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Original Articles
Cytological Features That Differentiate Follicular Neoplasm from Mimicking Lesions
Kanghee Han, Hwa-Jeong Ha, Joon Seog Kong, Jung-Soon Kim, Jae Kyung Myung, Jae Soo Koh, Sunhoo Park, Myung-Soon Shin, Woo-Tack Song, Hye Sil Seol, Seung-Sook Lee
J Pathol Transl Med. 2018;52(2):110-120.   Published online January 29, 2018
DOI: https://doi.org/10.4132/jptm.2018.01.17
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AbstractAbstract PDF
Background
It is difficult to correctly diagnose follicular neoplasms (FNs) on fine-needle aspiration cytology (FNAC) because it shares many cytological features with other mimicking lesions. The aim of this study was to identify the cytological features that differentiate FNs from mimicking lesions.
Methods
We included the cytological slides from 116 cases of thyroid FN diagnosed on FNAC, and included their subsequent histological diagnoses. We evaluated the cytological architectural pattern and nuclear features of the lesions according to their histological groups.
Results
The final histological diagnoses of the 116 cases varied, and included 51 FNs (44%), 47 papillary thyroid carcinomas (40%) including follicular variant, and seventeen cellular nodular hyperplasias (15%). Regardless of the final histological diagnosis, microfollicular pattern was observed in most cases. On the other hand, trabecular pattern was identified in 34% of FNs, but not in any other lesions. Additionally, elongated nuclei and ground glass chromatin were found in only some papillary thyroid carcinomas.
Conclusions
This study shows that the trabecular pattern is a representative cytological feature of FNs that can be used to distinguish FNs from mimicking lesions. In addition, nuclear shape and chromatin pattern can be used to further confirm the diagnosis of FNs from mimicking lesions through FNAC.

Citations

Citations to this article as recorded by  
  • Diagnostic implication of thyroid spherules for cytological diagnosis of thyroid nodules
    Heeseung Sohn, Kennichi Kakudo, Chan Kwon Jung
    Cytopathology.2024; 35(3): 383.     CrossRef
  • Using Deep Convolutional Neural Networks for Enhanced Ultrasonographic Image Diagnosis of Differentiated Thyroid Cancer
    Wai-Kin Chan, Jui-Hung Sun, Miaw-Jene Liou, Yan-Rong Li, Wei-Yu Chou, Feng-Hsuan Liu, Szu-Tah Chen, Syu-Jyun Peng
    Biomedicines.2021; 9(12): 1771.     CrossRef
  • The Role of Fine Needle Aspiration Biopsy with Bethesda System in the Evaluation of Thyroid Nodules
    Gizem AKKAŞ AKGÜN, Figen ASLAN
    Anadolu Kliniği Tıp Bilimleri Dergisi.2021; 26(1): 23.     CrossRef
  • Comprehensive DNA Methylation Profiling Identifies Novel Diagnostic Biomarkers for Thyroid Cancer
    Jong-Lyul Park, Sora Jeon, Eun-Hye Seo, Dong Hyuck Bae, Young Mun Jeong, Yourha Kim, Ja Seong Bae, Seon-Kyu Kim, Chan Kwon Jung, Yong Sung Kim
    Thyroid.2020; 30(2): 192.     CrossRef
  • Preoperative diagnostic categories of fine needle aspiration cytology for histologically proven thyroid follicular adenoma and carcinoma, and Hurthle cell adenoma and carcinoma: Analysis of cause of under- or misdiagnoses
    Hee Young Na, Jae Hoon Moon, June Young Choi, Hyeong Won Yu, Woo-Jin Jeong, Yeo Koon Kim, Ji-Young Choe, So Yeon Park, Paula Soares
    PLOS ONE.2020; 15(11): e0241597.     CrossRef
Importance of Individual Ghost Cells in Fine-Needle Aspiration Cytology Diagnosis of Pilomatricoma
Kanghee Han, Hwa-Jeong Ha, Joon Seog Kong, Jae Kyung Myung, Sunhoo Park, Jung-Soon Kim, Myung-Soon Shin, Hye Sil Seol, Jae Soo Koh, Seung-Sook Lee
J Pathol Transl Med. 2018;52(1):45-50.   Published online January 15, 2018
DOI: https://doi.org/10.4132/jptm.2017.10.18
  • 7,398 View
  • 142 Download
  • 2 Web of Science
  • 1 Crossref
AbstractAbstract PDF
Background
Although histological diagnosis of pilomatricoma is not difficult because of its unique histological features, cytological diagnosis through fine-needle aspiration cytology (FNAC) is often problematic due to misdiagnoses as malignancy.
Methods
We reviewed the cytological features of 14 cases of histologically-proven pilomatricoma from Korea Cancer Center Hospital, with a discussion on the diagnostic pitfalls of FNAC.
Results
Among 14 cases of pilomatricoma, 10 (71.4%) were correctly diagnosed through FNAC, and two (14.3%) were misdiagnosed as carcinoma. Cytologically, all cases had easily recognizable clusters of basaloid cells and foreign body-type multinucleated cells. Although ghost cells were also found in all cases, some were inconspicuous and hardly recognizable due to their small numbers.
Conclusions
An accurate diagnosis of pilomatricoma in FNAC is feasible with consideration of clinical information and close examination of ghost cells.

