Sumin Chae

Prof. Dr. Sumin Chae

Department of Surgery, Kyung Hee University School of Medicine, Kyung Hee University Medical Center, Seoul, Korea
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Research Focus & Metrics

Academic Career Length

8Years (2019-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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19 February 2021 in Journal of Clinical Medicine
Verified
Journal Article
Open access
PDF file
YCYoung Jun Chai
Young Jun Chai
SCSumin Chae
Sumin Chae
MOMoon Young Oh
Moon Young Oh
HKHyungju Kwon
Hyungju Kwon
WPWon Seo Park
Won Seo Park
The transoral endoscopic thyroidectomy vestibular approach (TOETVA) has excellent cosmetic effects and its popularity is increasing worldwide. We present our experience with TOETVA and its short-term outcomes. This study included 110 consecutive patients who underwent TOETVA at a single institution between July 2016 and June 2020. We analyzed clinicopathologic data, short-term postoperative outcomes, and learning curve using cumulative summation (CUSUM) analysis. Of the 110 patients who underwent TOETVA, 101 had malignant disease and 100 (90.9%) underwent lobectomy. The mean age was 39.7 ± 9.7 years, and the mean tumor size was 1.0 ± 0.7 cm (range, 0.3–3.6 cm). Operation time was 168.0 ± 63.4 min for total thyroidectomy, 111.0 ± 27.7 min for lobectomy, and 73.7 ± 18.1 min for isthmusectomy. Five patients (4.5%) experienced transient vocal cord palsy (VCP) and one (0.9%) had permanent VCP. The swallowing impairment index-6 score was 2.18 ± 3.21 at postoperative three months, and 0.97 ± 1.72 at postoperative six months. The learning curve for lobectomy was 58 cases in CUSUM analysis. TOETVA is a safe and feasible approach with an acceptable operation time and a low complication rate. This approach is a surgical option for patients who desire excellent cosmesis.

1 February 2020 in Journal of Laparoendoscopic & Advanced Surgical Techniques
Verified
Journal Article
Closed access
SCSumin Chae
Sumin Chae
SMSun Young Min
Sun Young Min
WPWon Seo Park
Won Seo Park
Introduction: Oncological and surgical safeties are pivotal issues of cancer operations. Robotic thyroidectomy adds cosmetic advantage to those safeties. We have performed bilateral axillo-breast approach robotic thyroidectomies (BABART) since 2009 and recently started transoral robotic thyroidectomy (TORT) in 2017. This study aimed to compare the surgical outcomes of a single surgeon's initial TORT and BABART. Materials and Methods: We retrospectively collected data of 103 patients who underwent robotic thyroid lobectomy for papillary thyroid cancer and analyzed the first 14 and 56 cases of TORT and BABART, respectively, after propensity score matching. The surgeon performed 224 BABARTs before starting TORT. Results: There were no significant differences between the BABART and TORT groups in mean age (40.02 ± 9.37 versus 38.69 ± 9.21 years, respectively; P = .7520), sex distribution ( P = .3697), mean body mass index (23.60 ± 4.31 versus 23.87 ± 2.45 kg/m 2 , respectively; P = .4737), and tumor size (0.75 ± 0.35 versus 0.76 ± 0.29 cm, respectively; P = .9969). The TORT group had a longer operative time than the BABART group by 78.04 minutes ( P < .0001). The visual analog scale pain scores on postoperative day (POD) 2 and POD 3 were higher in the TORT than the BABART group by 0.59 and 0.77, respectively ( P = .0227 and .0119, respectively). The number of retrieved lymph nodes and unintended parathyroidectomies was similar in the two groups. There were no severe complications such as tracheal injury, transection of recurrent laryngeal nerve, or surgical site infection. Conclusion: Our study suggests that both BABART and TORT are safe and feasible during the initial period. TORT can be undertaken without any adverse event if the operator is experienced with other robotic thyroidectomy. The patients may choose the surgical approach based on their preference.

1 January 2019 in Journal of Breast Cancer
Verified
Journal Article
Open access
KYKyung-Hwak Yoon
Kyung-Hwak Yoon
SCSumin Chae
Sumin Chae
EKEunyoung Kang
Eunyoung Kang
HSHee-Chul Shin
Hee-Chul Shin
JKJee Hyun Kim
Jee Hyun Kim
EKEun-Kyu Kim
Eun-Kyu Kim
Yoon KH, et al. J Breast Cancer. 2019 Jul;22:e47. https://doi.org/10.4048/jbc.2019.22.e47

