Cancer Research and Treatment

Original Articles

General

Radiation Oncologists’ Perspectives on Oligometastatic Disease: A Korean Survey Study: Chai Hong Rim, Won Kyung Cho, Jong Hoon Lee, Young Seok Kim, Yang-Gun Suh, Kyung Hwan Kim, Ah Ram Chang, Eui Kyu Chie, Yong Chan Ahn, on behalf of the Oligometastasis Working Group, Korean Cancer Association; Cancer Res Treat. 2024;56(2):414-421. Published online November 22, 2023; DOI: https://doi.org/10.4143/crt.2023.876

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Purpose
Perspectives of radiation oncologists on oligometastatic disease was investigated using multi-layered survey.
Materials and Methods
Online survey on the oligometastatic disease was distributed to the board-certified regular members of the Korean Society for Radiation Oncology. The questionnaire consisted of four domains: five questions on demographics; five on the definition of oligometastatic disease; four on the role of local therapy; and three on the oligometastatic disease classification, respectively.
Results
A total of 135 radiation oncologists participated in the survey. The median length of practice after board certification was 22.5 years (range, 1 to 44 years), and the vast majority (94.1%) answered affirmatively to the clinical experience in oligometastatic disease management. Nearly two-thirds of the respondents considered the number of involved organs as an independent factor in defining oligometastasis. Most frequently perceived upper limit on the numerical definition of oligometastasis was 5 (64.2%), followed by 3 (26.0%), respectively. Peritoneal and brain metastasis were nominated as the sites to be excluded from oligometastastic disease by 56.3% and 12.6% of the participants, respectively. Vast majority (82.1%) agreed on the role of local treatment in the management of oligometastatic disease. Majority (72%) of the participants acknowledged the European Society for Radiotherapy and Oncology (ESTRO)–European Organisation for Research and Treatment of Cancer (EORTC) classification of oligometastatic disease, however, only 43.3% answered that they applied this classification in their clinical practice. Underlying reasons against the clinical use were ‘too complicated’ (66.0%), followed by ‘insufficient supporting evidence’ (30.0%), respectively.
Conclusion
While most radiation oncologists supported the role of local therapy in oligometastatic disease, there were several inconsistencies in defining and categorizing oligometastatic disease. Continued education and training on oligometastatic disease would be also required to build consensus among participating caregivers.

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A new proposal of simplified classification of non-small cell lung cancer oligometastases for easy applicability through systematic literature analysis and meta-analysis validation
Hanseung Kang, Woohyeon Do, Yong Chan Ahn, Eui Kyu Chie, Chai Hong Rim
European Journal of Cancer.2024; 212: 115043. CrossRef

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Gastrointestinal Cancer

Development and Validation of a Symptom-Focused Quality of Life Questionnaire (KOQUSS-40) for Gastric Cancer Patients after Gastrectomy: Bang Wool Eom, Joongyub Lee, In Seob Lee, Young-Gil Son, Keun Won Ryu, Sung Geun Kim, Hyoung-Il Kim, Young-Woo Kim, Seong-Ho Kong, Oh Kyoung Kwon, Ji-Ho Park, Ji Yeong An, Chang Hyun Kim, Byoung-Jo Suh, Hong Man Yoon, Myoung Won Son, Ji Yeon Park, Jong-Min Park, Sang-Ho Jeong, Moon-Won Yoo, Geum Jong Song, Han-Kwang Yang, Yun-Suhk Suh, Ki Bum Park, Sang-Hoon Ahn, Dong Woo Shin, Ye Seob Jee, Hye-Seong Ahn, Sol Lee, Jae Seok Min, Haejin In, Ahyoung Kim, Hoon Hur, Hyuk-Joon Lee, on behalf of KOrean QUality of life in Stomach cancer patients Study group (KOQUSS); Cancer Res Treat. 2021;53(3):763-772. Published online December 29, 2020; DOI: https://doi.org/10.4143/crt.2020.1270