Citations

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  • A case of pilomatricoma with suspected malignancy diagnosed by intraoperative rapid cytological diagnosis
    Miho YOSHIDA-TANAKA, Kazuya KURAOKA, Naoko YASUMURA, Arisa KAN, Yumi SAIKI, Akihiro KAGAWA, Akihisa SAITO, Kiyomi TANIYAMA
    The Journal of the Japanese Society of Clinical Cytology.2019; 58(3): 133.     CrossRef
The Significance of TROP2 Expression in Predicting BRAF Mutations in Papillary Thyroid Carcinoma
Joon Seog Kong, Hyeon Jin Kim, Min-Jung Kim, Areumnuri Kim, Dalnim Lee, Kanghee Han, Sunhoo Park, Jae Soo Koh, Jae Kyung Myung
J Pathol Transl Med. 2018;52(1):14-20.   Published online December 11, 2017
DOI: https://doi.org/10.4132/jptm.2017.10.17
  • 7,659 View
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  • 9 Web of Science
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AbstractAbstract PDF
Background
Trophoblast antigen 2 (TROP2) is a human trophoblast cell-surface glycoprotein that is overexpressed in several types of epithelial cancers, and is suggested to be associated with an unfavorable prognosis. BRAF mutations are the most common genetic alteration in papillary thyroid carcinoma (PTC). We evaluated the correlation between TROP2 expression and BRAF mutation in PTC.
Methods
First, we carried out pyrosequencing for BRAF mutations and immunohistochemistry for TROP2 expression with a tissue microarray consisting of 52 PTC cases. Membranous staining in at least 5% of tumor cells was designated as positive staining and we analyzed the relationship between TROP2 expression and diverse clinicopathological factors, including BRAF mutation. Second, we tested TROP2 mRNA expression in three thyroid cancer cell lines with BRAF mutations (BCPAP, SNU790, and 8505C) and a normal thyroid cell line. Additionally, we checked TROP2 protein levels in a normal thyroid cell line after introduction of the BRAF V600E mutation.
Results
In this study, 21 of 26 cases with BRAF mutation showed TROP2 immunoreactivity, whereas all 26 cases without BRAF mutation showed no immunoreactivity for TROP2 with a statistically significant difference (p<.001). Upregulation of TROP2 mRNA was observed in all three thyroid cancer cell lines, but not in the normal thyroid cell line. Interestingly, however, the TROP2 expression was increased in the normal thyroid cell line after introduction of the BRAF V600E mutation.
Conclusions
Based on these results, we concluded that TROP2 expression is significantly associated with BRAF mutation and that TROP2 immunohistochemistry could be used for predicting BRAF mutations or diagnosing papillary thyroid carcinoma.

