Hyesun Park

Dr. Hyesun Park

orcid

Research Focus & Metrics

Academic Career Length

10Years (2017-Present)

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

Representative Publications

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1 January 2021 in Radiology
Verified
Journal Article
Closed access
BGBabina Gosangi
Babina Gosangi
HPHyesun Park
Hyesun Park
RTRichard Thomas
Richard Thomas
RGRahul Gujrathi
Rahul Gujrathi
CBCamden P. Bay
Camden P. Bay
BKBharti Khurana
Bharti Khurana
Background Intimate partner violence (IPV) is a global social and public health problem but published literature regarding the exacerbation of physical IPV during the COVID-19 pandemic is lacking. ...

6 August 2019 in Radiology
Verified
Journal Article
Closed access
HPHyesun Park
Hyesun Park
LSLynette M. Sholl
Lynette M. Sholl
HHHiroto Hatabu
Hiroto Hatabu
MAMark M. Awad
Mark M. Awad
MNMizuki Nishino
Mizuki Nishino
Advances in characterization of molecular and genomic abnormalities specific to lung cancer have made precision therapy the current standard of care for lung cancer treatment. This article will provide a cutting-edge review of imaging of lung cancer in the current era of precision medicine. The focus of the article includes (a) an update on the recent advances in precision therapy for non-small cell lung cancer and their implications on imaging; (b) molecular and genomic biomarkers and pitfalls of image interpretations for lung cancer precision therapy; and (c) review of the current approaches and future directions of precision imaging for lung cancer, emphasizing emerging observations in longitudinal tumor kinetics, radiomics, and molecular and functional imaging. The article is designed to help radiologists to remain up to date in the rapidly evolving world of lung cancer therapy and serve as key members of multidisciplinary teams caring for these patients.

26 January 2017 in American Journal of Neuroradiology
Verified
Journal Article
Open access
PDF file
JPJ.E. Park
J.E. Park
JLJ.H. Lee
J.H. Lee
KRKyeong Hwa Ryu
Kyeong Hwa Ryu
HPHyesun Park
Hyesun Park
MCM.S. Chung
M.S. Chung
JBJung Hwan Baek
Jung Hwan Baek
BACKGROUND AND PURPOSE: Contrast-enhanced CT protocols for papillary thyroid cancer are yet to be optimized. Our aim was to compare the diagnostic accuracy of arterial phase CT and delayed-phase CT protocols for lateral cervical lymph node metastasis from papillary thyroid carcinoma by using the lymph node tissue attenuation. MATERIALS AND METHODS: This retrospective study included 327 lateral cervical lymph nodes (177 metastatic and 150 benign) from 131 patients with papillary thyroid carcinoma (107 initially diagnosed and 24 recurrences). Patients underwent CT by using 1 of 3 protocols: a 70-second (A) or a 35-second (B) delay with 100 mL of iodinated IV contrast or a 25-second delay with 75 mL of IV contrast (C). Two readers independently measured and compared lymph node tissue attenuation between metastatic and benign lymph nodes. An area under the receiver operating characteristic curve analysis was performed to differentiate metastatic and benign lymph nodes after multiple comparison correction for clustered data and was compared across the protocols. RESULTS: The difference in mean lymph node tissue attenuation between metastatic and benign lymph nodes was maximum in protocol C (P < .001 for both readers). Protocol C showed the highest diagnostic performance (area under the receiver operating characteristic curve, 0.88–0.92) compared with protocol A (area under the receiver operating characteristic curve, 0.73–0.74, P < .001 for both readers) and B (area under the receiver operating characteristic curve, .63–0.65, P < .01 for both readers). The sensitivity, specificity, positive predictive value, and negative predictive value of lymph node tissue attenuation by using a 99-HU cutoff value were 83%–87%, 93.7%–97.9%, 95.1%–97.3%, and 81.2%–87%. CONCLUSIONS: A combination of 25-second delay CT and 75 mL of iodinated IV contrast can improve the diagnostic accuracy for lateral lymph node metastasis from papillary thyroid carcinoma compared with a combination of a 35- or 70-second delay with 100-mL of iodinated IV contrast.

