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Wang X, Abi-Raad R, Tang H, Cai G. Ki-67 index assessment on FNA specimens of gastrointestinal stromal tumor: Correlation with mitotic rate and potential predictive value for risk stratification. Cancer Cytopathol 2022; 130:974-982. [PMID: 35876606 DOI: 10.1002/cncy.22630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 06/12/2022] [Accepted: 06/28/2022] [Indexed: 01/04/2023]
Abstract
BACKGROUND Risk assessment of gastrointestinal stromal tumor (GIST) is challenging on cytology specimens. This study aims to determine whether Ki-67 index evaluated on fine-needle aspiration (FNA) specimens can correlate with the mitotic rate of GIST in surgical specimens and provide further risk assessment. METHODS Cases with cell blocks containing adequate tumor cells and surgical resections were included. Ki-67 immunostain was retrospectively performed on cell block sections, and Ki-67 index was calculated on the "hot spot" areas. RESULTS This study included 50 GIST cases from stomach (n = 45; 90%), duodenum (n = 4; 8%), and distal esophagus (n = 1; 2%). The tumor size ranged from 1.5 cm to 21 cm (mean, 5.4 cm). Based on the mitotic count, 37 GISTs (74%) had low mitotic rate (LMR) and 13 GISTs (26%) had high mitotic rate (HMR). The spindle cell, epithelioid, and mixed types accounted for 60%, 14%, and 26% of GIST, respectively. Ki-67 index counted on cell block sections correlated well with mitotic count evaluated in surgical specimens (r = 0.8031). Mean Ki-67 index was higher in HMR than LMR groups (3.5% vs. 1%, p < .001). The receiver operating characteristic curve using Ki-67 index to predict mitotic rate was further analyzed, and area under the curve was 0.839. Using a cutoff of 2.5% yielded a sensitivity of 70% at 92% specificity. CONCLUSIONS This study demonstrates good correlations between Ki-67 index and mitotic count or risk stratification, suggesting that Ki-67 index evaluated on cytology specimens may offer a promising approach to preoperatively predict the mitotic rate and risk of GIST.
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Affiliation(s)
- Xi Wang
- Department of Pathology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Rita Abi-Raad
- Department of Pathology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Haiming Tang
- Department of Pathology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Guoping Cai
- Department of Pathology, Yale University School of Medicine, New Haven, Connecticut, USA.,Yale Cancer Center, Yale University School of Medicine, New Haven, Connecticut, USA
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Pagano N, Ricci C, Ingaldi C, Sadalla S, Fabbri A, Alberici L, Impellizeri G, Pallio S, Zagari RM, De Leo A, Cescon M, Casadei R. Performance of EUS-FNB in solid pancreatic masses: a lesson from 463 consecutive procedures and a practical nomogram. Updates Surg 2021; 74:945-952. [PMID: 34714535 DOI: 10.1007/s13304-021-01198-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 10/22/2021] [Indexed: 11/09/2022]
Abstract
The study's main goal was the diagnostic adequacy of pancreatic endoscopic ultrasonographic (EUS) fine-needle biopsy (FNB) and associated predictive factors. The secondary objective was to define the diagnostic accuracy of EUS-FNB in the diagnosis of pancreatic masses and pancreatic malignancies. None of the studies reported the diagnostic adequacy and accuracy of EUS. We retrospectively identified patients with solid pancreatic lesions that underwent EUS-FNB between 2013, and 2018. We calculated diagnostic adequacy and related factors. Using definitive histology on the surgically resected specimen as the gold standard, we calculated diagnostic accuracy, sensitivity, specificity, positive predictive value, and negative predictive value of EUS-FNB. We identified a total of 463 procedures. Diagnostic specimens were adequate in 436 procedures (94.1%), while 27 biopsies provided insufficient samples (5.9%). The multivariate analysis showed that lesion size and needle caliper were the only factors influencing diagnostic adequacy. The use of a biopsy needle (OR 0.69, 95% CI 0.30-0.1.63, P 0.400) did not improve sample adequacy. We calculated sensitivity (100%), specificity (93.2%), diagnostic accuracy (93.2%), positive predictive value (97.1%), and negative predictive value (100%) using resected specimen as the gold standard. We found no significant complications. EUS-FNB is a reliable technique for the histological characterization of solid pancreatic masses.
