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Ahrong Kim 5 Articles
A multicenter study of interobserver variability in pathologic diagnosis of papillary breast lesions on core needle biopsy with WHO classification
Hye Ju Kang, Sun Young Kwon, Ahrong Kim, Woo Gyeong Kim, Eun Kyung Kim, Ae Ree Kim, Chungyeul Kim, Soo Kee Min, So Young Park, Sun Hee Sung, Hye Kyoung Yoon, Ahwon Lee, Ji Shin Lee, Hyang Im Lee, Ho Chang Lee, Sung Chul Lim, Sun Young Jun, Min Jung Jung, Chang Won Jung, Soo Youn Cho, Eun Yoon Cho, Hye Jeong Choi, So Yeon Park, Jee Yeon Kim, In Ae Park, Youngmee Kwon
J Pathol Transl Med. 2021;55(6):380-387.   Published online October 6, 2021
  • 3,096 View
  • 167 Download
  • 1 Citations
AbstractAbstract PDFSupplementary Material
Papillary breast lesions (PBLs) comprise diverse entities from benign and atypical lesions to malignant tumors. Although PBLs are characterized by a papillary growth pattern, it is challenging to achieve high diagnostic accuracy and reproducibility. Thus, we investigated the diagnostic reproducibility of PBLs in core needle biopsy (CNB) specimens with World Health Organization (WHO) classification.
Diagnostic reproducibility was assessed using interobserver variability (kappa value, κ) and agreement rate in the pathologic diagnosis of 60 PBL cases on CNB among 20 breast pathologists affiliated with 20 medical institutions in Korea. This analysis was performed using hematoxylin and eosin (H&E) staining and immunohistochemical (IHC) staining for cytokeratin 5 (CK5) and p63. The pathologic diagnosis of PBLs was based on WHO classification, which was used to establish simple classifications (4-tier, 3-tier, and 2-tier).
On WHO classification, H&E staining exhibited ‘fair agreement’ (κ = 0.21) with a 47.0% agreement rate. Simple classifications presented improvement in interobserver variability and agreement rate. IHC staining increased the kappa value and agreement rate in all the classifications. Despite IHC staining, the encapsulated/solid papillary carcinoma (EPC/SPC) subgroup (κ = 0.16) exhibited lower agreement compared to the non-EPC/SPC subgroup (κ = 0.35) with WHO classification, which was similar to the results of any other classification systems.
Although the use of IHC staining for CK5 and p63 increased the diagnostic agreement of PBLs in CNB specimens, WHO classification exhibited a higher discordance rate compared to any other classifications. Therefore, this result warrants further intensive consensus studies to improve the diagnostic reproducibility of PBLs with WHO classification.


Citations to this article as recorded by  
  • High-risk and selected benign breast lesions diagnosed on core needle biopsy: Evidence for and against immediate surgical excision
    Aparna Harbhajanka, Hannah L. Gilmore, Benjamin C. Calhoun
    Modern Pathology.2022; 35(11): 1500.     CrossRef
Differential MicroRNA Expression between EGFR T790M and L858R Mutated Lung Cancer
Ji Yeon Kim, Woo Jeong Lee, Ha Young Park, Ahrong Kim, Dong Hoon Shin, Chang Hun Lee
J Pathol Transl Med. 2018;52(5):275-282.   Published online August 16, 2018
  • 5,070 View
  • 114 Download
  • 4 Citations
AbstractAbstract PDFSupplementary Material
MicroRNAs (miRNAs) are short, non-coding RNAs that mediate post-transcriptional gene regulation. They are commonly deregulated in human malignancies, including non-small cell lung cancer (NSCLC). The aim of this study is to investigate miRNA expression in T790M-mutated NSCLC resistant to epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors.
Six cases of resected NSCLC harboring the T790M mutation were examined. We performed miRNA time polymerase chain reaction (PCR) array profiling using EGFR T790M-mutated NSCLC and L858R-mutated NSCLC. Once identified, miRNAs that were differentially expressed between the two groups were validated by quantitative real-time polymerase chain reaction (qRT-PCR).
miRNA PCR array profiling revealed three up-regulated miRNAs whose expression levels were altered 4.0-fold or more in the EGFR T790M mutation group than in the L858R group: miR-1 (fold change, 4.384), miR-196a (fold change, 4.138), and miR-124 (fold change, 4.132). The three differentially expressed miRNAs were validated by qRT-PCR, and they were found to be overexpressed in the T790M group relative to L858R group. In particular, expression levels of miR-1 and miR-124 were significantly higher in the T790M group (p-value of miR-1 = .004, miR-124 = .007, miR-196a = .096).
MiR-1, miR-124, and miR-196a are overexpressed in EGFR T790M mutated NSCLC.