Citations

Citations to this article as recorded by  
  • Diagnostic and prognostic utility of TROP-2, SLP-2, and CXCL12 expression in papillary thyroid carcinoma
    Amany Selim Attia, Samia Hussein, Hend Sameh, Amr Khalil, Ahmad Barakat Waley, Ihab Matar, Reham Sameh
    Cancer Biomarkers.2024; 39(3): 211.     CrossRef
  • TROP2 is a Good Indicator for Infiltrative Nature of Carcinoma Rather than Diagnosing Malignancy in Thyroid
    E. Kılınc, P. Gunes, A. Doganer
    Indian Journal of Otolaryngology and Head & Neck Surgery.2022; 74(S2): 2560.     CrossRef
  • Advances in Trop2-targeted therapy: Novel agents and opportunities beyond breast cancer
    Xinlin Liu, Junwen Deng, Yang Yuan, Wujun Chen, Wenshe Sun, Yanhong Wang, Haiming Huang, Bing Liang, Tao Ming, Jialian Wen, Binghuan Huang, Dongming Xing
    Pharmacology & Therapeutics.2022; 239: 108296.     CrossRef
  • Knockdown of Trop2 inhibits proliferation and migration and induces apoptosis of endometrial cancer cells via AKT/β‐catenin pathway
    Xiaotong Sun, Guangyang Xing, Cui Zhang, Kun Lu, Yuqiong Wang, Xiyan He
    Cell Biochemistry and Function.2020; 38(2): 141.     CrossRef
  • Can TROP2 be used as a prognostic marker in endometrioid endometrial carcinoma?
    SerkanY Çelik, Özgürİlhan Çelik
    Indian Journal of Pathology and Microbiology.2020; 63(3): 418.     CrossRef
  • Diagnostic Value of TROP-2 and CK19 Expression in Papillary Thyroid Carcinoma in Both Surgical and Cytological Specimens
    Asmaa Gaber Abdou, Mohammed Shabaan, Rania Abdallha, Nehal Nabil
    Clinical Pathology.2019; 12: 2632010X1986304.     CrossRef
  • Evaluation of Diagnostic Utility of Immunohistochemistry Markers of TROP-2 and HBME-1 in the Diagnosis of Thyroid Carcinoma
    Nooshin Zargari, Maral Mokhtari
    European Thyroid Journal.2019; 8(1): 1.     CrossRef
  • The diagnostic value of TROP-2, SLP-2 and CD56 expression in papillary thyroid carcinoma
    Xueyang Yang, Yifang Hu, He Shi, Chengzhou Zhang, Zhixiao Wang, Xiaoyun Liu, Huanhuan Chen, Lijuan Zhang, Dai Cui
    European Archives of Oto-Rhino-Laryngology.2018; 275(8): 2127.     CrossRef
  • TROP2 promotes cell proliferation and migration in osteosarcoma through PI3K/AKT signaling
    Qing‑Zhi Gu, Abulimiti Nijiati, Xing Gao, Kai‑Liang Tao, Cheng‑Duo Li, Xue‑Peng Fan, Zheng Tian
    Molecular Medicine Reports.2018;[Epub]     CrossRef
Brief Case Report
Biliary Granular Cell Tumor
Changwon Jung, Ilyeong Heo, Sang Bum Kim, Sunhoo Park, Soo Youn Cho
J Pathol Transl Med. 2015;49(1):89-91.   Published online January 15, 2015
DOI: https://doi.org/10.4132/jptm.2014.10.07
  • 7,777 View
  • 57 Download
  • 5 Web of Science
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Citations

Citations to this article as recorded by  
  • Granular cell tumor of the gallbladder: case report and review of the literature
    Walid E Abdelrahim, Salwa O Mekki, Fatima M A Ali, Sarra Ahmed H Mukhtar, Kamal E Elssidig, Elthir A G Khalil, Omer Alfarog
    Journal of Surgical Case Reports.2019;[Epub]     CrossRef
  • Malignant Granular Cell Tumor of the Bile Duct
    Patrick L. Quinn, Eihab Abdelfatah, Mark A. Galan, Sushil K. Ahlawat, Ravi J. Chokshi
    ACG Case Reports Journal.2019; 6(8): e00193.     CrossRef
  • Multifocal granular cell tumour of the biliary tree
    Felip Vilardell, Marina Pardina, Jorge Juan Olsina, Xavier Matias-Guiu
    BMJ Case Reports.2018; 11(1): e226352.     CrossRef
  • Solitary, multiple, benign, atypical, or malignant: the “Granular Cell Tumor” puzzle
    Isidro Machado, Julia Cruz, Javier Lavernia, Antonio Llombart-Bosch
    Virchows Archiv.2016; 468(5): 527.     CrossRef
Case Study
Primary Myxoid Leiomyoma of the Liver
Hee Seung Choi, Chang Won Jung, Soo Youn Cho, Sang Bum Kim, Sunhoo Park
Korean J Pathol. 2014;48(1):54-57.   Published online February 25, 2014
DOI: https://doi.org/10.4132/KoreanJPathol.2014.48.1.54
  • 7,601 View
  • 48 Download
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AbstractAbstract PDF

Herein, we report a case of primary myxoid leiomyoma of the liver. A 60-year-old woman complained of upper abdominal fullness. Computed tomography showed a solid tumor (8 cm) in the liver. The patient underwent right hepatectomy and histological findings from the resected specimen revealed scattered bland spindle cells in a background of exuberant myxoid material. The tumor cells were immunoreactive for smooth muscle actin and desmin. No other lesions were found elsewhere in the body. Thus, the tumor was diagnosed as a primary myxoid leiomyoma of the liver.