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Purpose
Patients who have undergone gastrectomy have unique symptoms that are not appropriately assessed using currently available tools. This study developed and validated a symptom-focused quality of life (QoL) questionnaire for patients who have received gastrectomy for gastric cancer. Materials and Methods Based on a literature review, patient interviews, and expert consultation by the KOrean QUality of life in Stomach cancer patients Study group (KOQUSS), the initial item pool was developed. Two large-scale developmental studies were then sequentially conducted for exploratory factor analyses for content validity and item reduction. The final item pool was validated in a separate cohort of patients and assessed for internal consistency, test-retest reliability, construct validity, and clinical validity.
Results
The initial questionnaire consisted of 46-items in 12 domains. Data from 465 patients at 11 institutions, followed by 499 patients at 13 institutions, were used to conduct item reduction and exploratory factor analyses. The final questionnaire (KOQUSS-40) comprised 40 items within 11 domains. Validation of KOQUSS-40 was conducted on 413 patients from 12 hospitals. KOQUSS-40 was found to have good model fit. The mean summary score of the KOQUSS-40 was correlated with the EORTC QLQ-C30 and STO22 (correlation coefficients, 0.821 and 0.778, respectively). The KOQUSS-40 score was also correlated with clinical factors, and had acceptable internal consistency (> 0.7). Test-retest reliability was greater than 0.8. Conclusion The KOQUSS-40 can be used to assess QoL of gastric cancer patients after gastrectomy and allows for a robust comparison of surgical techniques in clinical trials.

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Global status of research on gastrointestinal cancer patients’ quality of life: A bibliometric and visual analysis from 2003 to 2023
Xiaoqin Wang, Caihua Wang, Wenjin Han, Jiaru Sun, Zhaozhao Hui, Shuangyan Lei, Huili Wu, Xiaohong Liu
Heliyon.2024; 10(1): e23377. CrossRef
Development and Feasibility Assessment of Mobile Application-Based Digital Therapeutics for Postoperative Supportive Care in Gastric Cancer Patients Following Gastrectomy
Ji-Hyeon Park, Hyuk-Joon Lee, JeeSun Kim, Yo-Seok Cho, Sunjoo Lee, Seongmin Park, Hwinyeong Choe, Eunhwa Song, Youngran Kim, Seong-Ho Kong, Do Joong Park, Byung-Ho Nam, Han-Kwang Yang
Journal of Gastric Cancer.2024; 24(4): 420. CrossRef
Effect of Four Main Gastrectomy Procedures for Proximal Gastric Cancer on Patient Quality of Life: A Nationwide Multi-Institutional Study
Koji Nakada, Akitoshi Kimura, Kazuhiro Yoshida, Nobue Futawatari, Kazunari Misawa, Kuniaki Aridome, Yoshiyuki Fujiwara, Kazuaki Tanabe, Hirofumi Kawakubo, Atsushi Oshio, Yasuhiro Kodera
Journal of Gastric Cancer.2023; 23(2): 275. CrossRef
Quality of life after gastric cancer surgery
Jae Kyun Park, Hyuk-Joon Lee
Foregut Surgery.2023; 3(2): 27. CrossRef
Long-term Functional and Patient-reported Outcomes Between Intra-corporeal Delta-shaped Gastroduodenostomy and Gastrojejunostomy After Laparoscopic Distal Gastrectomy
Sin Hye Park, Hong Man Yoon, Keun Won Ryu, Young-Woo Kim, Mira Han, Bang Wool Eom
Journal of Gastric Cancer.2023; 23(4): 561. CrossRef
Potential Applicability of Local Resection With Prophylactic Left Gastric Artery Basin Dissection for Early-Stage Gastric Cancer in the Upper Third of the Stomach
Yoshimasa Akashi, Koichi Ogawa, Katsuji Hisakura, Tsuyoshi Enomoto, Yusuke Ohara, Yohei Owada, Shinji Hashimoto, Kazuhiro Takahashi, Osamu Shimomura, Manami Doi, Yoshihiro Miyazaki, Kinji Furuya, Shoko Moue, Tatsuya Oda
Journal of Gastric Cancer.2022; 22(3): 184. CrossRef
Systematic review of health-related quality of life (HRQoL) issues associated with gastric cancer: capturing cross-cultural differences
Alison Rowsell, Samantha C. Sodergren, Vassilios Vassiliou, Anne-Sophie Darlington, Marianne G. Guren, Bilal Alkhaffaf, Chantelle Moorbey, Kristopher Dennis, Mitsumi Terada
Gastric Cancer.2022; 25(4): 665. CrossRef
Patient-reported gastrointestinal symptoms following surgery for gastric cancer and the relative risk factors
Rui Xu, Qiong Gu, Shuomeng Xiao, Ping Zhao, Zhi Ding
Frontiers in Oncology.2022;[Epub] CrossRef
Prospective multicentre randomised clinical trial comparing survival rates, quality of life and nutritional status between advanced gastric cancer patients with different follow-up intensities: study protocol for the STOFOLUP trial
Bang Wool Eom, Dong-Hoe Koo, Ji Yeong An, Han Hong Lee, Hyoung-Il Kim, Hoon Hur, Moon-Won Yoo, Min-Hee Ryu, Hyuk-Joon Lee, Su Mi Kim, Ji-Ho Park, Jae Seok Min, Kyung Won Seo, Sang-Ho Jeong, Oh Jeong, Oh Kyoung Kwon, Seung Wan Ryu, Chang Hak Yoo, Jae Moon
BMJ Open.2021; 11(12): e056187. CrossRef

