Journal of Pathology and Translational Medicine

Gheeyoung Choe

9 Articles

Loss of PTEN Expression is an Independent Poor Prognostic Factor in Non-small Cell Lung Cancer.: Seol Bong Yoo, Xianhua Xu, Hyun Ju Lee, Sanghoon Jheon, Choon Taek Lee, Gheeyoung Choe, Jin Haeng Chung; Korean J Pathol. 2011;45(4):329-335.; DOI: https://doi.org/10.4132/KoreanJPathol.2011.45.4.329

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BACKGROUND
Alterations in the phosphatase and tensin homolog (PTEN) are correlated with tumor progression. Downregulation of PTEN is related to drug resistance of epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors in non-small cell lung cancer (NSCLC). The aim of this study was to evaluate the prognostic significance of PTEN in patients with NSCLC and its correlation with EGFR.
METHODS
Two hundred eighty eight surgically resected NSCLC samples, including 168 adenocarcinomas (ADCs), 99 squamous cell carcinomas (SCCs) and 21 other NSCLCs were analyzed for the PTEN. The results were correlated with other clinicopathological variables including EGFR amplification and mutation.
RESULTS
Loss of PTEN was detected in 42.4% of NSCLCs, specifically 28.6% of ADCs, 66.7% of SCCs, and 38.1% of others. Loss of PTEN was significantly associated with SCC, smoking, male gender, and higher stage. In a multivariate analysis, loss of PTEN was significantly associated with short progression-free survival (p=0.037). No association between PTEN and EGFR was observed.
CONCLUSIONS
These results suggest that loss of PTEN results in shorter progression-free survival in patients with NSCLC, and loss of PTEN is more associated with SCC, smoking, male gender, and higher T stage by the 7th tumor, node and metastasis staging system but not EGFR status.

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Molecular mechanisms underlying the regulation of tumour suppressor genes in lung cancer
Jia Yee Lee, Richie R. Bhandare, Sai H.S. Boddu, Afzal B. Shaik, Lakshmana Prabu Saktivel, Gaurav Gupta, Poonam Negi, Muna Barakat, Sachin Kumar Singh, Kamal Dua, Dinesh Kumar Chellappan
Biomedicine & Pharmacotherapy.2024; 173: 116275. CrossRef
Alterations in the PI3K Pathway Drive Resistance to MET Inhibitors in NSCLC Harboring MET Exon 14 Skipping Mutations
Philippe Jamme, Marie Fernandes, Marie-Christine Copin, Clotilde Descarpentries, Fabienne Escande, Angela Morabito, Valérie Grégoire, Matthieu Jamme, Simon Baldacci, David Tulasne, Zoulika Kherrouche, Alexis B. Cortot
Journal of Thoracic Oncology.2020; 15(5): 741. CrossRef
PTEN Tumor-Suppressor: The Dam of Stemness in Cancer
Francesca Luongo, Francesca Colonna, Federica Calapà, Sara Vitale, Micol E. Fiori, Ruggero De Maria
Cancers.2019; 11(8): 1076. CrossRef
PTEN in Lung Cancer: Dealing with the Problem, Building on New Knowledge and Turning the Game Around
Anastasios Gkountakos, Giulia Sartori, Italia Falcone, Geny Piro, Ludovica Ciuffreda, Carmine Carbone, Giampaolo Tortora, Aldo Scarpa, Emilio Bria, Michele Milella, Rafael Rosell, Vincenzo Corbo, Sara Pilotto
Cancers.2019; 11(8): 1141. CrossRef
PTEN expression is a prognostic marker for patients with non-small cell lung cancer: a systematic review and meta-analysis of the literature
Jian Xiao, Cheng-Ping Hu, Bi-Xiu He, Xi Chen, Xiao-Xiao Lu, Ming-Xuan Xie, Wei Li, Shu-Ya He, Shao-Jin You, Qiong Chen
Oncotarget.2016; 7(36): 57832. CrossRef
Alteration of the E-cadherin/β-Catenin Complex Predicts Poor Response to Epidermal Growth Factor Receptor-Tyrosine Kinase Inhibitor (EGFR-TKI) Treatment
Seol Bong Yoo, Yu Jung Kim, Hyojin Kim, Yan Jin, Ping-Li Sun, Sanghoon Jheon, Jong Seok Lee, Jin-Haeng Chung
Annals of Surgical Oncology.2013; 20(S3): 545. CrossRef
High concordance of EGFR mutation status between histologic and corresponding cytologic specimens of lung adenocarcinomas
Ping‐Li Sun, Yan Jin, Hyojin Kim, Choon‐Taek Lee, Sanghoon Jheon, Jin‐Haeng Chung
Cancer Cytopathology.2013; 121(6): 311. CrossRef
Impact of HER2 and PTEN Simultaneous Deregulation in Non-small Cell Lung Carcinoma: Correlation with Biological Behavior
Ioannis Panagiotou, Stavros N. Georgiannos, Evangelos Tsiambas, Andreas Karameris, Marios Konstantinou, Andreas C. Lazaris, Nikolaos Kavantzas, George Vilaras, Efstratios Patsouris
Asian Pacific Journal of Cancer Prevention.2012; 13(12): 6311. CrossRef
Expression of the Mammalian Target of Rapamycin Pathway Markers in Lung Adenocarcinoma and Squamous Cell Carcinoma
Hyun-Soo Kim, Gou Young Kim, Sung-Jig Lim, Youn Wha Kim
Pathobiology.2012; 79(2): 84. CrossRef

