1
|
Cai W, Wang Y, Zhao J, Li K, Zhao Y, Kang H. The role of intraoperative central lymph node biopsy in the treatment of clinically low-risk PTMC. Endocrine 2024:10.1007/s12020-024-03851-y. [PMID: 38935297 DOI: 10.1007/s12020-024-03851-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Accepted: 04/22/2024] [Indexed: 06/28/2024]
Abstract
PURPOSE To evaluate the role of intraoperative frozen biopsy of central lymph nodes in central neck dissection and thyroidectomy in patients of unilateral, clinically negative nodes (cN0) papillary thyroid microcarcinoma (PTMC) without extra-glandular invasion. METHODS The clinical data of 465 patients were collected retrospectively. Part of prelaryngeal, pretracheal and ipsilateral paratracheal lymph nodes were taken for frozen pathological examination during the operation. Then the thyroid lobe on the tumor side and isthmus were excised, and central neck dissection of the affected side was performed in all patients. The number of metastases in entire central lymph nodes of the affected side can be obtained by postoperative paraffin pathology. If the number of positive lymph nodes during surgery is ≥3, contralateral gland resection was performed. RESULTS In this group of 465 patients, there were 186 cases with central lymph node metastasis. The Kappa coefficient of consistency between frozen pathology and paraffin pathology in central lymph nodes was 0.605. The ROC curve for the number of intraoperative frozen metastases-postoperative pathological metastases over 5 showed that the AUC of the curve was 0.793, while the maximum Youden index was 0.5259, whose corresponding number of positive lymph nodes was 3. CONCLUSION Intraoperative central lymph nodes biopsy can be used as an important indicator for the status of central lymph node metastasis in unilateral cN0 PTMC patients without extra-glandular invasion and a determinant for central lymph node dissection. While the number of positive lymph nodes intraoperatively is ≥3, total thyroidectomy should be considered.
Collapse
Affiliation(s)
- Wei Cai
- Center for Thyroid and Breast Surgery, Department of General Surgery, Xuanwu Hospital Capital Medical University, 100053, Beijing, China
| | - Yajun Wang
- Center for Thyroid and Breast Surgery, Department of General Surgery, Xuanwu Hospital Capital Medical University, 100053, Beijing, China
| | - Jing Zhao
- Center for Thyroid and Breast Surgery, Department of General Surgery, Xuanwu Hospital Capital Medical University, 100053, Beijing, China
| | - Kaifu Li
- Center for Thyroid and Breast Surgery, Department of General Surgery, Xuanwu Hospital Capital Medical University, 100053, Beijing, China
| | - Ye Zhao
- Center for Thyroid and Breast Surgery, Department of General Surgery, Xuanwu Hospital Capital Medical University, 100053, Beijing, China
| | - Hua Kang
- Center for Thyroid and Breast Surgery, Department of General Surgery, Xuanwu Hospital Capital Medical University, 100053, Beijing, China.
| |
Collapse
|
2
|
Li S, Wei X, Wang L, Zhang G, Jiang L, Zhou X, Huang Q. Dual-source dual-energy CT and deep learning for equivocal lymph nodes on CT images for thyroid cancer. Eur Radiol 2024:10.1007/s00330-024-10854-w. [PMID: 38904758 DOI: 10.1007/s00330-024-10854-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 04/08/2024] [Accepted: 04/23/2024] [Indexed: 06/22/2024]
Abstract
OBJECTIVES This study investigated the diagnostic performance of dual-energy computed tomography (CT) and deep learning for the preoperative classification of equivocal lymph nodes (LNs) on CT images in thyroid cancer patients. METHODS In this prospective study, from October 2020 to March 2021, 375 patients with thyroid disease underwent thin-section dual-energy thyroid CT at a small field of view (FOV) and thyroid surgery. The data of 183 patients with 281 LNs were analyzed. The targeted LNs were negative or equivocal on small FOV CT images. Six deep-learning models were used to classify the LNs on conventional CT images. The performance of all models was compared with pathology reports. RESULTS Of the 281 LNs, 65.5% had a short diameter of less than 4 mm. Multiple quantitative dual-energy CT parameters significantly differed between benign and malignant LNs. Multivariable logistic regression analyses showed that the best combination of parameters had an area under the curve (AUC) of 0.857, with excellent consistency and discrimination, and its diagnostic accuracy and sensitivity were 74.4% and 84.2%, respectively (p < 0.001). The visual geometry group 16 (VGG16) based model achieved the best accuracy (86%) and sensitivity (88%) in differentiating between benign and malignant LNs, with an AUC of 0.89. CONCLUSIONS The VGG16 model based on small FOV CT images showed better diagnostic accuracy and sensitivity than the spectral parameter model. Our study presents a noninvasive and convenient imaging biomarker to predict malignant LNs without suspicious CT features in thyroid cancer patients. CLINICAL RELEVANCE STATEMENT Our study presents a deep-learning-based model to predict malignant lymph nodes in thyroid cancer without suspicious features on conventional CT images, which shows better diagnostic accuracy and sensitivity than the regression model based on spectral parameters. KEY POINTS Many cervical lymph nodes (LNs) do not express suspicious features on conventional computed tomography (CT). Dual-energy CT parameters can distinguish between benign and malignant LNs. Visual geometry group 16 model shows superior diagnostic accuracy and sensitivity for malignant LNs.
