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Tam NT, Makram AM, Elsheikh R, Khader SAE, Mai AN, Toan NS, Huy NT, Hanh BTM. Assessing the accuracy of the International Academy of Cytology Yokohama System for reporting breast fine needle aspiration biopsy cytology at a Vietnamese oncology centre. Cytopathology 2023; 34:325-333. [PMID: 36988122 DOI: 10.1111/cyt.13231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 02/16/2023] [Accepted: 03/06/2023] [Indexed: 03/30/2023]
Abstract
BACKGROUND Fine needle aspiration biopsy (FNAB), accompanied by classification systems for cytology, can offer a cheap and convenient option for the diagnosis of breast cancer in women with suspicious breast lumps. In this study, we aimed to assess the accuracy of the International Academy of Cytology (IAC) Yokohama system in a Vietnamese oncology centre. METHODS A retrospective cross-sectional study was conducted from November 2021 to April 2022 at Vietnam National Cancer Hospital. We included patients with full hospital records regarding breast lesions for which FNAB was indicated. A total of 803 patients' FNAB specimens were assessed according to the IAC Yokohama system. The basic characteristics were summarised using the appropriate summary measurements. The risk of malignancy (ROM) was calculated for each classification category. RESULTS The median age was 42.7 years (range: 14-85). The mean size of the lesions was 17.9 mm (range: 4-123 mm). We had 215 histopathological reports. The most common benign and malignant diagnoses were fibroadenoma and invasive carcinoma, respectively. The ROM for categories II, III, IV, and V was calculated as 3.4%, 37.5%, 95%, and 99.2% respectively. The sensitivity, specificity, positive predictive value, and negative predictive value were 96.4%, 97.2%, 98.5%, and 93.2%, respectively. CONCLUSION The IAC Yokohama system offers a good option with which to predict underlying breast pathology using a simple and cheap procedure. However, pathologists require continuous training to ensure accurate interpretation of the slides.
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Affiliation(s)
- Nguyen Thi Tam
- Department of Pathology, Hanoi Medical University, Hanoi, Vietnam
- Department of Pathology, Hospital 199, Da Nang, Vietnam
| | - Abdelrahman M Makram
- School of Public Health, Imperial College London, London, UK
- Online Research Club (http://www.onlineresearchclub.org), Nagasaki, Japan
| | - Randa Elsheikh
- Online Research Club (http://www.onlineresearchclub.org), Nagasaki, Japan
- Deanery of Biomedical Sciences at Edinburgh Medical School, University of Edinburgh, Edinburgh, UK
- Faculty of Medicine, October 6 University, Giza, Egypt
| | - Sarah Abd Elaziz Khader
- Online Research Club (http://www.onlineresearchclub.org), Nagasaki, Japan
- Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Anh Nam Mai
- Online Research Club (http://www.onlineresearchclub.org), Nagasaki, Japan
- Faculty of Medicine, College of Medicine and Pharmacy, Duy Tan University, Da Nang, Vietnam
- Institute for Research and Training in Medicine, Biology and Pharmacy, Duy Tan University, Da Nang, Vietnam
| | - Nguyen-Sy Toan
- Faculty of Chemical Technology and Environment, University of Technology and Education, The University of Da Nang, Da Nang, Vietnam
| | - Nguyen Tien Huy
- Online Research Club (http://www.onlineresearchclub.org), Nagasaki, Japan
- School of Global Humanities and Social Sciences, Nagasaki University, Nagasaki, Japan
| | - Bui Thi My Hanh
- Department of Pathology, Hanoi Medical University, Hanoi, Vietnam
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Nikas IP, Vey JA, Proctor T, AlRawashdeh MM, Ishak A, Ko HM, Ryu HS. The Use of the International Academy of Cytology Yokohama System for Reporting Breast Fine-Needle Aspiration Biopsy. Am J Clin Pathol 2022; 159:138-145. [PMID: 36370120 PMCID: PMC9891409 DOI: 10.1093/ajcp/aqac132] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 09/21/2022] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVES To perform the first meta-analysis regarding the pooled risk of malignancy (ROM) of each category of the Yokohama system for reporting breast fine-needle aspiration, as well as assess the latter's diagnostic accuracy using this new system. METHODS Two databases were searched, followed by data extraction, study quality assessment, and statistical analysis. RESULTS The "Insufficient," "Benign," "Atypical," "Suspicious," and "Malignant" Yokohama system categories were associated with a pooled ROM of 17% (95% CI, 10%-28%), 1% (95% CI, 1%-3%), 20% (95% CI, 17%-23%), 86% (95% CI, 79%-92%), and 100% (95% CI, 99%-100%), respectively. When both "Suspicious" and "Malignant" interpretations were regarded as cytologically positive, sensitivity (SN) was 91% (95% CI, 87.6%-93.5%) and false-positive rate (FPR) was 2.33% (95% CI, 1.30-4.14%). A summary receiver operating characteristic curve was constructed and the pooled area under the curve was 97.3%, while the pooled diagnostic odds ratio was 564 (95% CI, 264-1,206), indicating a high level of diagnostic accuracy. When only "Malignant" interpretations were regarded as cytologically positive, the pooled FPR was lower (0.75%; 95% CI, .39%-1.42%) but at the expense of SN (76.61%; 95% CI, 70.05%-82.10%). CONCLUSIONS Despite Yokohama's system early success, more data would be needed to unravel the system's value in clinical practice.
