Journal of Pathology and Translational Medicine

Original Articles

Effects of Fixation and Storage of Human Tissue Samples on Nucleic Acid Preservation: Soo Kyung Nam, Joon Im, Yoonjin Kwak, Nayoung Han, Kyung Han Nam, An Na Seo, Hye Seung Lee; Korean J Pathol. 2014;48(1):36-42. Published online February 25, 2014; DOI: https://doi.org/10.4132/KoreanJPathol.2014.48.1.36

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Background

Because of recent advances in the molecular diagnosis of cancer patients, tissue quality has become more important in daily practice.

Methods

To evaluate the effects of fixative, duration of fixation, decalcification, and storage periods on nucleic acid integrity, DNA and RNA were extracted from gastrointestinal cancer tissue. The yield and purity were analyzed, and polymerase chain reaction (PCR) for glyceraldehyde 3-phosphate dehydrogenase (GAPDH; 60 bp), β-actin (148 bp), and human growth hormone (hGH; 434 bp) and real-time reverse transcription-PCR for β-actin (97 bp) were performed.

Results

All formalin-fixed paraffin-embedded (FFPE) and methacarn-fixed paraffin-embedded (MFPE) samples tested positive for GAPDH and β-actin by PCR. hGH was successfully detected in all MFPE samples, but in only 46.7% of the FFPE samples. Prolonged formalin fixation resulted in fewer GAPDH and β-actin PCR products, and amplification of hGH was not successful. The PCR and reverse transcription-PCR results were significantly affected by the duration of decalcification. The yield, purity, and integrity of mRNA progressively decreased with increased storage periods of paraffin blocks.

Conclusions

Fixation and storage should therefore be standardized in order to improve the quality of molecular pathologic diagnosis.

Citations

Citations to this article as recorded by

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Outcome of "Atypical Squamous Cells" in Cervical Cytology: Follow-up Assessment by Loop Electrical Excision Procedure: Joon Seon Song, Ilseon Hwang, Gyungyub Gong; Korean J Pathol. 2012;46(4):359-364. Published online August 23, 2012; DOI: https://doi.org/10.4132/KoreanJPathol.2012.46.4.359

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Abstract PDF

Background

We have retrospectively assessed the incidence and outcome of women diagnosed during a hospital-based cytology screening program with "atypical squamous cells (ASC)" and followed-up with loop electrical excision procedure (LEEP).

Methods

We analyzed 173,947 cases of cervical smears' follow-up cytology and histology findings. Previous or archival cytology with LEEP results were retrieved for 390 women with ASC of undetermined significance (ASC-US) and 112 with ASC, cannot exclude high-grade squamous intraepithelial lesion (ASC-H).

Results

On the follow-up cytology, of the 390 women initially diagnosed with ASC-US, 130 (33.3%) had no follow-up records of smears before LEEP; smears of 18 (4.6%) were negative for cytologic abnormalities, 193 (49.5%) were ASC-US, 24 (6.2%) were ASC-H, 111 (28.5%) were low grade squamous intraepithelial lesion (SIL), and 44 (11.4%) were high grade SIL. LEEP findings in these 390 women showed that 183 (46.9%) were negative, 73 (18.7%) were graded as cervical intraepithelial neoplasia (CIN) 1, 25 (6.4%) as CIN 2, 102 (26.2%) as CIN 3, and 7 (1.8%) had carcinoma. LEEP was performed in 112 women initially diagnosed with ASC-H; 36 (32.1%) were negative, 4 (3.6%) were graded as CIN 1, 7 (6.3%) as CIN 2, 60 (53.6%) as CIN 3, and 5 (4.5%) with carcinoma.

Conclusions

Patients with ASC-H smears were at increased risk of SIL or carcnoma compared with patients with ASC-US. Careful follow-up is required in ASC patients.