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Affiliation(s)
- Nico Pagano
- Division of Gastroenterology, IRCCS Azienda Ospedaliero, Universitaria Di Bologna, via Albertoni 15, Bologna, Italy
| | - Claudio Ricci
- Division of Pancreatic Surgery, IRCCS Azienda Ospedaliero, Universitaria Di Bologna, via Albertoni 15, Bologna, Italy. .,Department of Internal Medicine and Surgery (DIMEC), Alma Mater Studiorum, University of Bologna, Bologna, Italy.
| | - Carlo Ingaldi
- Division of Pancreatic Surgery, IRCCS Azienda Ospedaliero, Universitaria Di Bologna, via Albertoni 15, Bologna, Italy.,Department of Internal Medicine and Surgery (DIMEC), Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Sinan Sadalla
- Division of Gastroenterology, IRCCS Azienda Ospedaliero, Universitaria Di Bologna, via Albertoni 15, Bologna, Italy.,Department of Internal Medicine and Surgery (DIMEC), Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Andrea Fabbri
- Division of Gastroenterology, IRCCS Azienda Ospedaliero, Universitaria Di Bologna, via Albertoni 15, Bologna, Italy.,Department of Internal Medicine and Surgery (DIMEC), Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Laura Alberici
- Division of Pancreatic Surgery, IRCCS Azienda Ospedaliero, Universitaria Di Bologna, via Albertoni 15, Bologna, Italy.,Department of Internal Medicine and Surgery (DIMEC), Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Giovanna Impellizeri
- Division of Gastroenterology, IRCCS Azienda Ospedaliero, Universitaria Di Bologna, via Albertoni 15, Bologna, Italy.,Department of Internal Medicine and Surgery (DIMEC), Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Socrate Pallio
- Dipartimento di Medicina Clinica e Sperimentale, University of Messina, Messina, Italy
| | - Rocco Maurizio Zagari
- Division of Gastroenterology, IRCCS Azienda Ospedaliero, Universitaria Di Bologna, via Albertoni 15, Bologna, Italy.,Department of Internal Medicine and Surgery (DIMEC), Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Antonio De Leo
- Pathology Unit, IRCCS Azienda Ospedaliero, Universitaria Di Bologna, via Albertoni 15, Bologna, Italy.,Department of Specialistic, Diagnostic and Experimental Medicine (DIMES), Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Matteo Cescon
- Transplantation and Hepatobiliary Unit, IRCCS Azienda Ospedaliero, Universitaria Di Bologna, via Albertoni 15, Bologna, Italy.,Department of Internal Medicine and Surgery (DIMEC), Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Riccardo Casadei
- Division of Pancreatic Surgery, IRCCS Azienda Ospedaliero, Universitaria Di Bologna, via Albertoni 15, Bologna, Italy.,Department of Internal Medicine and Surgery (DIMEC), Alma Mater Studiorum, University of Bologna, Bologna, Italy
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Choi HJ, Moon JH, Kim HK, Lee YN, Lee TH, Cha SW, Cho YD, Park SH. KRAS mutation analysis by next-generation sequencing in endoscopic ultrasound-guided sampling for solid liver masses. J Gastroenterol Hepatol 2017; 32:154-162. [PMID: 27118240 DOI: 10.1111/jgh.13423] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/16/2016] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND AIM KRAS mutation analysis may provide ancillary diagnostic yield in an endoscopic ultrasound (EUS)-guided histopathological evaluation. We evaluated the clinical impact of KRAS mutation analysis with cytological and histological evaluations in EUS-guided tissue sampling, using a core biopsy needle for solid liver masses. METHODS EUS-guided fine needle biopsy (EUS-FNB) using a core biopsy needle was performed in patients with primary or metastatic liver masses that were suspected malignancies. KRAS mutations were analyzed in all specimens obtained. The peptide nucleic acid (PNA)-mediated polymerase chain reaction (PCR) clamping method was compared with a next-generation sequencing (NGS) method for detecting KRAS mutations. RESULTS EUS-FNB with a core biopsy needle was performed in 28 patients with solid liver masses located in the liver's left lobe. The diagnostic accuracies for malignancy of on-site cytology, cytology using Papanicolaou staining, and histology including immunohistochemical stains were 82.1%, 85.7%, and 89.3%, respectively. KRAS gene mutations were observed in 14.3% of patients by the PNA-PCR clamping method. The NGS method detected more KRAS mutations than the PNA-PCR clamping method: in 25% of patients. Adding the results of KRAS mutation analysis to the cytohistopathological evaluation, the overall diagnostic accuracy of EUS-guided tissue sampling was 96.4%. CONCLUSIONS EUS-guided tissue sampling for solid liver masses in the left lobe provided high diagnostic accuracy from cytological and histological evaluations. KRAS mutation analysis provided additional diagnostic yield in patients with inconclusive cytohistopathological results from EUS-guided tissue sampling. The NGS method detected additional KRAS mutations in patients with negative PNA-mediated PCR clamping test results.