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Affiliation(s)
| | - Johannes A Vey
- Institute of Medical Biometry, University of Heidelberg, Heidelberg, Germany
| | - Tanja Proctor
- Institute of Medical Biometry, University of Heidelberg, Heidelberg, Germany
| | | | - Angela Ishak
- School of Medicine, European University Cyprus, Nicosia, Cyprus
| | - Hyang Mi Ko
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Canada
| | - Han Suk Ryu
- Department of Pathology, Seoul National University College of Medicine, Seoul, Korea,Department of Pathology, Seoul National University Hospital, Seoul, Korea
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Sarangi S, Rao M, Elhence PA, Nalwa A, Bharti JN, Khera S, Vedant D, Vishwajeet V, Vishnoi JR, Sharma N, Pareek P. Risk Stratification of Breast Fine-Needle Aspiration Biopsy Specimens Performed without Radiologic Guidance by Application of the International Academy of Cytology Yokohama System for Reporting Breast Fine-Needle Aspiration Cytopathology. Acta Cytol 2021; 65:483-493. [PMID: 34535580 DOI: 10.1159/000518790] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 07/28/2021] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND OBJECTIVE The International Academy of Cytology (IAC) Yokohama system for reporting breast fine-needle aspiration biopsy (FNAB) cytopathology has been proposed to standardize breast FNAB reporting. The aim of this study was to categorize breast FNAB cases performed by palpation without radiological guidance according to the IAC system, establish the risk of malignancy (ROM) for the categories and assess the system's utility, pitfalls, and implications in low-resource/financial constraint settings. METHODS A retrospective analysis of palpation-guided FNAB of breast lesions performed without radiological guidance between January 2016 and December 2019 was carried out and was correlated with follow-up biopsies wherever available. A total of 1,089 cases were recategorized using the IAC Yokohama system. Histopathology follow-up was available for 400 cases. The data were analysed for ROM, positive predictive value (PPV), and negative predictive value (NPV). RESULTS AND DISCUSSION Out of 1,089 cases, 4.3% (n = 47) cases were categorized as insufficient, 82% (n = 893) as benign, 2.8% (n = 31) as atypical, 2.7% (n = 29) as suspicious of malignancy, and 8.2% (n = 89) as malignant. Some 400 cases had a follow-up biopsy, based on which, the ROM for the categories were 33.3%, 0.4%, 37.5%, 96%, and 100%. The NPV for the benign category was 99.6%. The PPV of the malignant category was 100%, that of combined suspicious of malignancy and malignant categories was 99%, and of combined atypical, suspicious of malignancy, and malignant was 90.6%. CONCLUSION The IAC Yokohama system is useful in standardizing the reporting of cytopathology of breast lesions. FNAB with radiological guidance is ideal but in cases of finance/resource constraints, FNAB by palpation alone is satisfactory if the test result is in the benign, suspicious of malignancy, or malignant categories, which constitute 91.5% of the cases in this study. A repeat ultrasound-guided FNAB and/or core needle biopsy should be recommended for cases in the insufficient/inadequate or atypical categories.
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Affiliation(s)
- Sujata Sarangi
- Department of Pathology and Laboratory medicine, All India Institute of Medical Sciences (AIIMS), Jodhpur, India
| | - Meenakshi Rao
- Department of Pathology and Laboratory medicine, All India Institute of Medical Sciences (AIIMS), Jodhpur, India
| | - Poonam Abhay Elhence
- Department of Pathology and Laboratory medicine, All India Institute of Medical Sciences (AIIMS), Jodhpur, India
| | - Aasma Nalwa
- Department of Pathology and Laboratory medicine, All India Institute of Medical Sciences (AIIMS), Jodhpur, India
| | - Jyotsna N Bharti
- Department of Pathology and Laboratory medicine, All India Institute of Medical Sciences (AIIMS), Jodhpur, India
| | - Sudeep Khera
- Department of Pathology and Laboratory medicine, All India Institute of Medical Sciences (AIIMS), Jodhpur, India
| | - Deepak Vedant
- Department of Pathology and Laboratory medicine, All India Institute of Medical Sciences (AIIMS), Jodhpur, India
| | - Vikarn Vishwajeet
- Department of Pathology and Laboratory medicine, All India Institute of Medical Sciences (AIIMS), Jodhpur, India
| | - Jeewan Ram Vishnoi
- Department of Surgical Oncology, All India Institute of Medical Sciences (AIIMS), Jodhpur, India
| | - Naveen Sharma
- Department of General Surgery, All India Institute of Medical Sciences (AIIMS), Jodhpur, India
| | - Puneet Pareek
- Department of Radiation Oncology, All India Institute of Medical Sciences (AIIMS), Jodhpur, India
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Field AS, Raymond WA, Schmitt F. The International Academy of Cytology Yokohama System for Reporting Breast Fine Needle Aspiration Biopsy Cytopathology: Recent research findings and the future. Cancer Cytopathol 2021; 129:847-851. [PMID: 34029451 DOI: 10.1002/cncy.22450] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 04/16/2021] [Indexed: 12/12/2022]
Affiliation(s)
- Andrew S Field
- St Vincent's Hospital Medical School, University of New South Wales, Sydney, New South Wales, Australia.,Medical School, Notre Dame University, Sydney, New South Wales, Australia.,Department of Anatomical Pathology, St. Vincent's Hospital, Sydney, New South Wales, Australia
| | - Wendy A Raymond
- Department of Surgical Pathology, Flinders Medical Centre/Flinders University, Adelaide, South Australia, Australia.,Clinpath Laboratories, Adelaide, South Australia, Australia
| | - Fernando Schmitt
- Medical Faculty of Porto University, Porto, Portugal.,Institute of Molecular Pathology and Immunology of Porto University, Porto, Portugal.,Health Research Network, Porto, Portugal
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