Citations

Citations to this article as recorded by

Incisal margin condition after LEEP for cervical intraepithelial neoplasia patients and prognosis
Hong Chen, Xiufeang Liu, Lina Xu
Experimental and Therapeutic Medicine.2016; 12(2): 1019. CrossRef

Comparative Study of Relative Value for Diagnostic Procedure of Surgical Pathology in Korea and United States.: Ilseon Hwang, Yu Na Kang, Kun Young Kwon, Sun Young Kwon, Sang Pyo Kim, Sang Sook Lee, Hye Ra Jung, Mi Sun Choe; Korean J Pathol. 2011;45(1):9-14.; DOI: https://doi.org/10.4132/KoreanJPathol.2011.45.1.9

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Abstract PDF

BACKGROUND
Pathologic examination is a very important diagnostic procedure. It is the most important method to decide the therapeutic plan and to predict the prognosis of cancer patients. The Resource-Based Relative Value Scale (RBRVS) is a schema used to determine how much money medical providers should be paid. In Korea, a modified RBRVS has been used since the year 2000.
METHODS
We researched the July 2010 RBRVS for Korea and the US medicare. The individual Relative Evaluation Index (REI) is defined as the ratio of an individual RBRVS to the mean RBRVS. The REIs of pathologic examination in Korea and America were compared.
RESULTS
For an endoscopic biopsy specimen, the pathologic examination REI in Korea was 55.4% of the American REI. The Korean REI of a prostate biopsy (8 sites) was only 5.7% of the American REI. The Korean REI was 28.1% of the American REI for the hysterectomy for uterine myoma, and the Korean REI was 67.6% of the American REI for resection of stomach or colon cancer.
CONCLUSIONS
The RBRVS of pathologic examination in Korea remains undervalued. Considering the importance of pathologic examination in medicine, the RBRVS in Korea should be increased.

Citations

Citations to this article as recorded by

Diminutive and Small Colorectal Polyps: The Pathologist's Perspective
Yun Kyung Kang
Clinical Endoscopy.2014; 47(5): 404. CrossRef
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
Korean Journal of Pathology.2013; 47(3): 245. CrossRef

Application of Bethesda System for Reporting Thyroid Aspiration Cytology.: Kyungji Lee, Chan Kwon Jung, Kyo Young Lee, Ja Seong Bae, Dong Jun Lim, So Lyung Jung; Korean J Pathol. 2010;44(5):521-527.; DOI: https://doi.org/10.4132/KoreanJPathol.2010.44.5.521

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65 Download
20 Crossref

Abstract PDF

BACKGROUND
The Bethesda classification system for reporting on thyroid fine-needle aspiration (FNA) cytology was recently proposed by the National Cancer Institute, USA. We aimed to report our experience with applying this system for thyroid FNA, with a focus on comparing it with the four categorical system.
METHODS
We retrospectively reviewed the 4,966 thyroid FNAs that were performed at the Seoul St. Mary's Hospital between October 2008 and September 2009. All the FNAs were classified according to the Bethesda system and the four tier system.
RESULTS
The cytologic diagnoses of the Bethesda system included 10.0% unsatisfactory, 67.7% benign, 3.1% atypia of undetermined significance, 0.6% follicular neoplasm, 0.5% follicular neoplasm, Hurthle cell type, 5.1% suspicious for malignancy and 13.0% malignancy. Using four tier system, 10.1%, 67.6%, 9.3%, and 13% were diagnosed as unsatisfactory, negative for malignancy, atypical cells and malignancy, respectively. Of the 4,966 nodules, 905 were histologically confirmed. The specificity of the Bethesda system and the four tier system for diagnosing malignancy was 99.6% and 82.6%, respectively.
CONCLUSIONS
The Bethesda system can classify indeterminate thyroid nodules into more detailed categories and provide clinicians with useful information for management.