Citations to this article as recorded by  
  • Dynamic Evaluation of Circulating miRNA Profile in EGFR-Mutated NSCLC Patients Treated with EGFR-TKIs
    Alessandro Leonetti, Mjriam Capula, Roberta Minari, Giulia Mazzaschi, Alessandro Gregori, Btissame El Hassouni, Filippo Papini, Paola Bordi, Michela Verzè, Amir Avan, Marcello Tiseo, Elisa Giovannetti
    Cells.2021; 10(6): 1520.     CrossRef
  • Generation of osimertinib-resistant cells from epidermal growth factor receptor L858R/T790M mutant non-small cell lung carcinoma cell line
    Nalini Devi Verusingam, Yi-Chen Chen, Heng-Fu Lin, Chao-Yu Liu, Ming-Cheng Lee, Kai-Hsi Lu, Soon-Keng Cheong, Alan Han-Kiat Ong, Shih-Hwa Chiou, Mong-Lien Wang
    Journal of the Chinese Medical Association.2021; 84(3): 248.     CrossRef
  • Cell Behavior of Non-Small Cell Lung Cancer Is at EGFR and MicroRNAs Hands
    Sarah Sayed Hassanein, Sherif Abdelaziz Ibrahim, Ahmed Lotfy Abdel-Mawgood
    International Journal of Molecular Sciences.2021; 22(22): 12496.     CrossRef
  • The Roles of MicroRNA in Lung Cancer
    Kuan-Li Wu, Ying-Ming Tsai, Chi-Tun Lien, Po-Lin Kuo, Jen-Yu Hung
    International Journal of Molecular Sciences.2019; 20(7): 1611.     CrossRef
Nodular Fasciitis of the Parotid Gland, Masquerading as Pleomorphic Adenoma
Chung Su Hwang, Chang Hun Lee, Ahrong Kim, Nari Shin, Won Young Park, Min Gyoung Park, Do Youn Park
Korean J Pathol. 2014;48(5):366-370.   Published online October 27, 2014
  • 6,428 View
  • 42 Download
  • 4 Citations
AbstractAbstract PDF
It is difficult to distinguish nodular fasciitis (NF) from other neoplasm of the parotid gland, especially pleomorphic adenoma (PA) by fine needle aspiration cytology. A 39-year-old female noticed a mass in the parotid region. The aspirate material showed cohesive parts composed of the cells that had oval or spindle-shaped nuclei and relatively abundant cytoplasm and some cells with plasmacytoid features. The background substance was fibromyxoid. PA was diagnosed based on the cytologic findings. Subsequently, parotidectomy was performed and NF was diagnosed based on histologic and immunohistochemical findings. NF in the parotid region is rare and may be misdiagnosed as other benign or malignant tumors of the parotid gland. The clinical history of rapid growth and the presence of mitoses and inflammatory cells help to distinguish NF from PA. In addition, immunohistochemical stains for smooth muscle actin and CD68 are useful to confirm the diagnosis of NF.


Citations to this article as recorded by  
  • Condylar Reshape in Orthognathic Surgery: Morphovolumetric and Densitometric Analysis Based on 3D Imaging and Digital Workflow
    Vincenzo Abbate, Giovanni Audino, Giovanni Dell’Aversana Orabona, Marco Friscia, Paola Bonavolontà, Carmelo Lo Faro, Umberto Committeri, Carlos Navarro Cuéllar, Giorgio Iaconetta, Luigi Califano
    Journal of Maxillofacial and Oral Surgery.2022; 21(2): 501.     CrossRef
  • Nodular fasciitis of the submandibular gland
    Ting Suen Wong, Richard Wei Chern Gan, Laszlo Karsai, Bun Yin Winson Wong
    BMJ Case Reports.2022; 15(4): e245584.     CrossRef
  • Nodular fasciitis in cervicofacial region: a rare case description and literature review
    Vincenzo Abbate, Giovanni Dell’Aversana Orabona, Giovanni Audino, Antonio Romano, Paola Bonavolontà, Daniela Russo, Silvia Varricchio, Roberto Ferrigno, Giorgio Iaconetta, Luigi Califano
    Oral Surgery.2022; 15(4): 550.     CrossRef
  • Nodular fasciitis of the parotid gland engulfing the facial nerve: a conservative approach
    Stephen Bennett, Kristian Hutson, Olakunle Ajayi, Andreas Hilger
    BMJ Case Reports.2019; 12(10): e231203.     CrossRef
Microsatellite Instability Status in Gastric Cancer: A Reappraisal of Its Clinical Significance and Relationship with Mucin Phenotypes
Joo-Yeun Kim, Na Ri Shin, Ahrong Kim, Hyun-Jeong Lee, Won-young Park, Jee-Yeon Kim, Chang-Hun Lee, Gi-Young Huh, Do Youn Park
Korean J Pathol. 2013;47(1):28-35.   Published online February 25, 2013
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  • 89 Download
  • 54 Citations
AbstractAbstract PDF

Gastric cancers with microsatellite instabilities (MSI) have been reported to be associated with favorable prognosis. However, the significance of the effect of MSI on the clinicopathological features, as well as its association with mucin phenotype, remains unclear.