1 April 2019 in Ultrasonography
Verified
Journal Article
Open access
PDF file
HPHyesun Park
Hyesun Park
YYYounghee Yim
Younghee Yim
JBJung Hwan Baek
Jung Hwan Baek
YCYoung Jun Choi
Young Jun Choi
YSYoung Kee Shong
Young Kee Shong
JLJeong Hyun Lee
Jeong Hyun Lee
We compared the efficacy and safety of two ethanol ablation techniques-ethanol aspiration and ethanol retention-for benign cystic thyroid nodules. From October 2008 to September 2013, 113 patients who were treated using the ethanol aspiration technique (February 2008 to December 2010) and 108 patients who were treated using the ethanol retention technique (January 2011 to September 2013) were enrolled (male:female ratio, 53:168; mean age, 48.1 years; range, 18 to 80 years). The patient sample had 94 cystic and 127 predominantly cystic thyroid nodules. The volume reduction ratio (VRR) at the last follow-up, improvements in symptoms and cosmetic scores, vascularity, pain, and major complications were evaluated and compared between the ethanol aspiration group and ethanol retention group. We also performed a subgroup analysis according to the proportion of the solid component, in which VRR, symptom and cosmetic scores, and therapeutic success were compared. No statistically significant difference in VRR was found between the ethanol retention group and the ethanol aspiration group (83.2%±32.8% vs. 86.1%±18.4%, P=0.416) while patients who underwent the retention technique were more likely to experience pain after treatment (P=0.001). VRR, symptom and cosmetic scores, and therapeutic success did not significantly differ between techniques in either group in the subgroup analysis. The ethanol aspiration technique may be preferable to the ethanol retention technique for treating benign cystic and predominantly cystic thyroid nodules, because a comparable VRR can be expected with less pain.

25 April 2023 in Clinical Cancer Research
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Journal Article
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BRBiagio Ricciuti
Biagio Ricciuti
AEArielle Elkrief
Arielle Elkrief
JAJoao Alessi
Joao Alessi
XWXinan Wang
Xinan Wang
YLYvonne Li
Yvonne Li
MCMichael L. Cheng
Michael L. Cheng
Purpose: ATM is the most commonly mutated DNA damage and repair gene in non–small cell lung cancer (NSCLC); however, limited characterization has been pursued. Experimental Design: Clinicopathologic, genomic, and treatment data were collected for 5,172 patients with NSCLC tumors which underwent genomic profiling. ATM IHC was performed on 182 NSCLCs with ATM mutations. Multiplexed immunofluorescence was performed on a subset of 535 samples to examine tumor-infiltrating immune cell subsets. Results: A total of 562 deleterious ATM mutations were identified in 9.7% of NSCLC samples. ATM-mutant (ATMMUT) NSCLC was significantly associated with female sex (P = 0.02), ever smoking status (P < 0.001), non-squamous histology (P = 0.004), and higher tumor mutational burden (DFCI, P < 0.0001; MSK, P < 0.0001) compared with ATM–wild-type (ATMWT) cases. Among 3,687 NSCLCs with comprehensive genomic profiling, co-occurring KRAS, STK11, and ARID2 oncogenic mutations were significantly enriched among ATMMUT NSCLCs (Q < 0.05), while TP53 and EGFR mutations were enriched in ATMWT NSCLCs. Among 182 ATMMUT samples with ATM IHC, tumors with nonsense, insertions/deletions, or splice site mutations were significantly more likely to display ATM loss by IHC (71.4% vs. 28.6%; P < 0.0001) compared with tumors with only predicted pathogenic missense mutations. Clinical outcomes to PD-(L)1 monotherapy (N = 1,522) and chemo-immunotherapy (N = 951) were similar between ATMMUT and ATMWT NSCLCs. Patients with concurrent ATM/TP53 mutations had significantly improved response rate and progression-free survival with PD-(L)1 monotherapy. Conclusions: Deleterious ATM mutations defined a subset of NSCLC with unique clinicopathologic, genomic, and immunophenotypic features. Our data may serve as resource to guide interpretation of specific ATM mutations in NSCLC.

3 May 2022 in Emergency Radiology
Verified
Journal Article
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RGRahul Gujrathi
Rahul Gujrathi
ATAnji Tang
Anji Tang
RTRichard Thomas
Richard Thomas
HPHyesun Park
Hyesun Park
BGBabina Gosangi
Babina Gosangi
BKBharti Khurana
Bharti Khurana