Immunohistochemical and Molecular Characteristics of Follicular Patterned Thyroid Nodules with Incomplete Nuclear Features of Papillary Thyroid Carcinoma.: Hye Sook Min, Gheeyoung Choe, Nam Yun Cho, Gyeong Hoon Kang, Seong Hoe Park, So Yeon Park; Korean J Pathol. 2009;43(6):495-502.; DOI: https://doi.org/10.4132/KoreanJPathol.2009.43.6.495

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Abstract PDF

BACKGROUND
Follicular patterned thyroid nodules with incomplete nuclear features of papillary thyroid carcinoma (FTN-INPTCs) are difficult to diagnose, and their biological behavior and association with follicular variants of PTC (FVPTCs) have not yet been established. The aim of this study is to determine immunohistochemical and molecular characteristics of FTN-INPTCs. METHODS: We investigated immunohistochemical features (galectin-3, HBME-1, CK19, fibronectin-1, CITED1), BRAF V600E mutation and RASSF1A promoter methylation status in 30 FTN-INPTC cases, along with 26 FVPTCs, 21 follicular adenomas (FAs) and 14 nodular hyperplasias (NHs). RESULTS: Expression of galectin-3, HBME-1, CK19 and CITED1 was significantly higher in FTN-INPTCs than in FAs or NHs, but expression of galectin-3, CK19 and fibronectin-1 was lower in FTN-INPTCs than in FVPTCs. The BRAF V600E mutation was not detected in the benign nodules or FTN-INPTCs, whereas 57% of FVPTCs had the mutation. RASSF1A promoter methylation was higher in FTN-INPTCs than in benign nodules but there was no difference between FTN-INPTCs and FVPTCs. CONCLUSIONS: Our results represent the borderline immunohistochemical and molecular characteristics of FTN-INPTC. We conclude that FTN-INPTC is an intermediate lesion between a benign nodule and a FVPTC, and that it is pathogenetically related to FVPTC.