Collapse
Affiliation(s)
- Sheng Li
- Department of Radiology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, 510060, China
- Guangdong Esophageal Cancer Institute, Guangzhou, 510060, China
| | - Xiaoting Wei
- Department of Radiology, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518036, China
| | - Li Wang
- School of Artificial Intelligence, Optics and Electronics (iOPEN), Northwestern Polytechnical University, Xi'an, 710072, China
| | - Guizhi Zhang
- Department of Radiology, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518036, China
| | - Linling Jiang
- Department of Radiology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, 510060, China
| | - Xuhui Zhou
- Department of Radiology, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518036, China.
| | - Qinghua Huang
- School of Artificial Intelligence, Optics and Electronics (iOPEN), Northwestern Polytechnical University, Xi'an, 710072, China.
| |
Collapse
|
3
|
Zhong H, Zeng Q, Long X, Lai Y, Chen J, Wang Y. Risk factors analysis of lateral cervical lymph node metastasis in papillary thyroid carcinoma: a retrospective study of 830 patients. World J Surg Oncol 2024; 22:162. [PMID: 38907249 PMCID: PMC11191287 DOI: 10.1186/s12957-024-03455-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Accepted: 06/16/2024] [Indexed: 06/23/2024] Open
Abstract
OBJECTIVE The aim of this study is to investigate the risk factors for lateral cervical lymph node metastasis in papillary thyroid carcinoma (PTC). METHODS Clinicopathological data (age, gender, Hashimoto's thyroiditis, preoperative circulating tumor cells (CTCs), multifocal, maximum lesion diameter, invaded capsule, T stage, and lymph node metastasis) of 830 PTC patients diagnosed and treated in Meizhou People's Hospital from June 2021 to April 2023 were collected. The related factors of lateral cervical lymph node metastasis were analyzed. RESULTS There were 334 (40.2%), and 103 (12.4%) PTC patients with central lymph node metastasis, and lateral cervical lymph node metastasis, respectively. Compared with patients without lateral cervical lymph node metastasis, PTC patients with lateral cervical lymph node metastasis had a higher proportion of multifocal, maximum lesion diameter > 1 cm, invaded capsule, T3-T4 stage. Regression logistic analysis showed that male (odds ratio (OR): 2.196, 95% confidence interval (CI): 1.279-3.769, p = 0.004), age < 55 years old (OR: 2.057, 95% CI: 1.062-3.988, p = 0.033), multifocal (OR: 2.759, 95% CI: 1.708-4.458, p < 0.001), maximum lesion diameter > 1 cm (OR: 5.408, 95% CI: 3.233-9.046, p < 0.001), T3-T4 stage (OR: 2.396, 95% CI: 1.241-4.626, p = 0.009), and invaded capsule (OR: 2.051, 95% CI: 1.208-3.480, p = 0.008) were associated with lateral cervical lymph node metastasis. CONCLUSIONS Male, age < 55 years old, multifocal, maximum lesion diameter > 1 cm, T3-T4 stage, and invaded capsule were independent risk factors for lateral cervical lymph node metastasis in PTC.
Collapse
Affiliation(s)
- Haifeng Zhong
- Department of Thyroid Surgery, Meizhou People's Hospital, Meizhou Academy of Medical Sciences, Add: No. 63 Huangtang Road, Meijiang District, Meizhou, China
| | - Qingxin Zeng
- Department of Thyroid Surgery, Meizhou People's Hospital, Meizhou Academy of Medical Sciences, Add: No. 63 Huangtang Road, Meijiang District, Meizhou, China
| | - Xi Long
- Department of Radiology, Meizhou People's Hospital, Meizhou Academy of Medical Sciences, Meizhou, China
| | - Yeqian Lai
- Department of Thyroid Surgery, Meizhou People's Hospital, Meizhou Academy of Medical Sciences, Add: No. 63 Huangtang Road, Meijiang District, Meizhou, China
| | - Jiwei Chen
- Department of Thyroid Surgery, Meizhou People's Hospital, Meizhou Academy of Medical Sciences, Add: No. 63 Huangtang Road, Meijiang District, Meizhou, China
| | - Yuedong Wang
- Department of Thyroid Surgery, Meizhou People's Hospital, Meizhou Academy of Medical Sciences, Add: No. 63 Huangtang Road, Meijiang District, Meizhou, China.