MSI status was assessed in 414 cases of gastric cancer using polymerase chain reaction analysis of five microsatellite loci, as recommended by National Cancer Institution criteria. The expression of mucins (MUC5AC, MUC6, MUC2, and CD10) was assessed.


Out of 414 total cases of gastric cancer, 380 (91.7%), 11 (2.7%), and 23 (5.6%) were microsatellite stable (MSS), low-level MSI (MSI-L), and high-level MSI (MSI-H), respectively. Compared to MSS/MSI-L, MSI-H gastric cancers were associated with older age (p=0.010), tumor size (p=0.014), excavated gross (p=0.042), intestinal type (p=0.028), aggressive behaviors (increase of T stage [p=0.009]), perineural invasion [p=0.022], and lymphovascular emboli [p=0.027]). MSI-H gastric cancers were associated with tumor necrosis (p=0.041), tumor-infiltrating lymphocytes (≥2/high power field, p<0.001), expanding growth patterns (p=0.038), gastric predominant mucin phenotypes (p=0.028), and MUC6 expression (p=0.016). Tumor necrosis (≥10% of mass, p=0.031), tumor-infiltrating lymphocytes (p<0.001), intestinal type (p=0.014), and gastric mucin phenotypes (p=0.020) could represent independent features associated with MSI-H gastric cancers. MSI-H intestinal type gastric cancers had a tendency for poor prognosis in univariate analysis (p=0.054) but no association in Cox multivariate analysis (p=0.197).


Our data suggest that MSI-H gastric cancers exhibit distinct aggressive biologic behaviors and a gastric mucin phenotype. This contradicts previous reports that describe MSI-H gastric cancer as being associated with favorable prognosis.


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    International Cancer Conference Journal.2022; 12(1): 59.     CrossRef
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    A. A. Musaelyan, V. D. Nazarov, A. S. Budnikova, S. V. Lapin, S. L. Vorobyev, V. L. Emanuel, A. A. Zakharenko, S. V. Orlov
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    Elisabetta Puliga, Simona Corso, Filippo Pietrantonio, Silvia Giordano
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    Zhenghao Cai, Junjun Ma, Shuchun Li, Abe Fingerhut, Jing Sun, Lu Zang, Chao Yan, Wentao Liu, Zhenggang Zhu, Minhua Zheng
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    BMC Cancer.2021;[Epub]     CrossRef
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    Keith T. Flaherty, Dung T. Le, Steven Lemery
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    Bruno Bockorny, Eirini Pectasides
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    Emily Goode, Elizabeth Smyth
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    Jung-Soo Pyo, Jin Hee Sohn, Guhyun Kang, Dong-Hoon Kim, Kyungeun Kim, In-Gu Do, Dong Hyun Kim
    Journal of Pathology and Translational Medicine.2015; 49(3): 249.     CrossRef
  • Correlation between microsatellite instability-high phenotype and occult lymph node metastasis in gastric carcinoma
    Jiwoon Choi, Soo Kyung Nam, Do Joong Park, Hwal Woong Kim, Hyung-Ho Kim, Woo Ho Kim, Hye Seung Lee
    APMIS.2015; 123(3): 215.     CrossRef
  • Clinicopathologic and molecular features associated with patient age in gastric cancer
    Ji Yeon Seo, Eun Hyo Jin, Hyun Jin Jo, Hyuk Yoon, Cheol Min Shin, Young Soo Park, Nayoung Kim, Hyun Chae Jung, Dong Ho Lee
    World Journal of Gastroenterology.2015; 21(22): 6905.     CrossRef
  • Molecular classification of gastric cancer: Towards a pathway-driven targeted therapy
    Ismael Riquelme, Kathleen Saavedra, Jaime A. Espinoza, Helga Weber, Patricia García, Bruno Nervi, Marcelo Garrido, Alejandro H. Corvalán, Juan Carlos Roa, Carolina Bizama
    Oncotarget.2015; 6(28): 24750.     CrossRef
  • A phylogenetic model for understanding the effect of gene duplication on cancer progression
    Qin Ma, Jaxk H. Reeves, David A. Liberles, Lili Yu, Zheng Chang, Jing Zhao, Juan Cui, Ying Xu, Liang Liu
    Nucleic Acids Research.2014; 42(5): 2870.     CrossRef
  • The analysis of microsatellite instability in extracolonic gastrointestinal malignancy
    Andrew S. Williams, Weei-Yuarn Huang
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JPTM : Journal of Pathology and Translational Medicine