Citations

Citations to this article as recorded by

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PLOS ONE.2021; 16(4): e0247807. CrossRef
Subclassification of the Bethesda Category III (AUS/FLUS): A study of thyroid FNA cytology based on ThinPrep slides from the National Cancer Center in China
Huan Zhao, HuiQin Guo, LinLin Zhao, Jian Cao, Yue Sun, Cong Wang, ZhiHui Zhang
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Hadi A Al-Hakami, Reem Al-Mohammadi, Rami Al-Mutairi, Haya Al-Subaie, Mohammed A Al Garni
Indian Journal of Surgical Oncology.2020; 11(2): 268. CrossRef
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Vijayalakshmi Padmanabhan, Carrie B Marshall, Guliz Akdas Barkan, Mohiedean Ghofrani, Alice Laser, Idris Tolgay Ocal, Charles David Sturgis, Rhona Souers, Daniel F.I Kurtycz
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The Use of the Bethesda System for Reporting Thyroid Cytopathology in Korea: A Nationwide Multicenter Survey by the Korean Society of Endocrine Pathologists
Mimi Kim, Hyo Jin Park, Hye Sook Min, Hyeong Ju Kwon, Chan Kwon Jung, Seoung Wan Chae, Hyun Ju Yoo, Yoo Duk Choi, Mi Ja Lee, Jeong Ja Kwak, Dong Eun Song, Dong Hoon Kim, Hye Kyung Lee, Ji Yeon Kim, Sook Hee Hong, Jang Sihn Sohn, Hyun Seung Lee, So Yeon Pa
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K. Kakudo, M. Higuchi, M. Hirokawa, S. Satoh, C. K. Jung, A. Bychkov
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Bethesda System for Reporting Thyroid Cytopathology: A three-year study at a tertiary care referral center in Saudi Arabia
Mohamed Abdulaziz Al Dawish, Asirvatham Alwin Robert, Aljuboury Muna, Alkharashi Eyad, Abdullah Al Ghamdi, Khalid Al Hajeri, Mohammed A Thabet, Rim Braham
World Journal of Clinical Oncology.2017; 8(2): 151. CrossRef
Thyroid Fine-Needle Aspiration Cytology Practice in Korea
Yoon Jin Cha, Ju Yeon Pyo, SoonWon Hong, Jae Yeon Seok, Kyung-Ju Kim, Jee-Young Han, Jeong Mo Bae, Hyeong Ju Kwon, Yeejeong Kim, Kyueng-Whan Min, Soonae Oak, Sunhee Chang
Journal of Pathology and Translational Medicine.2017; 51(6): 521. CrossRef
Malignancy Risk for Fine-Needle Aspiration of Thyroid Nodules according to the Bethesda System for Reporting Thyroid Cytopathology, at King Abdul-Aziz, National Guard Hospital
Omimah Abdullah
Journal of Otolaryngology-ENT Research.2017;[Epub] CrossRef
The Bethesda System for Reporting Thyroid Fine-Needle Aspiration Cytology: A Kuwaiti Experience - A Cytohistopathological Study of 374 Cases
Kusum Kapila, Laila Qadan, Rola H. Ali, Mohammed Jaragh, Sara S. George, Bahiya E. Haji
Acta Cytologica.2015; 59(2): 133. CrossRef
Review of the Bethesda System for Reporting Thyroid Cytopathology: A Local Study in Bohol Island, Philippines
Annette L. Salillas, Faye Candice S. Sun, Emelisa G. Almocera
Acta Cytologica.2015; 59(1): 77. CrossRef
The role of core needle biopsy in the preoperative diagnosis of follicular neoplasm of the thyroid
Hye Sook Min, Ji‐Hoon Kim, Inseon Ryoo, So Lyung Jung, Chan Kwon Jung
APMIS.2014; 122(10): 993. CrossRef
Incidence and Malignancy Rates of Diagnoses in the Bethesda System for Reporting Thyroid Aspiration Cytology: An Institutional Experience
Ji Hye Park, Sun Och Yoon, Eun Ju Son, Hye Min Kim, Ji Hae Nahm, SoonWon Hong
Korean Journal of Pathology.2014; 48(2): 133. CrossRef
Thyroid “Atypia of undetermined significance” with nuclear atypia has high rates of malignancy and BRAF mutation
Hyo Jin Park, Jae Hoon Moon, Cha Kyong Yom, Kyu Hyung Kim, June Young Choi, Sang Il Choi, Soon‐Hyun Ahn, Woo‐Jin Jeong, Won Woo Lee, So Yeon Park
Cancer Cytopathology.2014; 122(7): 512. CrossRef
Molecular Genotyping of Follicular Variant of Papillary Thyroid Carcinoma Correlates with Diagnostic Category of Fine-Needle Aspiration Cytology: Values of RAS Mutation Testing
Sang Ryung Lee, Chan Kwon Jung, Tae Eun Kim, Ja Seong Bae, So Lyung Jung, Yeong Jin Choi, Chang Suk Kang
Thyroid.2013; 23(11): 1416. CrossRef
Fine Needle Aspiration Cytology of Thyroid Follicular Neoplasm: Cytohistologic Correlation and Accuracy
Changyoung Yoo, Hyun Joo Choi, Soyoung Im, Ji Han Jung, Kiouk Min, Chang Suk Kang, Young-Jin Suh
Korean Journal of Pathology.2013; 47(1): 61. CrossRef
Diagnostic Dilemma of a Follicular Lesions/Neoplasm in Thyroid Fine Needle Aspiration Cytology
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Review of atypical cytology of thyroid nodule according to the Bethesda system and its beneficial effect in the surgical treatment of papillary carcinoma
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Journal of the Korean Surgical Society.2011; 81(2): 75. CrossRef