| |
Collapse
|
4
|
Woods AL, Campbell MJ, Graves CE. A scoping review of endoscopic and robotic techniques for lateral neck dissection in thyroid cancer. Front Oncol 2024; 14:1297972. [PMID: 38390267 PMCID: PMC10883677 DOI: 10.3389/fonc.2024.1297972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 01/24/2024] [Indexed: 02/24/2024] Open
Abstract
Introduction Lateral neck dissection (LND) in thyroid cancer has traditionally been performed by a transcervical technique with a large collar incision. With the rise of endoscopic, video-assisted, and robotic techniques for thyroidectomy, minimally invasive LND is now being performed more frequently, with better cosmetic outcomes. Methods The purpose of this paper is to review the different minimally invasive and remote access techniques for LND in thyroid cancer. A comprehensive literature review was performed using PubMed and Google Scholar search terms "thyroid cancer" and "lateral neck dissection" and "endoscopy OR robot OR endoscopic OR video-assisted". Results There are multiple surgical options now available within each subset of endoscopic, video-assisted, and robotic LND. The approach dictates the extent of the LND but almost all techniques access levels II-IV, with variability on levels I and V. This review provides an overview of the indications, contraindications, surgical and oncologic outcomes for each technique. Discussion Though data remains limited, endoscopic and robotic techniques for LND are safe, with improved cosmetic results and comparable oncologic and surgical outcomes. Similar to patient selection in minimally invasive thyroidectomy, it is important to consider the extent of the LND and select appropriate surgical candidates.
Collapse
Affiliation(s)
- Alexis L Woods
- Department of Surgery, University of California, Davis Medical Center, Sacramento, CA, United States
| | - Michael J Campbell
- Department of Surgery, University of California, Davis Medical Center, Sacramento, CA, United States
| | - Claire E Graves
- Department of Surgery, University of California, Davis Medical Center, Sacramento, CA, United States
| |
Collapse
|
5
|
Cetinoglu I, Aygun N, Yanar C, Caliskan O, Kostek M, Unlu MT, Uludag M. Can Unilateral Therapeutic Central Lymph Node Dissection Be Performed in Papillary Thyroid Cancer with Lateral Neck Metastasis? SISLI ETFAL HASTANESI TIP BULTENI 2023; 57:458-465. [PMID: 38268664 PMCID: PMC10805041 DOI: 10.14744/semb.2023.22309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 12/26/2023] [Indexed: 01/26/2024]
Abstract
Objectives Unilateral or bilateral prophylactic central neck dissection (CND) in papillary thyroid cancer (PTC) is still controversial. We aimed to evaluate the risk factors for contralateral paratracheal lymph node metastasis and whether CND might be performed unilaterally. Methods Prospectively collected data of patients who underwent bilateral CND and lateral neck dissection (LND) with thyroidectomy due to PTC with lateral metastases, between January 2012 and November 2019, were evaluated retrospectively. The patients were divided into two groups according to the presence (Group 1) and absence (Group 2) of metastasis in the contralateral paratracheal region.A total of 42 patients (46 ±15.7 years) were operated. In the contralateral paratracheal region, Group 1 (35.7%) had metastases, while Group 2 (64.3%) had no metastases. In groups 1 and 2, metastasis rates were 100% vs 77.8% (p=0.073), 46.7% vs 18.5% (p=0.078), and 80% vs 40.7% (p=0.023) for the ipsilateralparatracheal, prelaryngeal and pretracheal lymph nodes, respectively.The number of metastatic lymph nodes in the central region was significantly higher in Group 1 compared to Group 2 as; 10.7±8.4 vs. 2.6±2.4 (p=0.001) in bilateral central region material; 8.3±7.4 vs. 2.9±2.7 (p=0.001) in lateral metastasis with ipsilateral unilateral central region; 3.8±3.4 vs. 1.9±1.9 (p=0.023) in ipsilateralparatracheal area; and 3.7±4.6 vs. 0.6±0.9 (p=0.001) in pretracheal region, respectively. However, no significant difference was found regarding the prelaryngeal region material (0.9±1.8 vs. 0.2±0.4 (p=0.71)). Results >2 metastatic central lymph nodes in unilateral CND material (AUC: 0.814, p<0.001, J=0.563) can estimate contralateral paratracheal metastasis with 93% sensitivity, 63% specificity, while >2 pretracheal metastatic lymph nodes (AUC: 0.795, p<0.001, J: 0.563) can estimate contralateral paratracheal metastasis with 60% sensitivity and 96.3% specificity. Conclusion In patients with lateral metastases, the rate of ipsilateralparatracheal metastasis is 85%, while the rate of contralateral paratracheal metastasis is 35.7%. The number of ipsilateral central region or pretracheal lymph node metastases may be helpful in predicting contralateral paratracheal lymph node metastases. Notably, unilateral CND may be performed in the presence of ≤ 2 metastases in the ipsilateral central region.