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Affiliation(s)
- Hyun Jong Choi
- Digestive Disease Center and Research Institute, Department of Internal Medicine, SoonChunHyang University School of Medicine, Bucheon and Seoul, Korea
| | - Jong Ho Moon
- Digestive Disease Center and Research Institute, Department of Internal Medicine, SoonChunHyang University School of Medicine, Bucheon and Seoul, Korea
| | - Hee Kyung Kim
- Department of Pathology, SoonChunHyang University School of Medicine, Bucheon and Seoul, Korea
| | - Yun Nah Lee
- Digestive Disease Center and Research Institute, Department of Internal Medicine, SoonChunHyang University School of Medicine, Bucheon and Seoul, Korea
| | - Tae Hoon Lee
- Digestive Disease Center and Research Institute, Department of Internal Medicine, SoonChunHyang University School of Medicine, Bucheon and Seoul, Korea
| | - Sang-Woo Cha
- Digestive Disease Center and Research Institute, Department of Internal Medicine, SoonChunHyang University School of Medicine, Bucheon and Seoul, Korea
| | - Young Deok Cho
- Digestive Disease Center and Research Institute, Department of Internal Medicine, SoonChunHyang University School of Medicine, Bucheon and Seoul, Korea
| | - Sang-Heum Park
- Digestive Disease Center and Research Institute, Department of Internal Medicine, SoonChunHyang University School of Medicine, Bucheon and Seoul, Korea
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Matsubayashi H, Matsui T, Yabuuchi Y, Imai K, Tanaka M, Kakushima N, Sasaki K, Ono H. Endoscopic ultrasonography guided-fine needle aspiration for the diagnosis of solid pancreaticobiliary lesions: Clinical aspects to improve the diagnosis. World J Gastroenterol 2016; 22:628-640. [PMID: 26811612 PMCID: PMC4716064 DOI: 10.3748/wjg.v22.i2.628] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Revised: 09/20/2015] [Accepted: 11/13/2015] [Indexed: 02/06/2023] Open
Abstract
Endoscopic ultrasonography-guided fine-needle aspiration (EUS-FNA) has been applied to pancreaticobiliary lesions since the 1990s and is in widespread use throughout the world today. We used this method to confirm the pathological evidence of the pancreaticobiliary lesions and to perform suitable therapies. Complications of EUS-FNA are quite rare, but some of them are severe. Operators should master conventional EUS observation and experience a minimum of 20-30 cases of supervised EUS-FNA on non-pancreatic and pancreatic lesions before attempting solo EUS-FNA. Studies conducted on pancreaticobiliary EUS-FNA have focused on selection of suitable instruments (e.g., needle selection) and sampling techniques (e.g., fanning method, suction level, with or without a stylet, optimum number of passes). Today, the diagnostic ability of EUS-FNA is still improving; the detection of pancreatic cancer (PC) currently has a sensitivity of 90%-95% and specificity of 95%-100%. In addition to PC, a variety of rare pancreatic tumors can be discriminated by conducting immunohistochemistry on the FNA materials. A flexible, large caliber needle has been used to obtain a large piece of tissue, which can provide sufficient histological information to be helpful in classifying benign pancreatic lesions. EUS-FNA can supply high diagnostic yields even for biliary lesions or peri-pancreaticobiliary lymph nodes. This review focuses on the clinical aspects of EUS-FNA in the pancreaticobiliary field, with the aim of providing information that can enable more accurate and efficient diagnosis.
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Kim EY. Fine-needle biopsy: should this be the first choice in endoscopic ultrasound-guided tissue acquisition? Clin Endosc 2014; 47:425-8. [PMID: 25325002 PMCID: PMC4198559 DOI: 10.5946/ce.2014.47.5.425] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2014] [Accepted: 07/26/2014] [Indexed: 12/13/2022] Open
Abstract
Endoscopic ultrasound (EUS)-guided tissue acquisition is an indispensable technique for the diagnosis of many diseases of the gastrointestinal tract and adjacent structures. EUS-guided fine-needle aspiration (EUS-FNA) is known for its high accuracy and low complication rate. However, the outcome of EUS-FNA highly depends on several factors such as the location and characteristics of the lesion, endosonographer's experience, technique of sampling and sample preparation, type and size of the needle used, and presence of a cytopathologist for rapid on-site examination. EUS-guided fine-needle biopsy is useful to obtain core tissue samples with relatively fewer passes. Aspiration of core tissue with preserved architecture is beneficial for the diagnosis of certain diseases and the performance of ancillary testing such as tumor molecular profiling. Issues related to needle size, type, and their acquired samples for cytologic and histologic evaluation are discussed here.
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Affiliation(s)
- Eun Young Kim
- Department of Internal Medicine, Catholic University of Daegu School of Medicine, Daegu, Korea
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