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Development and Evaluation of a Korean Version of a Thyroid-Specific Quality-of-Life Questionnaire Scale in Thyroid Cancer Patients: Chang Hwan Ryu, Boram Park, Junsun Ryu, Youn Mi Ryu, Seong Ae Jo, You Jin Lee, Eun-Kyung Lee, Yul Hwangbo, Jungnam Joo, Yuh-Seog Jung; Cancer Res Treat. 2018;50(2):405-415. Published online May 26, 2017; DOI: https://doi.org/10.4143/crt.2017.012

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Purpose
The purpose of this study was to develop a Korean version of the self-reported thyroid-specific quality of life (QoL) questionnaire for thyroid cancer patients (KT-QoL), and to evaluate its reliability and validity.
Materials and Methods
Two hundred seventy-two patients who underwent thyroidectomy from January to December 2010 were recruited in this study. The original version of the thyroid QoL was translated into Korean and evaluated for its reliability and validity. Using the developed KT-QoL, the postoperative QoL was evaluated until postoperative 1 year.
Results
At the preoperative baseline, the item internal consistency (IIC) ranged from ‒0.19 to 0.76, with low IIC values for items 2, 17, and 27. Item discriminant validity ranged from 86% to 97%. These values were similar at the postoperative periods. The internal consistency reliability (Cronbach’s α) was high for all dimensions, ranging from 0.90 to 0.95. The test-retest reliability (intraclass correlation coefficient) was acceptable (0.74-0.82). The external validity examined by the correlation between the item 1j (voice changes) of KT-QoL and the voice handicap index-30 ranged from 0.51 to 0.75. Patients’ QoL scores decreased after surgery, which demonstrated the sensitivity of the questionnaire. The QoL scores in patients with lobectomy showed best QoL scores postoperatively and those with receiving radioactive iodine still showed decreased QoL scores along the postoperative periods.
Conclusion
These results demonstrate that KT-QoL is a valid instrument for evaluating QoL of Korean patients with thyroid cancer.