Guidelines for Pathologic Study of Gastric Cancer.: Korean J Pathol. 1992;26(2):154-163.

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Abstract PDF: Gastric cancer is the most common malignant neoplasm among Koreans, and the pathologists's daily diagnostic competency on gastric cancer at any hospital setting plays a critical implication not only in the quality of clinical service but also to the determination of patient's prognosis. Thus, adoption of a unified assessment system based on comprehensive understanding of pathologic features together with their active participation has been crucially demanded. Nevertheless, a considerable difference in handling procedures and diagnostic approach on gastric cancer among institutions apparently resulted in an extreme difficulty in exchange of clinicopathologic informations and in the nationwide survey. It is, therefore, essential and be the first step to develop a practical but scientific and reproducible classification of gastric cancer with its diverse gross and histologic findings. Based on the following basic principles, the Subcommittee on Gastric Cancer under the Gastrointestinal Study Group of the Korean Society of Pathologists has been requested to develop the guidelines of future pathologic study of gastric cancer to meet the above needs and be efficiently used with ease among the society members. 1) The prerequisite for pathologic classification of gastric cancer starts with consistency in handling of the resected stomach before its further examination. Thus, the guideline shall limits its scope only with the minimum agreement. 2) The classification should be simple and practical so that all pathologists can use with ease and with high reproducibility. 3) All the gross and microscopic findings which have been considered to be the prognosis-related factors should be included in every pathologic procedures to help future information exchange among pathologists and clinicians and to provide a meaningful role in determination of patient's prognosis. 4) The classification should be interchangeable and stand with compatibility among WHO and other internationally accepted classifications. 5) The guideline accepts in part the staging system of American Joint Commitee on Cancer, classification of early gastric cancer proposed by the Japanese Society of Gastrointestinal Endoscopy, and the General Rules of Stomach Cancer Study by Japanese Research Society of Gastric Cancer, until otherwise developed and accepted by the Korean Society of Pathologists. 6) The guideline should not interfere with each institution-based special study. The details of the handling procedures of the resected stomach cancer, its gross and histologic classifications and descriptive methods of prognostic factors are supplemented with illustrations.

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