Citations

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  • Hepatic Myxoid Leiomyoma: A Very Rare Tumor
    João Fraga, Rui Caetano Oliveira, Luigi Terracciano, Mário Rui Silva, Maria Augusta Cipriano
    GE - Portuguese Journal of Gastroenterology.2020; 27(5): 352.     CrossRef
  • A Firm Hepatic Mass Cannot Be Penetrated by US-Guided Needle Biopsy
    Suk Hyun Jang, Sun Moon Kim, Jang Sihn Sohn, Ki Hyun Ryu, Hyung Bin Yuk
    Clinical Ultrasound.2016; 1(2): 126.     CrossRef
Original Articles
Fine Needle Aspiration Cytology of Parathyroid Lesions
Ilyeong Heo, Sunhoo Park, Chang Won Jung, Jae Soo Koh, Seung-Sook Lee, Hyesil Seol, Hee Seung Choi, Soo Youn Cho
Korean J Pathol. 2013;47(5):466-471.   Published online October 25, 2013
DOI: https://doi.org/10.4132/KoreanJPathol.2013.47.5.466
  • 8,688 View
  • 77 Download
  • 32 Crossref
AbstractAbstract PDF
Background

There has been an increase in the use of fine needle aspiration cytology (FNAC) for the diagnosis of parathyroid lesions (PLs). Differentiation between a thyroid lesion and a PL is not easy because of their similar features. We reviewed parathyroid aspirates in our institution and aimed to uncover trends in diagnostic criteria.

Methods

We selected 25 parathyroid aspirates (from 6 men and 19 women) confirmed surgically or immunohistochemically from 2006 to 2011.

Results

Major architectural findings of PLs include scattered naked nuclei, loose clusters, a papillary pattern with a fibrovascular core, tight clusters, and a follicular pattern. These architectures were commonly admixed with one another. Cytological features included anisokaryosis, stippled chromatin, a well-defined cell border, and oxyphilic cytoplasm. Eighteen of the 25 patients were diagnosed with PL using FNAC. Seven patients had been misdiagnosed with atypical cells (n=2), benign follicular cells (n=2), adenomatous goiter (n=2) and metastatic carcinoma (n=1) in FNAC. Using clinicoradiologic data, the sensitivity of the cytological diagnosis was 86.7%. The cytological sensitivity decreased to 50% without this information.

Conclusions

FNAC of PL is easily confused with thyroid lesions. A combination of cytological parameters and clinical data will be required to improve the diagnostic sensitivity of PLs.