Collapse
Affiliation(s)
- Isik Cetinoglu
- Department of General Surgery, University of Health Sciences Türkiye, Sisli Hamidiye Etfal Training and Research Hospital, Istanbul, Türkiye
| | - Nurcihan Aygun
- Department of General Surgery, University of Health Sciences Türkiye, Sisli Hamidiye Etfal Training and Research Hospital, Istanbul, Türkiye
| | - Ceylan Yanar
- Department of General Surgery, University of Health Sciences Türkiye, Sisli Hamidiye Etfal Training and Research Hospital, Istanbul, Türkiye
| | - Ozan Caliskan
- Department of General Surgery, University of Health Sciences Türkiye, Sisli Hamidiye Etfal Training and Research Hospital, Istanbul, Türkiye
| | - Mehmet Kostek
- Department of General Surgery, University of Health Sciences Türkiye, Sisli Hamidiye Etfal Training and Research Hospital, Istanbul, Türkiye
| | - Mehmet Taner Unlu
- Department of General Surgery, University of Health Sciences Türkiye, Sisli Hamidiye Etfal Training and Research Hospital, Istanbul, Türkiye
| | - Mehmet Uludag
- Department of General Surgery, University of Health Sciences Türkiye, Sisli Hamidiye Etfal Training and Research Hospital, Istanbul, Türkiye
| |
Collapse
|
6
|
Uludag M, Cetinoglu I, Unlu MT, Kostek M, Caliskan O, Aygun N. The Role of Frozen Section Examination in Thyroid Surgery. SISLI ETFAL HASTANESI TIP BULTENI 2023; 57:441-450. [PMID: 38268652 PMCID: PMC10805043 DOI: 10.14744/semb.2023.91129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 12/26/2023] [Indexed: 01/26/2024]
Abstract
In endocrine pathology, frozen section (FS) examination is most commonly used for the intraoperative evaluation of thyroid and parathyroid tumors, as well as cervical lymph nodes. In the past, frozen section was considered a fundamental tool in thyroid surgery. However, with advancements in preoperative ultrasound and fine-needle aspiration biopsy (FNAB), there have been increasing queries about its routine use due to the improved preoperative diagnosis. Nowadays, while the use of FS during thyroidectomy has decreased, it is still used as an additional method for different purposes intraoperatively. FS may not always provide definitive results. If FS will alter the surgical plan or extent, it should be applied. Routine FS is not recommended for evaluating thyroid nodules. But in addition to FNAB, if FS results may change the operation plan or extent, they can be utilized. FS should not be applied for thyroid lesions smaller than 1 cm, and the entire lesion should not be frozen for FS. For the assessment of thyroid nodules, the use of FS is recommended based on the Bethesda categories of FNAB. In Bethesda I category nodules, FS may contribute to distinguishing between malignant and benign lesions and guide surgical treatment. In Bethesda II nodules, where the malignancy rate is low, the performance of FNAB and FS can be compared, but it's not recommended due to the lack of a significant contribution to the surgical strategy. The sensitivity of FS in Bethesda III and IV nodules is low; its contribution to the diagnosis is limited, and it does not provide an apparent benefit to treatment; therefore, it is not recommended. In Bethesda V nodules, FS can effectively confirm the malignancy diagnosis, contribute to the surgical strategy, and reduce the possibility of completion thyroidectomy, and accordingly, it is recommended for use. Nonetheless, in Bethesda V nodules with a benign FS report, the malignancy rate remains high, so it should not be used to rule out malignancy. In Bethesda VI nodules, the performance of FS is lower or comparable to FNAB and does not significantly contribute to the treatment strategy; hence, it is not recommended. Particularly in patients with papillary thyroid cancer, intraoperative FS can be effective in detecting extrathyroidal extension and can assist the surgeon in determining the extent of thyroid surgery and central neck dissection. FS has high sensitivity and specificity in evaluating the lymphatic status of the central region intraoperatively and can be used to determine the extent of central compartment node dissection. During thyroidectomy, FS examination can be used in recognizing parathyroid tissue and distinguishing it from fatty tissue, thymus, thyroid, lymph nodes, especially in differentiating metastatic lymph nodes.
