Journal of Pathology and Translational Medicine

Hoon Kyu Oh

3 Articles

Diagnostic proficiency test using digital cytopathology and comparative assessment of whole slide images of cytologic samples for quality assurance program in Korea: Yosep Chong, Soon Auck Hong, Hoon Kyu Oh, Soo Jin Jung, Bo-Sung Kim, Ji Yun Jeong, Ho-Chang Lee, Gyungyub Gong; J Pathol Transl Med. 2023;57(5):251-264. Published online August 24, 2023; DOI: https://doi.org/10.4132/jptm.2023.07.17

1,856 View
260 Download

Abstract PDF Supplementary Material: Background
The Korean Society for Cytopathology introduced a digital proficiency test (PT) in 2021. However, many doubtful opinions remain on whether digitally scanned images can satisfactorily present subtle differences in the nuclear features and chromatin patterns of cytological samples.
Methods
We prepared 30 whole-slide images (WSIs) from the conventional PT archive by a selection process for digital PT. Digital and conventional PT were performed in parallel for volunteer institutes, and the results were compared using feedback. To assess the quality of cytological assessment WSIs, 12 slides were collected and scanned using five different scanners, with four cytopathologists evaluating image quality through a questionnaire.
Results
Among the 215 institutes, 108 and 107 participated in glass and digital PT, respectively. No significant difference was noted in category C (major discordance), although the number of discordant cases was slightly higher in the digital PT group. Leica, 3DHistech Pannoramic 250 Flash, and Hamamatsu NanoZoomer 360 systems showed comparable results in terms of image quality, feature presentation, and error rates for most cytological samples. Overall satisfaction was observed with the general convenience and image quality of digital PT.
Conclusions
As three-dimensional clusters are common and nuclear/chromatin features are critical for cytological interpretation, careful selection of scanners and optimal conditions are mandatory for the successful establishment of digital quality assurance programs in cytology.

Current status of cytopathology practices in Korea: annual report on the Continuous Quality Improvement program of the Korean Society for Cytopathology for 2018: Yosep Chong, Haeyoen Jung, Jung-Soo Pyo, Soon Won Hong, Hoon Kyu Oh; J Pathol Transl Med. 2020;54(4):318-331. Published online April 15, 2020; DOI: https://doi.org/10.4132/jptm.2020.02.26

4,502 View
104 Download
4 Web of Science
4 Crossref

Background
The Korean Society for Cytopathology has conducted the Continuous Quality Improvement program for cytopathology laboratories in Korea since 1995. In 2018 as part of the program, an annual survey of cytologic data was administered to determine the current status of cytopathology practices in Korea. Methods: A questionnaire was administered to 211 cytopathology laboratories. Individual laboratories submitted their annual statistics regarding cytopathology practices, diagnoses of gynecologic samples, inadequacy rates, and gynecologic cytology-histology correlation review (CHCR) data for 2018. In addition, proficiency tests and sample adequacy assessments were conducted using five consequent gynecologic slides. Results: Over 10 million cytologic exams were performed in 2018, and this number has almost tripled since this survey was first conducted in 2004 (compounded annual growth rate of 7.2%). The number of non-gynecologic samples has increased gradually over time and comprised 24% of all exams. The overall unsatisfactory rate was 0.14%. The ratio of the cases with atypical squamous cells to squamous intraepithelial lesions accounted for up to 4.24. The major discrepancy rate of the CHCR in gynecologic samples was 0.52%. In the proficiency test, the major discrepancy rate was approximately 1%. In the sample adequacy assessment, a discrepancy was observed in 0.1% of cases. Conclusions: This study represents the current status of cytopathology practices in Korea, illustrating the importance of the Continuous Quality Improvement program for increasing the accuracy and credibility of cytopathologic exams as well as developing national cancer exam guidelines and government projects on the prevention and treatment of cancer.