Citations

Citations to this article as recorded by  
  • Sonographic Features of Atypical and Initially Missed Parathyroid Adenomas: Lessons Learned From a Single-Center Cohort
    Seyfettin Ilgan, Berna İmge Aydoğan, Özdeş Emer, Cüneyd Anıl, Alptekin Gürsoy, Mustafa Cesur, Banu Bilezikçi
    The Journal of Clinical Endocrinology & Metabolism.2024; 109(2): 439.     CrossRef
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    Elwira Bakuła‐Zalewska, Joanna Długosińska, Agata Stanek‐Widera, Piotr Góralski, Jacek Gałczyński, Agnieszka Żyłka, Monika Durzyńska, Marek Dedecjus
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    Head & Neck.2023; 45(3): 706.     CrossRef
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    Journal of Pathology and Translational Medicine.2023; 57(4): 196.     CrossRef
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    Yoshitaka Kawai, Yo Kishimoto, Hisanobu Tamaki, Takashi Fujiwara, Ryo Asato, Koji Ushiro, Shogo Shinohara, Shinpei Kada, Shinji Takebayashi, Tsuyoshi Kojima, Shuya Otsuki, Masakazu Miyazaki, Yohei Kumabe, Koichi Omori
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    Journal of Investigative Surgery.2022; 35(4): 752.     CrossRef
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    Alfredo Campennì, Salvatore Giovinazzo, Salvatore Antonio Pignata, Francesca Di Mauro, Domenico Santoro, Lorenzo Curtò, Francesco Trimarchi, Rosaria Maddalena Ruggeri, Sergio Baldari
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    A. Caleo, M. Vitale, L. Valvano, M. Siano, B. Angrisani, M. Forlenza, A. Massari, A. Puzziello, F. Salzano, P. Zeppa
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    Simon Sung, Anjali Saqi, Elizabeth M. Margolskee, John P. Crapanzano
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    Sung Hak Lee, Gyeong Sin Park, So Lyung Jung, Min-Hee Kim, Ja Seong Bae, Dong Jun Lim, Chan Kwon Jung
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    Charu Agarwal, Manju Kaushal
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  • PARATHYROID CYTOLOGY: A DIAGNOSTIC DILEMMA
    Naval Kishore Bajaj, Shrinivas Somalwar, Akhtar Mohammad, Ezhil Arasi Nagamuthu
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    Teklu Legesse, Paul N. Staats
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  • A nonfunctioning parathyroid carcinoma misdiagnosed as a follicular thyroid nodule
    Filomena Cetani, Gianluca Frustaci, Liborio Torregrossa, Silvia Magno, Fulvio Basolo, Alberto Campomori, Paolo Miccoli, Claudio Marcocci
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Early Colorectal Epithelial Neoplasm in Korea: A Multicenter Survey of Pathologic Diagnosis
Yun Kyung Kang, So-Young Jin, Mee Soo Chang, Jung Yeon Kim, Gyeong Hoon Kang, Hye Seung Lee, Jin Hee Sohn, Ho Sung Park, Kye Won Kwon, Mi Jin Gu, Young Hee Maeng, Jong Eun Joo, Haeng Ji Kang, Hee Kyung Kim, Kee-Taek Jang, Mi Ja Lee, Hee Kyung Chang, Joon Mee Kim, Hye Seung Han, Won Ae Lee, Yoon Jung Choi, Dong Wook Kang, Sunhoo Park, Jae Hyuk Lee, Mee-Yon Cho
Korean J Pathol. 2013;47(3):245-251.   Published online June 25, 2013
DOI: https://doi.org/10.4132/KoreanJPathol.2013.47.3.245
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AbstractAbstract PDF
Background

The incidence of early colorectal epithelial neoplasm (ECEN) is increasing, and its pathologic diagnosis is important for patient care. We investigated the incidence of ECEN and the current status of its pathologic diagnosis.

Methods

We collected datasheets from 25 institutes in Korea for the incidence of colorectal adenoma with high grade dysplasia (HGD) and low grade dysplasia in years 2005, 2007, and 2009; and early colorectal carcinoma in the year 2009. We also surveyed the diagnostic terminology of ECEN currently used by the participating pathologists.

Results

The average percentage of diagnoses of adenoma HGD was 7.0%, 5.0%, and 3.4% in years 2005, 2007, and 2009, respectively. The range of incidence rates of adenoma HGD across the participating institutes has gradually narrowed over the years 2005 to 2009. The incidence rate of early colorectal carcinoma in the year 2009 was 21.2%. The participants did not share a single criterion or terminology for the diagnosis of adenoma HGD. The majority accepted the diagnostic terms that distinguished noninvasive, mucosal confined, and submucosal invasive carcinoma.

Conclusions

Further research requirements suggested are a diagnostic consensus for the histopathologic diagnosis of ECEN; and standardization of diagnostic terminology critical for determining the disease code.

Citations

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  • Diminutive and Small Colorectal Polyps: The Pathologist's Perspective
    Yun Kyung Kang
    Clinical Endoscopy.2014; 47(5): 404.     CrossRef
Fine-Needle Aspiration Cytology of Pleomorphic Carcinomas of the Lung
Hee Seung Choi, Hyesil Seol, Il Yeong Heo, Chang Won Jung, Soo Youn Cho, Sunhoo Park, Jae Soo Koh, Seung-Sook Lee
Korean J Pathol. 2012;46(6):576-582.   Published online December 26, 2012
DOI: https://doi.org/10.4132/KoreanJPathol.2012.46.6.576
  • 6,749 View
  • 38 Download
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AbstractAbstract PDF
Background

Pleomorphic carcinoma (PC) is a rare pulmonary malignancy. Because of its rarity and histological heterogeneity, cytopathologists might suspect PC only rarely on the basis of its cytological specimen. In addition, cytological findings from fine needle aspiration (FNA) specimens have rarely been described. Hence, we investigated the cytological features of FNA in the cases of PC.