Citations

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Health-Related Quality of Life in Patients with Low-Risk Differentiated Thyroid Cancer: A Systematic Review Examining the Extent of Thyroidectomy
Kathy Bach, Palvishey Ansari, Hamayail Ansari, Nicole M. Mott, Dawn M. Elfenbein, Hunter Underwood, Susan C. Pitt
Thyroid®.2024; 34(1): 14. CrossRef
Longitudinal Changes in Quality of Life Before and After Thyroidectomy in Patients With Differentiated Thyroid Cancer
Byung Hun Kim, Soo Rack Ryu, Jin Won Lee, Chang Myeon Song, Yong Bae Ji, Seok Hyun Cho, Seung Hwan Lee, Kyung Tae
The Journal of Clinical Endocrinology & Metabolism.2024; 109(6): 1505. CrossRef
Effect of thyroid-stimulating hormone suppression on quality of life in thyroid lobectomy patients: interim analysis of a multicenter, randomized controlled trial in low- to intermediate-risk thyroid cancer patients (MASTER study)
Ja Kyung Lee, Eu Jeong Ku, Su-jin Kim, Woochul Kim, Jae Won Cho, Kyong Yeun Jung, Hyeong Won Yu, Yea Eun Kang, Mijin Kim, Hee Kyung Kim, Junsun Ryu, June Young Choi
Annals of Surgical Treatment and Research.2024; 106(1): 19. CrossRef
Five-Year Follow-Up of Health-Related Quality of Life in Differentiated Thyroid Cancer Patients Treated with Total Thyroidectomy and Radioiodine in Sweden: A Nationwide Prospective Cohort Study
Julia Winter, Erland Axelsson, Linda Björkhem-Bergman, Catharina Ihre Lundgren, Christel Hedman
Thyroid®.2024; 34(6): 713. CrossRef
Assessment of preoperative health-related quality of life in patients undergoing thyroidectomy based on patient-reported outcomes
Lei Liu, Yuqing Xiang, Lujing Xiong, Chao Li, Wei Dai, Jinchuan Hu, Chunyan Shui, Yuqiu Zhou, Xu Wang, Linjie Ma, Nan Xu, Bintao Hu, Yongcong Cai
Frontiers in Psychology.2024;[Epub] CrossRef
A Prospective Clinical Trial of Radiofrequency Ablation in Patients with Low-Risk Unifocal Papillary Thyroid Microcarcinoma Favoring Active Surveillance Over Surgery
Ji Ye Lee, Dong Gyu Na, Jung Suk Sim, Jin Yong Sung, Sun Wook Cho, Do Joon Park, Young Joo Park, Ji-hoon Kim
Thyroid®.2024; 34(9): 1126. CrossRef
Comparison of Patient-Reported Outcomes Between Active Surveillance and Immediate Lobectomy in Patients with Low-Risk Papillary Thyroid Microcarcinoma: Initial Findings from the KoMPASS Cohort
Min Joo Kim, Hojeong Won, Won Bae Kim, Eun Kyung Lee, Chang Yoon Lee, Sun Wook Cho, Han-Sang Baek, Yong Sang Lee, Yea Eun Kang, Sun Wook Kim, Ho-Cheol Kang, Jeongmin Lee, Mijin Kim, Min Ji Jeon, Jae Hoon Moon
Thyroid®.2024; 34(11): 1371. CrossRef
Quality of life in thyroid cancer
Torquil Watt, Thea Christoffersen, Mathilde Borring Brogaard, Jakob Bue Bjorner, Jens Bentzen, Christoffer Holst Hahn, Birte Nygaard, Ulla Feldt-Rasmussen
Best Practice & Research Clinical Endocrinology & Metabolism.2023; 37(1): 101732. CrossRef
Systematic review of health-related quality of life following thyroid cancer
Emma G Walshaw, Mike Smith, Dae Kim, Jonathan Wadsley, Anastasios Kanatas, Simon N. Rogers
Tumori Journal.2022; 108(4): 291. CrossRef
Factors affecting the health-promoting behavior of thyroid cancer survivors: comparison by stage of cancer survivorship
Kyung Ah Park, Sanghee Kim, Eui Geum Oh, Heejung Kim, Hang-Seok Chang, Soo Hyun Kim
Supportive Care in Cancer.2022; 30(4): 3429. CrossRef
Care and Management of Voice Change in Thyroid Surgery: Korean Society of Laryngology, Phoniatrics and Logopedics Clinical Practice Guideline
Chang Hwan Ryu, Seung Jin Lee, Jae-Gu Cho, Ik Joon Choi, Yoon Seok Choi, Yong Tae Hong, Soo Yeon Jung, Ji Won Kim, Doh Young Lee, Dong Kun Lee, GIljoon Lee, Sang Joon Lee, Young Chan Lee, Yong Sang Lee, Inn Chul Nam, Ki Nam Park, Young Min Park, Eui-Suk S
Clinical and Experimental Otorhinolaryngology.2022; 15(1): 24. CrossRef
