Journal of Pathology and Translational Medicine

Kyo Young Lee

7 Articles

Current state of cytopathology residency training: a Korean national survey of pathologists: Uiju Cho, Tae Jung Kim, Wan Seop Kim, Kyo Young Lee, Hye Kyoung Yoon, Hyun Joo Choi; J Pathol Transl Med. 2023;57(2):95-101. Published online March 14, 2023; DOI: https://doi.org/10.4132/jptm.2023.01.06

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Abstract PDF Supplementary Material: Background
Although the Korean Society for Cytopathology has developed educational goals as guidelines for cytopathology education in Korea, there is still no systematic approach to cytopathology education status for pathology residents. Furthermore, satisfaction with cytopathology education and with the outcome of the current training/educational program has not been investigated in Korea. This study aimed to obtain comprehensive data on the current state of cytopathology education for residents and evaluate education outcomes.
Methods
An online survey was conducted in December 2020 for the board-certified pathologists and training residents registered as members of the Korean Society for Cytopathology. The questionnaire comprised questions that investigated the current status of cytopathology at each training institution, the degree of satisfaction with the work and education related to cytopathology, outcomes of cytopathology training, and educational accomplishments.
Results
Of the participants surveyed, 12.3% (132/1,075) completed the questionnaire, and 36.8% (32/87) of cytopathology residents participated. The mean overall satisfaction with cytopathology education was 3.1 points (on a 1- to 5-point scale, 5: very satisfied). The most frequent suggestion among the free description format responses was to expand educational opportunities, such as online education opportunities, outside of the individual institutions.
Conclusions
Our results showed that cytopathology training in Korea needs further improvement. We expect that this study will inform systematic training of competent medical personnel armed with broad cytopathology knowledge and strong problem-solving abilities.

Peripheral type squamous cell carcinoma of the lung: clinicopathologic characteristics in comparison to the central type: Yeoun Eun Sung, Uiju Cho, Kyo Young Lee; J Pathol Transl Med. 2020;54(4):290-299. Published online June 17, 2020; DOI: https://doi.org/10.4132/jptm.2020.05.04

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Background
Squamous cell carcinomas (SqCCs) of the lung are known to arise more often in a central area but reports of peripheral SqCCs have increased, with a pathogenesis that is obscured. In this study, the clinicopathologic characteristics of peripheral lung SqCCs were studied and compared with those of the central type.
Methods
This study included 63 peripheral lung SqCCs and 48 randomly selected central cases; hematoxylin and eosin-stained slides of surgically resected specimens were reviewed in conjunction with radiologic images and clinical history. Cytokeratin-7 immunohistochemical staining of key slides and epidermal growth factor receptor (EGFR)/KRAS mutations tested by DNA sequencing were also included.
Results
Stages of peripheral SqCCs were significantly lower than central SqCCs (p=.016). Cystic change of the mass (p=.007), presence of interstitial fibrosis (p=0.007), and anthracosis (p=.049) in the background lung were significantly associated with the peripheral type. Cytokeratin-7 positivity was also higher in peripheral SqCCs with cutoffs of both 10% and 50% (p=.011). Pathogenic mutations in EGFR and KRAS were observed in only one case out of the 72 evaluated. The Cox proportional hazard model indicated a significantly better disease-free survival (p=.009) and the tendency of better overall survival (p=.106) in the peripheral type.
Conclusions
In peripheral type, lower stage is a favorable factor for survival but more frequent interstitial fibrosis and older age are unfavorable factors. Multivariate Cox analysis revealed that peripheral type is associated with better disease-free survival. The pathogenesis of peripheral lung SqCCs needs further investigation, together with consideration of the background lung conditions.

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Lung Cancer.2023; 176: 31. CrossRef
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Selection of the surgical approach for patients with cStage IA lung squamous cell carcinoma: A population-based propensity score matching analysis
Shengteng Shao, Guisong Song, Yuanyong Wang, Tengfei Yi, Shuo Li, Fuhui Chen, Yang Li, Xiaotong Liu, Bin Han, Yuhong Liu
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Erdheim-Chester Disease Involving Lymph Nodes and Liver Clinically Mimicking Lymphoma: A Case Report: Yeoun Eun Sung, Yoon Seo Lee, Jieun Lee, Kyo Young Lee; J Pathol Transl Med. 2018;52(3):183-190. Published online December 27, 2017; DOI: https://doi.org/10.4132/jptm.2017.10.16