Methods

We reviewed 7 FNA specimens of PC. The patients had undergone surgical resection at the Korea Cancer Center Hospital between 2007 and 2011. The cytological features of PC were assessed and compared with the histopathological features of the corresponding surgical specimen. Immunocytochemical analysis with cytokeratin and vimentin was performed on the cell blocks.

Results

The tumor cells were either dispersed or arranged in loose aggregates, and generally lacked any glandular or squamous differentiation. Pleomorphic or spindle shape tumor cells were observed, and mono-, bi-, or multi-nucleated giant cells were frequently observed. The background showed necrosis and contained numerous lymphocytes and neutrophils. Immunocytochemically, the tumor cells were positive for cytokeratin and vimentin.

Conclusions

PC displays characteristic cytological features. It might therefore be possible to make an accurate diagnosis of PC by assessing the degree of nuclear atypia.

Citations

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  • Sarcomatoid carcinoma in cytology: Report of a rare entity presenting in pleural and pericardial fluid preparations
    Atreyee Basu, Andre L. Moreira, Anthony Simms, Tamar C. Brandler
    Diagnostic Cytopathology.2019; 47(8): 813.     CrossRef
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    Kevin Kuan, Samer N. Khader, Siba El Hussein
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  • Combined small cell carcinoma with giant cell carcinoma component of the lung: A case successfully diagnosed by computed tomography‑guided fine‑needle aspiration cytology
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Update on the Proposal for Creating a Guideline for Cancer Registration of the Gastrointestinal Tumors (I-2)
Eun Sun Jung, Yun Kyung Kang, Mee-Yon Cho, Joon Mee Kim, Won Ae Lee, Hee Eun Lee, Sunhoo Park, Jin Hee Sohn, So-Young Jin
Korean J Pathol. 2012;46(5):443-453.   Published online October 25, 2012
DOI: https://doi.org/10.4132/KoreanJPathol.2012.46.5.443
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AbstractAbstract PDF
Background

Cancer registries play a fundamental role in cancer control and multicenter collaborative research. Recently, the need for reassessment of cancer registry criteria has arisen due to the newly released 2010 World Health Organization (WHO) classification. Accordingly, development of new coding guidelines for cancer is necessary to improve the quality of cancer registries, as well as to prevent conflicts that may arise when seeking medical insurance compensation.

Methods

With funding from the Management Center for Health Promotion, 35 members of the Gastrointestinal Pathology Study Group and the Cancer Registration Committee of the Korean Society of Pathologists (KSP) participated in a second workshop for gastrointestinal tumor registration in Korea.

Results

The topics of gastric epithelial tumor, colonic intramucosal carcinoma, neuroendocrine tumor (NET), gastrointestinal stromal tumor (GIST) and appendiceal mucinous tumor were discussed for new coding guidelines. A survey was then conducted among 208 members of the KSP for a consensus of the guidelines proposed in the workshop.

Conclusions

Although a few issues were set aside for further discussion, such as coding for non-gastric GIST and some types of NET, the members agreed upon most of the proposed guidelines. Therefore, we suggest using the newly revised International Classification of Diseases for Oncology, 3rd edition (ICD-O-3) coding guidelines for registering gastrointestinal tumors in Korea.