23 January 2025 in Journal of Clinical Medicine
Verified
Journal Article
Open access
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MKMinji Kwon
Minji Kwon
BKBo-Hyung Kim
Bo-Hyung Kim
SMSun Young Min
Sun Young Min
SCSumin Chae
Sumin Chae
Background/Objectives: This nationwide retrospective study evaluated the effects of anticancer therapy on osteoporosis in 126,132 Korean breast cancer survivors from 2002 to 2020. Methods: The Cox proportional hazards model assessed the effects of treatment on osteoporosis. To circumvent the guarantee-time bias for osteoporosis development, a landmark analysis was employed. A stabilized inverse probability of treatment weighting was performed to control any confounding bias. The propensity score was calculated using a multinomial logistic regression model with age, national health insurance, and the Charlson comorbidity index. Results: During a median follow-up of 4.22 years, 28,603 cases of osteoporosis were documented. Aromatase inhibitors (AIs) were associated with a higher risk of osteoporosis development in comparison to tamoxifen (TMX) or chemotherapy. Notably, AIs administered subsequent to a combination of chemotherapy and anti-HER2 therapy exhibited the highest risk of osteoporosis development. Subgroup analysis revealed that the mean interval from breast cancer diagnosis to osteoporosis development was 5.00 years for women diagnosed with cancer at age < 50 and 3.89 years for those diagnosed at age ≥ 60. TMX increased the risk of osteoporosis in women diagnosed with cancer at age < 50, whereas chemotherapy was not a significant risk factor for osteoporosis development in those diagnosed at age ≥ 60. The impact of anticancer therapy on osteoporosis development was more pronounced in women diagnosed with breast cancer at a younger age compared to those diagnosed at an older age. Conclusions: Effective prevention and active management strategies should be implemented to address bone loss in both younger and older breast cancer patients.

1 August 2021 in Asian Journal of Surgery
Verified
Journal Article
Open access
SCSumin Chae
Sumin Chae
EKEun-Kyu Kim
Eun-Kyu Kim
YJYe Rang Jang
Ye Rang Jang
Angela Soeun LeeAngela Soeun Lee
Angela Soeun Lee
SKSeul Ki Kim
Seul Ki Kim
EKEunyoung Kang
Eunyoung Kang
This study aimed to compare the quality of life (QOL), psychosocial status, sexual function, and menopausal symptoms between the risk-reducing salpingo-oophorectomy (RRSO) and non-RRSO groups comprising BRCA mutation carriers and to evaluate the effect of timing of RRSO on those aspects. This cross-sectional study recruited BRCA mutation carriers aged ≥35 years between September 2015 and September 2016. Demographic data of carriers were collected. Outcomes were measured using the questionnaires addressing QOL, anxiety, depression, optimism, sexual function, and menopausal symptoms. Of 52 participants, 30 (57.7%) underwent RRSO, whereas 22 (42.3%) did not. In the RRSO group, 16 (53.3%) and 14 (46.7%) women underwent RRSO before and after menopause, respectively. The mean age in the RRSO group was higher than that in the non-RRSO group (49.8 vs. 42.1 years, respectively, p = 0.002). The scores for QOL, anxiety, depression, optimism, sexual function, and menopausal symptoms were similar between both groups. In the multivariate analysis, RRSO uptake was associated with worse physical QOL (coefficient, -5.350; 95% confidence interval, -10.593 to -0.108). With respect to the timing of RRSO, only the mental QOL was significantly lower in the postmenopausal RRSO group than in the premenopausal RRSO group (39.2 vs. 43.7, respectively, p = 0.043). We could not find any difference in mental QOL, psychosocial status, sexual function, and menopausal symptoms between the RRSO and non-RRSO groups. RRSO uptake only affected worse physical QOL. These results will help physicians counsel BRCA mutation carriers about the effect of RRSO on QOL.

27 November 2022 in Current Oncology
Verified
Journal Article
Open access
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SCSumin Chae
Sumin Chae
SMSun Young Min
Sun Young Min
We aimed to compare the prognosis of patients with close resection margins after breast-conserving surgery (BCS) with that of patients with negative margins and identified predictors of residual disease. A total of 542 patients with breast cancer who underwent BCS between 2003 and 2019 were selected and divided into the close margin (114 patients) and negative margin (428 patients) groups. The median follow-up period was 72 (interquartile range, 42–113) months. Most patients received radiation therapy (RTx) and systemic therapy according to their stage and molecular subtype. The 10-year locoregional recurrence-free survival rates of the close and negative margin groups were 88.2% and 95.5%, respectively (p = 0.001). Multivariable analysis showed that adjuvant RTx and margin status after definitive surgery were significantly associated with locoregional recurrence. Of the 57 patients who underwent re-excision, 34 (59.6%) had residual disease. Multivariable analysis revealed that a histological type of positive or close margins and multifocality were independent predictive factors for residual disease. Although the current guidelines suggest that no ink on tumor is an adequate margin after BCS, a close resection margin may be associated with locoregional failure. The treatment strategy for close resection margins after BCS should be based on individual clinicopathological features.