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Abstract PDF

Erdheim-Chester disease (ECD) is a rare non-Langerhans cell histiocytosis and multisystem disease. First described in 1930, there are no more than 750 cases reported. The etiology remains unknown, but a majority of cases of ECD and Langerhans cell histiocytosis were found to have clonal mutations involving genes of the mitogen-activated protein kinase pathway. We recently encountered a 53-year-old male patient with extensive ECD involving the systemic lymph nodes, pleura, liver, and long bones clinically mimicking malignant lymphoma. Biopsies were performed at multiple sites, including a pleural mass, an external iliac lymph node, bone marrow, and the liver. Based on histopathological and immunohistochemical findings of positivity for CD68 and negativity for CD1a and S-100, the patient was diagnosed with ECD. Interferon-α was administered as the first-line treatment, but the patient rapidly progressed to hepatic failure after 2 months of treatment. We report this rare case of ECD clinically mimicking malignant lymphoma and diagnosed by careful pathological review.

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Erdheim Chester Disease Mimicking Lymphoma: A Case Report
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Primary Necrobiotic Xanthogranulomatous Sialadenitis with Submandibular Gland Localization without Skin Involvement
Myunghee Kang, Na Rae Kim, Dong Hae Chung, Jae Yeon Seok, Dong Young Kim
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A Rare Case of Angioleiomyoma Arising in the Subglottic Area to Upper Trachea of a Patient with Underlying Asthma: Yeoun Eun Sung, Chin Kook Rhee, Kyo Young Lee; J Pathol Transl Med. 2017;51(1):92-95. Published online August 22, 2016; DOI: https://doi.org/10.4132/jptm.2016.06.21

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Abstract PDF

Angioleiomyoma is a rare disease that is histologically characterized by smooth muscle cells arranged around vascular spaces. Although angioleiomyomas occur rarely in the head and neck region, they can cause various symptoms according the site involved. Here, we present a 44-yearold male patient with a 15-year history of asthma, who presented with recent onset of chest discomfort, globus sensation and throat pain. Medication was not effective in relieving his symptoms, and further evaluation revealed a polypoid ovoid mass, almost obstructing the airway at the border of the larynx and upper trachea on chest computed tomography. The mass was completely resected via a rigid bronchoscopy procedure. Histopathologic examination revealed that the excised mass was angioleiomyoma, which was immunohistochemically positive for smooth muscle actin and negative for desmin.

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Angioleiomyoma of the Epiglottis Mimicking Epiglottic Hemangioma: Clinical Experience and Literature Review
Yang-Yang Bao, Xiao-Jie Shi, Li-Bo Dai, Yu Guo, Hong-Tian Yao, Shui-Hong Zhou
Ear, Nose & Throat Journal.2022; : 014556132211000. CrossRef
Angioleiomyoma of the Larynx: A Case Report and Literature Review
Federica Perardi, Giuseppe Abbate, Leonardo R. Iannuzzelli, Rossella Contini, Manuela De Munari, Francesco G. Sciuto, Monica Leutner, Antonio Scotti
Ear, Nose & Throat Journal.2020; 99(10): 658. CrossRef
Flexible bronchoscopy and cryoextraction for critical airway obstruction caused by an endobronchial angioleiomyoma
Sumit Chatterji, Efrat Ofek, Tiberiu Shulimzon
Respirology Case Reports.2019; 7(4): e00415. CrossRef

Analysis of Mutations in Epidermal Growth Factor Receptor Gene in Korean Patients with Non-small Cell Lung Cancer: Summary of a Nationwide Survey: Sang Hwa Lee, Wan Seop Kim, Yoo Duk Choi, Jeong Wook Seo, Joung Ho Han, Mi Jin Kim, Lucia Kim, Geon Kook Lee, Chang Hun Lee, Mee Hye Oh, Gou Young Kim, Sun Hee Sung, Kyo Young Lee, Sun Hee Chang, Mee Sook Rho, Han Kyeom Kim, Soon Hee Jung, Se Jin Jang, The Cardiopulmonary Pathology Study Group of Korean Society of Pathologists; J Pathol Transl Med. 2015;49(6):481-488. Published online October 13, 2015; DOI: https://doi.org/10.4132/jptm.2015.09.14