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A Case of Multifocal Papillary Thyroid Carcinoma Consisting of One Encapsulated Follicular Variant withBRAFK601E Mutation and Three Conventional Types withBRAFV600E Mutation
Wook Youn Kim, Young Sin Ko, Tae Sook Hwang, Hye Seung Han, So Dug Lim, Wan Seop Kim, Seo Young Oh
Korean Journal of Pathology.2013; 47(3): 293. CrossRef
The Frequency ofBRAFMutation in Very Small Papillary Thyroid Carcinomas
Taeeun Kim, Ji-Hyun Roh, Hee-Jung Park, Jee Eun Kwon, So-Young Kang, Yoon-La Choi, Young Lyun Oh
The Korean Journal of Pathology.2010; 44(3): 308. CrossRef

Malignant Mesothelioma in Body Fluids: with Special Reference to Differential Diagnosis from Metastatic Adenocarcinoma.: Jin Ho Paik, Jin Haeng Chung, Baek Hui Kim, Gheeyoung Choe; Korean J Pathol. 2009;43(5):458-466.; DOI: https://doi.org/10.4132/KoreanJPathol.2009.43.5.458

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Abstract PDF: BACKGROUND
Malignant mesothelioma (MM) is a rare malignant neoplasm occurring in pleura, pericardium, and peritoneum. The differential diagnosis between MM and metastatic adenocarcinoma (MA) causes diagnostic, staging, and therapeutic dilemmas. Herein, we investigated characteristic cytologic features of MM.
METHODS
Cytologic specimens of MM (n=10), MA (n=25), and reactive mesothelial hyperplasia (n=10) were retrieved and reviewed from archival materials in the Department of Pathology, Seoul National University Bundang Hospital from May 2003 to July 2008.
RESULTS
MM showed tumor cell clusters and singly scattered malignant tumor cells forming single cell populations with sparse reactive benign mesothelial cells. In contrast, MA showed distinct two cell populations of tumor cell clusters and scattered reactive mesothelial cells. Furthermore, MM frequently exhibited a characteristic long chain-like arrangement (hand-in-hand appearance) and intercellular windows, which were rarely evident in MA. Variable nuclear size, relatively consistent nuclear-cytoplasmic ratio, bior multi-nucleation, and lacy cytoplasmic borders were also frequently observed in MM.
CONCLUSIONS
Differential diagnosis of MM from MA in body fluids is possible based on meticulous examination of certain cytologic parameters, which could have significant implications in staging and treatment.

The Prognostic Significance of Neuroendocrine Differentiation for Treating Prostatic Carcinoma in 699 Cases of Radical Prostatectomy.: Tae Hoon Kang, Eun Shin, Baek Hee Kim, Gheeyoung Choe; Korean J Pathol. 2008;42(6):381-388.

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Abstract PDF: BACKGROUND
Neuroendocrine differentiation of prostatic carcinoma is known to be associated with a poor prognosis, tumor progression and androgen-independency, and there is currently no successful therapy for this type of tumor. The purpose of this study is to evaluate the prognostic implications of neuroendocrine differentiation in prostatic carcinoma in Korean men. METHODS: Six hundreds and ninety nine consecutive cases of radical prostatectomy specimens were systematically processed for topographic mapping. Neuroendocrine differentiation was detected by immunohistochemistry by using antibody to chromogranin. We analyzed the relationship between neuroendocrine differentiation and the clinicopathological prognostic factors, as well as biochemical failure. The neuroendocrine differentiation was evaluated according to the presence of chromogranin-positive cells, the pattern of neuroendocrine cells and the number of neuroendocrine cells, respectively.
RESULTS
Neuroendocrine differentiation was detected in 150 out of 699 cases (21.5%). The presence of neuroendocrine differentiation as well as the pattern of neuroendocrine cells was correlated with biochemical failure and the other clinicopathological prognostic factors such as the Gleason score, the pathologic stage, the tumor volume, angiolymphatic invasion, perineural invasion, and the Ki-67 proliferative index (p<0.05). CONCLUSIONS: We suggest that neuroendocrine differentiation of prostatic carcinoma is a prognostic factor even in radical prostatectomy specimens for localized prostate cancer. Evaluation of the presence of neuroendocrine differentiation as well as the pattern of neuroendocrine cells is recommended in radical prostatectomy specimens.

Pathological Analysis of 1,000 Cases of Transrectal Ultrasoundguided Systematic Prostate Biopsy: Establishment of New Sample Processing Method and Diagnostic Utility of Immunohistochemistry.: Chang Lim Hyun, Hee Eun Lee, Haeryung Kim, Hye Seung Lee, So Yeon Park, Jin Haeng Chung, Gheeyoung Choe; Korean J Pathol. 2006;40(6):406-419.