Health-Related Quality of Life following Total Thyroidectomy and Lobectomy for Differentiated Thyroid Carcinoma: A Systematic Review
Vivianne Landry, Elizabeth Siciliani, Melissa Henry, Richard J. Payne
Current Oncology.2022; 29(7): 4386. CrossRef
Effect of radioiodine therapy under thyroid hormone withdrawal on health-related quality of life in patients with differentiated thyroid cancer
Hui Ming, Hui Yu, Yangbao Liu, Lihua Yang, Yuanhao Chen
Japanese Journal of Clinical Oncology.2022;[Epub] CrossRef
Thyroid disease‐specific quality of life questionnaires ‐ A systematic review
Verena Uslar, Caroline Becker, Dirk Weyhe, Navid Tabriz
Endocrinology, Diabetes & Metabolism.2022;[Epub] CrossRef
Effect of Initial Treatment Choice on 2-year Quality of Life in Patients with Low-risk Papillary Thyroid Microcarcinoma
Jae Hoon Moon, Chang Hwan Ryu, Sun Wook Cho, June Young Choi, Eun-Jae Chung, Jeong Hun Hah, Yul Hwangbo, Woo-Jin Jeong, Yuh-Seog Jung, Ji-hoon Kim, Min Joo Kim, Su-jin Kim, Yeo Koon Kim, Chang Yoon Lee, Eun Kyung Lee, Ji Ye Lee, Kyu Eun Lee, You Jin Lee,
The Journal of Clinical Endocrinology & Metabolism.2021; 106(3): 724. CrossRef
Singing voice range profile: New objective evaluation methods for voice change after thyroidectomy
Jungirl Seok, Youn Mi Ryu, Seong Ae Jo, Chang Yoon Lee, Yuh‐Seog Jung, Junsun Ryu, Chang Hwan Ryu
Clinical Otolaryngology.2021; 46(2): 332. CrossRef
A Propensity Score Matching Study Between Microwave Ablation and Radiofrequency Ablation in Terms of Safety and Efficacy for Benign Thyroid Nodules Treatment
Hao Jin, Jinrui Fan, Ligong Lu, Min Cui
Frontiers in Endocrinology.2021;[Epub] CrossRef
Adaptation transculturelle en Français du questionnaire évaluant la qualité de vie des patients opérés d’un cancer de la thyroïde : THYCA-QoL
Boris Scheller, Joseph Santini, Amélie Anota, Gilles Poissonnet, Y. Chateau, Renaud Schiappa, Danielle Benisvy, Olivier Dassonville, Alexandre Bozec, Emmanuel Chamorey
Bulletin du Cancer.2021; 108(7-8): 696. CrossRef
A Phase II Multi-Center, Non-Randomized, Parallel Group, Non-Inferiority Study to Compare the Efficacy of No Radioactive Iodine Remnant Ablation to Remnant Ablation Treatment in Low- to Intermediate-Risk of Papillary Thyroid Cancer: The MOREthyroid Trial
Eun Kyung Lee, You Jin Lee, Young Joo Park, Jae Hoon Moon, Ka Hee Yi, Koon Soon Kim, Joo Hee Lee, Sun Wook Cho, Jungnam Joo, Yul Hwangbo, Sujeong Go, Do Joon Park
Endocrinology and Metabolism.2020; 35(3): 571. CrossRef
Evaluation of Quality of Life in Patients with Differentiated Thyroid Cancer by Means of the Thyroid-Specific Patient-Reported Outcome Questionnaire: A 5-Year Longitudinal Study
Massimo Giusti, Stefano Gay, Lucia Conte, Francesca Cecoli, Lorenzo Mortara, Lara Vera, Eleonora Monti
European Thyroid Journal.2020; 9(5): 247. CrossRef
Longitudinal Assessment of Quality of Life According to Treatment Options in Low-Risk Papillary Thyroid Microcarcinoma Patients: Active Surveillance or Immediate Surgery (Interim Analysis of MAeSTro)
Sung Hye Kong, Junsun Ryu, Min Joo Kim, Sun Wook Cho, Young Shin Song, Ka Hee Yi, Do Joon Park, Yul Hwangbo, You Jin Lee, Kyu Eun Lee, Su-jin Kim, Woo-Jin Jeong, Eun-Jae Chung, Jeong Hun Hah, June Young Choi, Chang Hwan Ryu, Yuh-Seog Jung, Jae Hoon Moon,
Thyroid.2019; 29(8): 1089. CrossRef
Study Protocol of Multicenter Prospective Cohort Study of Active Surveillance on Papillary Thyroid Microcarcinoma (MAeSTro)
Jae Hoon Moon, Ji-hoon Kim, Eun Kyung Lee, Kyu Eun Lee, Sung Hye Kong, Yeo Koon Kim, Woo-jin Jung, Chang Yoon Lee, Roh-Eul Yoo, Yul Hwangbo, Young Shin Song, Min Joo Kim, Sun Wook Cho, Su-jin Kim, Eun Jae Jung, June Young Choi, Chang Hwan Ryu, You Jin Lee
Endocrinology and Metabolism.2018; 33(2): 278. CrossRef