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Abstract PDF

Background
Analysis of mutations in the epidermal growth factor receptor gene (EGFR) is important for predicting response to EGFR tyrosine kinase inhibitors. The overall rate of EGFR mutations in Korean patients is variable. To obtain comprehensive data on the status of EGFR mutations in Korean patients with lung cancer, the Cardiopulmonary Pathology Study Group of the Korean Society of Pathologists initiated a nationwide survey. Methods: We obtained 1,753 reports on EGFR mutations in patients with lung cancer from 15 hospitals between January and December 2009. We compared EGFR mutations with patient age, sex, history of smoking, histologic diagnosis, specimen type, procurement site, tumor cell dissection, and laboratory status. Results: The overall EGFR mutation rate was 34.3% in patients with non-small cell lung cancer (NSCLC) and 43.3% in patients with adenocarcinoma. EGFR mutation rate was significantly higher in women, never smokers, patients with adenocarcinoma, and patients who had undergone excisional biopsy. EGFR mutation rates did not differ with respect to patient age or procurement site among patients with NSCLC. Conclusions: EGFR mutation rates and statuses were similar to those in published data from other East Asian countries.

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Jili Yang, Haiyan Lu, Niancai Jing, Bo Wang, Huanyu Guo, Shoukun Sun, Yue Zhang, Chan-Yen Kuo
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Sunhee Chang, Hyo Sup Shim, Tae Jung Kim, Yoon-La Choi, Wan Seop Kim, Dong Hoon Shin, Lucia Kim, Heae Surng Park, Geon Kook Lee, Chang Hun Lee
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Osimertinib in Patients with T790M-Positive Advanced Non-small Cell Lung Cancer: Korean Subgroup Analysis from Phase II Studies
Myung-Ju Ahn, Ji-Youn Han, Dong-Wan Kim, Byoung Chul Cho, Jin-Hyoung Kang, Sang-We Kim, James Chih-Hsin Yang, Tetsuya Mitsudomi, Jong Seok Lee
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Yongchun Zhou, Yuhui Ma, Hutao Shi, Yaxi Du, Yunchao Huang
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No Detection of Simian Virus 40 in Malignant Mesothelioma in Korea: Minseob Eom, Jamshid Abdul-Ghafar, Sun-Mi Park, Joung Ho Han, Soon Won Hong, Kun Young Kwon, Eun Suk Ko, Lucia Kim, Wan Seop Kim, Seung Yeon Ha, Kyo Young Lee, Chang Hun Lee, Hye Kyoung Yoon, Yoo Duk Choi, Myoung Ja Chung, Soon-Hee Jung; Korean J Pathol. 2013;47(2):124-129. Published online April 24, 2013; DOI: https://doi.org/10.4132/KoreanJPathol.2013.47.2.124

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Abstract PDF

Background

Simian virus 40 (SV40), a polyomavirus, was discovered as a contaminant of a human polio vaccine in the 1960s. It is known that malignant mesothelioma (MM) is associated with SV40, and that the virus works as a cofactor to the carcinogenetic effects of asbestos. However, the reports about the correlation between SV40 and MM have not been consistent. The purpose of this study is to identify SV40 in MM tissue in Korea through detection of SV40 protein and DNA.

Methods

We analyzed 62 cases of available paraffin-blocks enrolled through the Korean Malignant Mesothelioma Surveillance System and performed immunohistochemistry for SV40 protein and real-time polymerase chain reaction (PCR) for SV40 DNA.

Results

Of 62 total cases, 40 had disease involving the pleura (64.5%), and 29 (46.8%) were found to be of the epithelioid subtype. Immunostaining demonstrated that all examined tissues were negative for SV40 protein. Sufficient DNA was extracted for real-time PCR analysis from 36 cases. Quantitative PCR of these samples showed no increase in SV40 transcript compared to the negative controls.

Conclusions

SV40 is not associated with the development of MM in Korea.

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WITHDRAWN:A Clinicopathologic Study of 220 Cases of Pulmonary Sclerosing Pneumocytoma in Korea: A Nationwide Survey: Myunghee Kang, Seung Yeon Ha, Joung Ho Han, Mee Sook Roh, Se Jin Jang, Hee Jin Lee, Heae Surng Park, Geon Kook Lee, Kyo Young Lee, Jin-Haeng Chung, Yoo Duk Choi, Chang Hun Lee, Lucia Kim, Myoung Ja Chung, Soon Hee Jung, Gou Young Kim, Wan-Seop Kim; Received April 4, 2018 Accepted July 9, 2018 Published online July 16, 2018; DOI: https://doi.org/10.4132/jptm.2018.07.10 [Accepted]

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