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Abstract PDF: BACKGROUND
We developed a new processing method for extended prostate needle biopsy, and evaluated diagnostic utility of routine immunohistochemistry in 1,000 consecutive unselected cases of transrectal ultrasound-guided systematic prostate biopsy.
METHODS
Four to five biopsy cores were embedded in one paraffin block. All the biopsy cores were immunohistochemically stained with basal cell markers.
RESULTS
The new sample processing method was technically perfect for making a diagnosis from extended prostate needle biopsy. Among 1,000 cases, there were 323 cases (32.3%) of adenocarcinoma, 5 cases of other malignant tumors, 9 cases of high-grade prostatic intraepithelial neoplasia without a carcinoma, and only 8 cases of atypical small acinar proliferation. Among the 323 cases of adenocarcinoma, there were 38 cases (11.8%) of microcarcinomas <0.1 cm and 101 cases (31.3%) of small adenocarcinomas <0.3 cm in length. In the needle biopsy specimens, 59 cases (18.3%) were classified as clinically insignificant carcinomas. Among them, 37 cases underwent radical prostatectomy, which turned out to be clinically significant carcinomas in 24 cases (64.9%).
CONCLUSIONS
Routinely performed immunohistochemistry combined with the new sample processing method is very effective for detecting microscopic carcinoma foci as well as differentiating carcinoma from benign conditions mimicking cancer.

Immunohistochemical Characteristics of Kaposi Sarcoma and its Mimicries.: Kyoung Bun Lee, Hye Seung Lee, Hee Eun Lee, So Yeon Park, Jin Haeng Chung, Gheeyoung Choe, Woo Ho Kim, Kye Yong Song; Korean J Pathol. 2006;40(5):361-367.

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Abstract PDF: BACKGROUND
The differential diagnosis of Kaposi sarcoma includes many disease that range from benign disease to malignant tumors. However, little information is available about the immunohistochemical characteristics of Kaposi sarcoma.
METHODS
The expressions of 13 various proteins (HHV-8 LNA-1, Ki-67, bcl-2, p53, CD31, CD34, factor VIII, D2-40, vimentin, SMA, S-100, EMA, and c-kit) were evaluated immunohistochemically in 49 vascular tumors including 16 Kaposi sarcomas, 8 angiosarcomas, 2 hemangioendotheliomas, and 23 benign vascular tumors with using the tissue array method.
RESULTS
All 16 cases of Kaposi sarcoma showed nuclear staining for HHV-8 LNA-1, whereas all the cases of angiosarcoma and benign vascular lesions were negative for HHV-8 LNA-1 (p<0.001). All Kaposi sarcoma were positive for D2-40, which is a marker of lymphatic differentiation, but 25% of the benign vascular lesions and 30.4% of the angiosarcoma were positive for D2-40 (p<0.001). The mean proliferation index as assessed by Ki-67 immunostaining revealed no difference between the benign and malignant vascular lesions (p>0.05). No Kaposi sarcoma showed a bcl-2 expression, but 62.5% of the angiosarcomas and 21.7% of the benign vascular tumors had bcl-2 expressions (p=0.005).
CONCLUSIONS
Immunohistochemical detection of HHV-8 LNA-1 and D2-40 are useful tools to differentiate Kaposi sarcoma from other vascular tumors.

Pathologic Analysis of 2159 Cases of Appendix.: Chan Sik Park, Mee Soo Chang, In Ae Park, Yong Il Kim, Gheeyoung Choe; Korean J Pathol. 2000;34(1):39-49.