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Survey of the Patterns of Using Stereotactic Ablative Radiotherapy for Early-Stage Non-small Cell Lung Cancer in Korea: Sanghyuk Song, Ji Hyun Chang, Hak Jae Kim, Yeon Sil Kim, Jin Hee Kim, Yong Chan Ahn, Jae-Sung Kim, Si Yeol Song, Sung Ho Moon, Moon June Cho, Seon Min Youn; Cancer Res Treat. 2017;49(3):688-694. Published online October 31, 2016; DOI: https://doi.org/10.4143/crt.2016.219

Abstract PDF Supplementary Material PubReader ePub

Purpose
Stereotactic ablative radiotherapy (SABR) is an effective emerging technique for early-stage non-small cell lung cancer (NSCLC). We investigated the current practice of SABR for early-stage NSCLC in Korea.
Materials and Methods
We conducted a nationwide survey of SABR for NSCLC by sending e-mails to all board-certified members of the Korean Society for Radiation Oncology. The survey included 23 questions focusing on the technical aspects of SABR and 18 questions seeking the participants’ opinions on specific clinical scenarios in the use of SABR for early-stage NSCLC. Overall, 79 radiation oncologists at 61/85 specialist hospitals in Korea (71.8%) responded to the survey.
Results
SABR was used at 33 institutions (54%) to treat NSCLC. Regarding technical aspects, the most common planning methods were the rotational intensity-modulated technique (59%) and the static intensity-modulated technique (49%). Respiratory motion was managed by gating (54%) or abdominal compression (51%), and 86% of the planning scans were obtained using 4-dimensional computed tomography. In the clinical scenarios, the most commonly chosen fractionation schedule for peripherally located T1 NSCLC was 60 Gy in four fractions. For centrally located tumors and T2 NSCLC, the oncologists tended to avoid SABR for radiotherapy, and extended the fractionation schedule.
Conclusion
The results of our survey indicated that SABR is increasingly being used to treat NSCLC in Korea. However, there were wide variations in the technical protocols and fractionation schedules of SABR for early-stage NSCLC among institutions. Standardization of SABR is necessary before implementing nationwide, multicenter, randomized studies.