Citations

Citations to this article as recorded by

Diagnostic proficiency test using digital cytopathology and comparative assessment of whole slide images of cytologic samples for quality assurance program in Korea
Yosep Chong, Soon Auck Hong, Hoon Kyu Oh, Soo Jin Jung, Bo-Sung Kim, Ji Yun Jeong, Ho-Chang Lee, Gyungyub Gong
Journal of Pathology and Translational Medicine.2023; 57(5): 251. CrossRef
Recent Application of Artificial Intelligence in Non-Gynecological Cancer Cytopathology: A Systematic Review
Nishant Thakur, Mohammad Rizwan Alam, Jamshid Abdul-Ghafar, Yosep Chong
Cancers.2022; 14(14): 3529. CrossRef
Re-Increasing Trends in Thyroid Cancer Incidence after a Short Period of Decrease in Korea: Reigniting the Debate on Ultrasound Screening
Chan Kwon Jung, Ja Seong Bae, Young Joo Park
Endocrinology and Metabolism.2022; 37(5): 816. CrossRef
Current status of cytopathology practice in Korea: impact of the coronavirus pandemic on cytopathology practice
Soon Auck Hong, Haeyoen Jung, Sung Sun Kim, Min-Sun Jin, Jung-Soo Pyo, Ji Yun Jeong, Younghee Choi, Gyungyub Gong, Yosep Chong
Journal of Pathology and Translational Medicine.2022; 56(6): 361. CrossRef

Significance of Intratumoral Fibrosis in Clear Cell Renal Cell Carcinoma: Jae Won Joung, Hoon Kyu Oh, Sun Jae Lee, Young Ah Kim, Hyun Jin Jung; J Pathol Transl Med. 2018;52(5):323-330. Published online August 19, 2018; DOI: https://doi.org/10.4132/jptm.2018.07.21

6,146 View
152 Download
16 Web of Science
15 Crossref

Abstract PDF

Background
Intratumoral fibrosis (ITF) is a frequent histologic finding in solid organ tumors. Renal cell carcinoma (RCC) is a highly vascularized tumor with different shapes and degrees of ITF and inflammation. ITF is a poor prognostic factor, especially in breast cancer, and is related to intratumoral necrosis (ITN) and intratumoral inflammation (ITI). However, the significance of ITF in RCC has not been fully studied. In this study, we evaluate the relationships between ITF and other clinicopathologic parameters associated with RCC prognosis.
Methods
ITF was evaluated in 204 clear cell renal cell carcinoma (CCRCC) specimens according to presence and grade of fibrosis, degree of ITI, and presence of ITN. Lysyl oxidase (LOX) expression in tumor cells was also evaluated with clinicopathologic parameters.
Results
Among 204 CCRCC cases, 167 (81.7%) showed ITF, 71 (34.8%) showed ITI, 35 (17.2%) showed ITN, and 111 (54.4%) showed LOX expression. ITF correlated with Fuhrman nuclear grade (p = .046), lymphovascular invasion (LVI) (p = .027), and ITN (p = .036). Patients with ITF had a poor five-year overall survival rate (p = .104).
Conclusions
ITF is related to other poor prognostic factors in CCRCC, such as Fuhrman nuclear grade, ITN, and LVI, but ITF itself had no significant correlation with prognosis of CCRCC.