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Abstract PDF: We reviewed 2159 consecutive cases of surgically resected appendices. The appendectomy specimen consisted of 91 cases of acute focal appendicitis (5.4%), 926 cases of acute suppurative appendicitis (55.1%), 228 cases of acute gangrenous appendicitis (13.6%), 63 cases of periappendicitis (3.8%), 13 cases of pure fibrous obliteration of the lumen (FOL; 0.8%), 18 cases of other diseases (7 mucoceles, 2 mucinous cystic neoplasms, 4 carcinoids, 2 metastatic carcinomas, 2 tuberculous appendicitides, and 1 eosinophilic appendicitis; 1%), and 342 cases with no diagnostic abnormality (20.3%). Patients having acute appendicitis ranged from 3 to 84 years of age, and patients in their 10's and 20's occupied over half of 2159 cases. Diagnostic accuracy of the acute appendicitis was 79.7%. Incidence of the acute appendicitis was suspected to be 7.2/100,000/year. Twenty eight cases of acute appendicitis were associated with diverticula. In the former acute primary diverticulitis led to acute appendicitis in 14 of 28 cases. Among 478 incidental appendectomy cases, there were 3 acute focal appendicitides, 1 acute suppurative appendicitis, 1 eosinophilic appendicitis, 32 periappendicitides, 1 mucocele, 40 pure FOLs, 1 deciduosis, 1 endometriosis, and 1 diverticulosis without inflammation. There were 69 cases of FOL (32 complete forms and 37 incomplete forms), among which 13 cases were associated with acute appendicitis. FOL was more frequent in female patients as well as patients over 40 years of age. Incomplete FOL was considered to progress to complete form with age. The incidence of appendiceal diverticula was higher, whereas the incidences of carcinoid tumor and FOL were lower compared with that in the western report. In 14 of 28 cases the appendiceal diverticulum was the site in which acute appendicitis began.

Pathological Analysis of Post-Transplantation Endomyocardial Biopsies.: Jaegul Chung, Soonae Oak, Gheeyoung Choe, Gyungyub Gong, Jooryung Huh, Eunsil Yu, Inchul Lee, Meong Gun Song, Kwang Hyun Sohn, Jae Joong Kim, Jong Goo Lee; Korean J Pathol. 1995;29(4):431-441.

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Abstract PDF: Heart transplantation was first performed in 1967. It is now regarded as a well-established treatment modality for end-stage cardiac diseases. Once the transplantation is performed, endomyocardial biopsy(EMB) is the examination of choice in monitoring the transplanted heart. We analyzed the pathological findings of follow-up EMB of 6 heart transplant patients. All patients have been suffered from severe heart failure. Four patients were adult male and two were adult females. All the hearts, except for one, displayed characteristic features of dilated cardiomyopathy. The remaining heart was diagnosed as having giant cell myocarditis. Post-transplantion EMBs were performed according to the protocol and standard cardiac biopsy grading of ISHT (1990). The standards were applied for grading of cellular rejection. In five patients, there were one or two episodes of biopsy proven acute rejection, grade II or IIIA without any clinical symptoms of rejection. Immediate "pulse therapy" was performed and follow-up biopsies were done. All episodes of rejection were cleared in subsequent biopsies. All patients are doing well without evidence of cardiac problem. The postoperative monitoring of acute rejection is critical since clinical signs of rejection are usually absent. At present, EMB is regarded as the most reliable method for diagnosis and grading of acute rejection and is an efficient guide to the monitoring of the cardiac recipients. Our experience of post-transplantation EMB corresponds with previously published reports.

Cytologic Features of Primary Tumors in Central Nervous System.: Soonae Oak, Jaegul Chung, Gyungyub Gong, Gheeyoung Choe, Eunsil Yu, Inchul Lee; Korean J Cytopathol. 1994;5(2):90-98.

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Abstract PDF: There has been a marked increase in the utility of aspiration cytology for pathologic diagnosis. It may be applied to any kinds of organs and substitutes surgical biopsy. Because of the high risk of complication and difficulties in localization, aspiration cytology in the central nervous system(CNS) has been used with less frequency compared to other sites. However, with the advent of sophisticated imaging instruments, aspiration cytology of lesions in the CNS is being used increasingly. Cytologic features of the CNS neoplasms were quite similar to those of histology except one spindle cell tumor. Reviewing various CNS neoplasms, it appears that cytology may be a useful diagnostic method.

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