Citations

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Case Report
Cytologic Findings of Chordoma in Fine Needle Aspiration Cytology.
Han Suk Ryu, Min Suk Kim, Hwa Jung Ha, Jung Soon Kim, Myung Soon Shin, Sunhoo Park, Jin Haeng Chung, Jae Soo Koh, Seung Sook Lee
Korean J Cytopathol. 2004;15(1):45-51.
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AbstractAbstract PDF
It is important to recognize the pathognomonic cytologic findings of chordoma, because of overlapping cytologic features between chordoma, chondrosarcoma, myxofibrillary ependymoma, and metastatic adenocarcinoma. We reviewed the cytomorphologic features of 5 cases of chordoma diagnosed by fine needle aspiration cytology at Korean Cancer Center Hospital from 1987 to 2003. Clinical and radiographic findings of each case were reviewed. Four males and one female (29-54 years) had tumors involving the sacrum. Pain was the presenting symptom in 4 cases. The three cases showed moderate to high cellularity. In all cases, typical physaliferous cells with or without cytoplasmic processes were noted. In two cases, the background was myxoid with single scattered cells. Cell clusters showing cord-like arrangement were occasionally seen. The single or clustered cells showed mild cellular pleomorphism with slightly increased nuclear/cytoplasmic ratio. Mitotic figures were not seen. In our review, the recognition of physaliferous cells is the most important feature to diagnose chordoma and to differentiate it from other lesions mimicking chordoma.
Original Articles
Differential Diagnosis between Small Cell Carcinoma and Adenocarcinoma of Lung in Fine Needle Aspiration Cytology.
Young Hee Choi, Jae Soo Koh, Sunhoo Park, Min Suk Kim, Soo Youn Cho, Jung Soon Kim, Hwa Jung Ha, Seung Sook Lee
Korean J Cytopathol. 2006;17(2):120-125.
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AbstractAbstract PDF
Distinguishing small cell carcinoma from other lung malignancies is of great clinico-therapeutic significance. Small cell carcinoma is an aggressive tumor with a tendency to metastasize early. Survival time if untreated is low but this tumor is highly responsive to chemotherapy. We have occasionally experienced difficulties in differentiation between adenocarcinoma and small cell carcinoma of the lung in fine needle aspiration cytology (FNAC). The aim of this study was to investigate the possibility of distinguishing small cell carcinoma from adenocarcinoma of the lung in FNAC. We evaluated cytomorphological features of FNAC specimens from 62 small cell carcinomas and 57 adenocarcinomas from the lung that were confirmed by biopsy and/or immunohistochemistry on cell block. Cytomorphological details of the two tumors were compared. Nuclear smearing and nearly absent cytoplasm were the most distinct findings in small cell carcinoma compared to adenocarcinoma (p<0.05). Necrotic background, architecture and chromatin pattern, nuclear molding and nucleoli were significantly different (p<0.05). Nuclear size, nuclear membrane nature and nuclear size variation however were not helpful in distinguishing the two tumors. Combining several features described above, small cell carcinoma can be properly differentiated from adenocarcinoma on FNAC. FNAC is proposed as a diagnostic tool of small cell carcinoma of the lung in the case of inaccessibility to biopsy, and so may allow the proper therapeutic strategies to be determined in such cases.
Cytomorphologic Comparison of Hodgkin Lymphoma and Anaplastic Large cell Lymphoma in Fine Needle Aspiration Cytology.
Seung Sook Lee, Jae Soo Koh, Sunhoo Park, Min Suk Kim, Soo Youn Cho, Soo Young Chung, Han Suk Ryu, Jung Soon Kim, Hwa Jung Ha, Baek Youl Ryoo
Korean J Cytopathol. 2006;17(2):126-135.
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AbstractAbstract PDF
To study the differentiating cytomorphological features of Hodgkin lymphoma (HL) and anaplastic large cell lymphoma (ALCL) using fine needle aspiration cytology (FNAC), cytomorphological features of 16 patients with HL (n=8) or ALCL (n=8) were analyzed. In the initial cytological diagnosis prior to biopsy, HLs were properly diagnosed in 4 out of 8 cases (4 HL, 2 atypical, 2 benign), whereas all ALCL were diagnosed as malignancies. However, correct diagnosis of non-Hodgkin lymphoma (NHL) was made in only two ALCL patients (2 NHL, 1 HL, 1 sarcoma, 4 malignancy without specific type). Overall, the percentage of large abnormal cells ranged from 30% to 90% in ALCL except for one case, whereas it was less than 5% in all 8 HL. A spectrum of atypical cells was more characteristic of ALCL. In contrast, HL showed an sharp difference between reactive lymphoid cells and neoplastic ones (bimorphic pattern). Moreover, the emergence of kidney-shaped abnormal cells or wreath-like multinucleated cells was helpful in diagnosing ALCL. The combination of thesefeatures would be useful in differentiating HL and ALCL. Nevertheless, these two types of lymphomas cannot be definitely distinguished based on cytomorphological features alone. Therefore, the aim of FNAC would be to suggest a specific diagnosis and indicate the need for a biopsy.

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