Citations

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Guidelines for safe practice of stereotactic body (ablative) radiation therapy: RANZCR 2023 update
Howard Yu‐hao Liu, Nicholas Hardcastle, Michael Bailey, Shankar Siva, Anna Seeley, Tamara Barry, Jeremy Booth, Louis Lao, Michelle Roach, Stacey Buxton, David Thwaites, Matthew Foote
Journal of Medical Imaging and Radiation Oncology.2024; 68(2): 217. CrossRef
Technical Giants But Biologic Infants: Defining a More Sophisticated Role for Local Therapy in Metastatic Disease
Sophia C. Kamran, David Palma, Matthew S. Katz, Anthony L. Zietman
Seminars in Radiation Oncology.2021; 31(3): 200. CrossRef
MiR-223-3p regulates cell viability, migration, invasion, and apoptosis of non-small cell lung cancer cells by targeting RHOB
Shufang Li, Yuping Feng, Yuxia Huang, Yu Liu, Yanxi Wang, Yan Liang, Hui Zeng, Hong Qu, Ling Wei
Open Life Sciences.2020; 15(1): 389. CrossRef

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Survey of Medical Oncology Status in Korea (SOMOS-K): A National Survey of Medical Oncologists in the Korean Association for Clinical Oncology (KACO): Do Yeun Kim, Yun Gyoo Lee, Bong-Seog Kim; Cancer Res Treat. 2017;49(3):588-594. Published online September 23, 2016; DOI: https://doi.org/10.4143/crt.2016.313

Abstract PDF PubReader ePub

Purpose
This study was conducted to investigate the current role of medical oncologists in cancer care with a focus on increasing the recognition of medical oncology as an independent specialty.
Materials and Methods
Questionnaires modified from the Medical Oncology Status in Europe Survey dealing with oncology structure, resources, research, and patterns of care given by medical oncologists were selected. Several modifications were made to the questionnaire after feedback from the insurance and policy committee of the Korean Association for Clinical Oncology (KACO). The online survey was then sent to KACO members.
Results
A total of 214 medical oncologists (45.8% of the total inquiries), including 71 directors of medical oncology institutions, took the survey. Most institutions had various resources, including a medical oncology department (94.1%) and a department of radiation oncology (82.4%). There was an average of four medical oncologists at each institution. Medical oncologists were involved in various treatments from diagnosis to end-of-life care. They were also chemotherapy providers from a wide range of institutions that treated many types of solid cancers. In addition, 86.2% of the institutions conducted research.
Conclusion
This is the first national survey in Korea to show that medical oncologists are involved in a wide range of cancer treatments and care. This survey emphasizes the contributions and proper roles of medical oncologists in the evolving health care environment in Korea.

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Current status of medical oncology in Japan and changes over the most recent 7-year period: results of a questionnaire sent to designated cancer care hospitals
Makoto Arai, Izumi Ohno, Koji Takahashi, Meng Meng Fan, Akinobu Tawada, Chikashi Ishioka, Yuichi Takiguchi
Japanese Journal of Clinical Oncology.2021; 51(11): 1622. CrossRef
Practice patterns of multidisciplinary team meetings in Korean cancer care and patient satisfaction with this approach
Chi Hoon Maeng, Hee Kyung Ahn, Sung Yong Oh, Seungtaek Lim, Bong-Seog Kim, Do Yeun Kim
The Korean Journal of Internal Medicine.2020; 35(1): 205. CrossRef
Surrogate decision making of chemotherapy consent: do we really provide informed consent of chemotherapy for patients?
Jung Hye Kwon, Sun Kyung Baek, Bong-Seog Kim, Su-Jin Koh, Hee Kyung Ahn, Joo Han Lim, Chiyeon Lim, Do Yeun Kim
The Korean Journal of Internal Medicine.2019; 34(3): 626. CrossRef

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