Collapse
Affiliation(s)
- Mehmet Uludag
- Department of General Surgery, University of Health Sciences Türkiye, Sisli Hamidiye Etfal Training and Research Hospital, Istanbul, Türkiye
| | - Isik Cetinoglu
- Department of General Surgery, University of Health Sciences Türkiye, Sisli Hamidiye Etfal Training and Research Hospital, Istanbul, Türkiye
| | - Mehmet Taner Unlu
- Department of General Surgery, University of Health Sciences Türkiye, Sisli Hamidiye Etfal Training and Research Hospital, Istanbul, Türkiye
| | - Mehmet Kostek
- Department of General Surgery, University of Health Sciences Türkiye, Sisli Hamidiye Etfal Training and Research Hospital, Istanbul, Türkiye
| | - Ozan Caliskan
- Department of General Surgery, University of Health Sciences Türkiye, Sisli Hamidiye Etfal Training and Research Hospital, Istanbul, Türkiye
| | - Nurcihan Aygun
- Department of General Surgery, University of Health Sciences Türkiye, Sisli Hamidiye Etfal Training and Research Hospital, Istanbul, Türkiye
| |
Collapse
|
7
|
Lee JK, Choi JH, Kim W, Kwak J, Yu HW, Kim SJ, Chai YJ, Choi JY, Lee KE. Bilateral axillo-breast approach robotic thyroidectomy in pediatric patients with thyroid disease and cancer. Endocrine 2023; 81:532-539. [PMID: 37171524 DOI: 10.1007/s12020-023-03372-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 04/08/2023] [Indexed: 05/13/2023]
Abstract
PURPOSE Robotic thyroid surgeries have cosmetic advantages over open surgeries, which are especially important in pediatric patients due to social stigmas from neck scars. The present study describes outcomes in a series of children who underwent bilateral axillo-breast approach (BABA) robotic thyroidectomy. METHODS Pediatric patients aged ≤18 years who underwent BABA robotic thyroidectomy between 2014 and 2022 were retrospectively reviewed. Their clinical characteristics and surgical outcomes were evaluated. Surgical completeness was determined by comparing the number of retrieved lymph nodes per compartment to previously reported lymph node quantification. RESULTS This study included 26 pediatric patients of mean age 15.5 years (range, 5-18 years). Of these 26 patients, 21 (80.8%) had thyroid cancer, with 9 (42.9%) having aggressive tumor pathology. The mean operation time was 157.3 min. No patient needed open conversion. Five patients (19.2%) experienced complications including transient hypoparathyroidism (n = 5), permanent hypoparathyroidism (n = 2), and chyle leakage (n = 1), but none experienced vocal cord palsy. The mean numbers of retrieved lymph nodes at levels IIa, III, IV, Vb, and VI were 3.2, 4.1, 5.6, 1.0, and 9.7, respectively, numbers comparable with the known quantification except for level II, as IIb dissection was omitted in our series. CONCLUSION BABA robotic thyroidectomy is safe and effective in pediatric patients with thyroid diseases. Most complications were minor and transient, with the operation time similar to robotic thyroidectomy in adults. Surgical completeness was also satisfactory. Robotic thyroidectomy can be considered a surgical option, regardless of patient age or diagnosis.
Collapse
Affiliation(s)
- Ja Kyung Lee
- Department of Surgery, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Jee-Hye Choi
- Department of Surgery, Seoul National University Bundang Hospital, Seongnam, South Korea
- Department of Surgery, Icahn School of Medicine at Mount Sinai, The Mount Sinai Hospital, New York, NY, USA
| | - Woochul Kim
- Department of Surgery, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - JungHak Kwak
- Department of Surgery, Seoul National University Hospital, Seoul, South Korea
| | - Hyeong Won Yu
- Department of Surgery, Seoul National University Bundang Hospital, Seongnam, South Korea
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea
| | - Su-Jin Kim
- Department of Surgery, Seoul National University Hospital, Seoul, South Korea
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea
| | - Young Jun Chai
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea
- Department of Surgery, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, South Korea
| | - June Young Choi
- Department of Surgery, Seoul National University Bundang Hospital, Seongnam, South Korea.
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea.
| | - Kyu Eun Lee
- Department of Surgery, Seoul National University Hospital, Seoul, South Korea
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea
| |
Collapse
|