Citations

Citations to this article as recorded by

New insights into fibrotic signaling in renal cell carcinoma
Jiao-Yi Chen, Wai-Han Yiu, Patrick Ming-Kuen Tang, Sydney Chi-Wai Tang
Frontiers in Cell and Developmental Biology.2023;[Epub] CrossRef
Tumor-associated fibrosis impairs the response to immunotherapy
Angha Naik, Andrew Leask
Matrix Biology.2023; 119: 125. CrossRef
Decreased renal expression of PAQR5 is associated with the absence of a nephroprotective effect of progesterone in a rat UUO model
P. A. Abramicheva, D. S. Semenovich, L. D. Zorova, I. B. Pevzner, I. A. Sokolov, V. A. Popkov, E. P. Kazakov, D. B. Zorov, E. Y. Plotnikov
Scientific Reports.2023;[Epub] CrossRef
Intratumoral fibrosis and patterns of immune infiltration in clear cell renal cell carcinoma
Songchen Han, Wenbo Yang, Caipeng Qin, Yiqing Du, Mengting Ding, Huaqi Yin, Tao Xu
BMC Cancer.2022;[Epub] CrossRef
Siglec-F–expressing neutrophils are essential for creating a profibrotic microenvironment in renal fibrosis
Seungwon Ryu, Jae Woo Shin, Soie Kwon, Jiwon Lee, Yong Chul Kim, Yoe-Sik Bae, Yong-Soo Bae, Dong Ki Kim, Yon Su Kim, Seung Hee Yang, Hye Young Kim
Journal of Clinical Investigation.2022;[Epub] CrossRef
The atypical sphingosine 1‐phosphate variant, d16:1 S1P, mediates CTGF induction via S1P2 activation in renal cell carcinoma
Melanie Glueck, Alexander Koch, Robert Brunkhorst, Nerea Ferreiros Bouzas, Sandra Trautmann, Liliana Schaefer, Waltraud Pfeilschifter, Josef Pfeilschifter, Rajkumar Vutukuri
The FEBS Journal.2022; 289(18): 5670. CrossRef
The Synergistic Cooperation between TGF-β and Hypoxia in Cancer and Fibrosis
Pramod Mallikarjuna, Yang Zhou, Maréne Landström
Biomolecules.2022; 12(5): 635. CrossRef
In Vitro Characterization of Renal Drug Transporter Activity in Kidney Cancer
Pedro Caetano-Pinto, Nathanil Justian, Maria Dib, Jana Fischer, Maryna Somova, Martin Burchardt, Ingmar Wolff
International Journal of Molecular Sciences.2022; 23(17): 10177. CrossRef
PD-1 immunobiology in glomerulonephritis and renal cell carcinoma
Colleen S. Curran, Jeffrey B. Kopp
BMC Nephrology.2021;[Epub] CrossRef
Intratumoral Fibrosis in Facilitating Renal Cancer Aggressiveness: Underlying Mechanisms and Promising Targets
Chao Hu, Yufeng Zhao, Xuanchuan Wang, Tongyu Zhu
Frontiers in Cell and Developmental Biology.2021;[Epub] CrossRef
What Mediates Fibrosis in the Tumor Microenvironment of Clear Renal Cell Carcinoma
Wenbo Yang, Caipeng Qin, Jingli Han, Songchen Han, Wenjun Bai, Yiqing Du, Tao Xu
Frontiers in Genetics.2021;[Epub] CrossRef
Kidney Cancer and Chronic Kidney Disease: Too Close for Comfort
Pedro Caetano Pinto, Cindy Rönnau, Martin Burchardt, Ingmar Wolff
Biomedicines.2021; 9(12): 1761. CrossRef
The Significance of Fibrosis Quantification as a Marker in Assessing Pseudo-Capsule Status and Clear Cell Renal Cell Carcinoma Prognosis
Caipeng Qin, Huaqi Yin, Huixin Liu, Feng Liu, Yiqing Du, Tao Xu
Diagnostics.2020; 10(11): 895. CrossRef
The challenges of adoptive cell transfer in the treatment of human renal cell carcinoma
Zuzana Strizova, Jirina Bartunkova, Daniel Smrz
Cancer Immunology, Immunotherapy.2019; 68(11): 1831. CrossRef
Procollagen-lysine, 2-oxoglutarate 5-dioxygenases 1, 2, and 3 are potential prognostic indicators in patients with clear cell renal cell carcinoma
Wen-Hao Xu, Yue Xu, Jun Wang, Xi Tian, Junlong Wu, Fang-Ning Wan, Hong-Kai Wang, Yuan-Yuan Qu, Hai-Liang Zhang, Ding-Wei Ye
Aging.2019; 11(16): 6503. CrossRef

Author index