± 0.03, microcarcinoma에서 0.79 ± 0.16이었다. 결론 갑상선암의 초음파 이미지를 이용한 심층 학습 모델로 갑상선암 재발의 예측 모델 구축의 가능성을 보여주었다.

Sodium Iodide Symporter (NIS)를 이용한 분자영상 (Molecular Imaging Using Sodium Iodide Symporter (NIS))

  • 조제열
    • 대한핵의학회지
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    • 제38권2호
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    • pp.152-160
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    • 2004
  • Radioiodide uptake in thyroid follicular epithelial cells, mediated by a plasma membrane transporter, sodium iodide symporter (NIS), provides a first step mechanism for thyroid cancer detection by radioiodide injection and effective radioiodide treatment for patients with invasive, recurrent, and/or metastatic thyroid cancers after total thyroidectomy. NIS gene transfer to tumor cells may significantly and specifically enhance internal radioactive accumulation of tumors following radioiodide administration, and result in better tumor control. NIS gene transfers have been successfully performed in a variety of tumor animal models by either plasmid-mediated transfection or virus (adenovirus or retrovirus)-mediated gene delivery. These animal models include nude mice xenografted with human melanoma, glioma, breast cancer or prostate cancer, rats with subcutaneous thyroid tumor implantation, as well as the rat intracranial glioma model. In these animal models, non-invasive imaging of in vivo tumors by gamma camera scintigraphy after radioiodide or technetium injection has been performed successfully, suggesting that the NIS can serve as an imaging reporter gene for gene therapy trials. In addition, the tumor killing effects of I-131, ReO4-188 and At-211 after NIS gene transfer have been demonstrated in in vitro clonogenic assays and in vivo radioiodide therapy studies, suggesting that NIS gene can also serve as a therapeutic agent when combined with radioiodide injection. Better NIS-mediated imaging and tumor treatment by radioiodide requires a more efficient and specific system of gene delivery with better retention of radioiodide in tumor. Results thus far are, however, promising, and suggest that NIS gene transfer followed by radioiodide treatment will allow non-invasive in vivo imaging to assess the outcome of gene therapy and provide a therapeutic strategy for a variety of human diseases.

Sonographic Assessment of the Extent of Extrathyroidal Extension in Thyroid Cancer

  • Sae Rom Chung;Jung Hwan Baek;Young Jun Choi;Tae-Yon Sung;Dong Eun Song;Tae Yong Kim;Jeong Hyun Lee
    • Korean Journal of Radiology
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    • 제21권10호
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    • pp.1187-1195
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    • 2020
  • Objective: This study aimed to determine the sonographic features suggestive of extrathyroidal extension (ETE) of thyroid cancers. Materials and Methods: We retrospectively reviewed the sonographic images of 1656 consecutive patients who had undergone thyroidectomy in 2017. The diagnostic performance of sonographic features suggestive of ETE was evaluated using operation and histopathologic reports. Sonographic features for gross ETE to the strap muscle and minor ETE were assessed for thyroid cancer abutting the anterolateral thyroid capsule. Sonographic features for tracheal invasion were assessed according to whether the angle between the tumor and the trachea was an acute, right, or obtuse angle. Sonographic features for recurrent laryngeal nerve (RLN) invasion were assessed based on the association between the tumor and tracheoesophageal groove (TEG) as preserved normal tissue, abutting or protruding into the TEG. Results: ETE was observed in 783 patients (47.3%), including 123 patients with gross ETE (7.4% [strap muscle, n = 97; RLN, n = 24; and trachea, n = 14]) and 660 patients with minor ETE (39.9%). Regarding the diagnosis of gross and minor ETE to the strap muscle, sonographic features of replacement of the strap muscle and capsular disruption showed the highest positive predictive value (75.9% and 58.5%, respectively). Thyroid cancer forming an obtuse angle with the trachea had the highest sensitivity for the diagnosis of tracheal invasion (85.7%), and thyroid cancer protrusion into the TEG showed the highest sensitivity for the diagnosis of RLN (83.3%). Conclusion: Sonography is considered beneficial in the diagnosis of ETE to the strap muscle, trachea, and RLN. Assessment of ETE is important for the accurate staging of thyroid cancer, which in turn determines the extent of surgery or whether active surveillance is appropriate or not.

갑상선 전 절제술 및 근전 절제술의 안전성에 대한 고찰 (Safety of Total and Near-total Thyroidectomy)

  • 서광욱;이우철;박정수
    • 대한두경부종양학회지
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    • 제8권1호
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    • pp.14-20
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    • 1992
  • To clarify the safety of both total and near-total thyroidectomy, and to guide a selectionof an adequate type of surgical treatment of thyroid diseases, 192 consecutive total or near-total thyroidectomy cases were reviewed. They were divided into two groups: ont, the total thyroidectomy group(Group T,N=111) and the other, the near-total thyroidectomy group (Group NT, N=81). In both groups, complication rates, associations of complication rates with extents of surgery and stage of lesion were observed. Complication rate was significantly higher in Group T (53.6% vs 12.3%, p<0.05). But the rate of permanent complications such as permanent hypoparathyroidism and recurrent laryngeal nerve injury was remarkably low(4.5% in Group T, 6.0% in Group NT) and shows no significant difference in both groups. There was no permanent complication in cases where any type of neck dissection had not been performed regardless of the type thyroidectomy. But among whom underwent central compartmental neck dissection(CCND) and functional neck dissection(FND), 4(4.4%) and 4(6.4%) cases showed permanent complications. There was no statistical significance in differences between Group I and NT. In cases who underwent concomittant classical radical neck dissection(RND), 3(25.5%) showed permament complications. In this subgroups, complications were significantly higher in Group T(p<0.005). Complications were also directly related to the stage of the lesion. Only one patient showed permanent complication in 74 intracapsular lesions but 9 permanent complications were observed in 118 advanced lesions. We could clarify both total and near-total thyroidectomy were safe operations and the complications were related to accompanying neck dissections and the disease status rather than total or near-total thyroidectomy itself. Thus, we think that for the cases where higher complication rates are expected, such as locally advanced thryoid cancers or the cases which required wider neck dissection, the near-total thyroidectomy would be a preferrable method.

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