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Itonaga M, Ashida R, Kitano M. Updated techniques and evidence for endoscopic ultrasound-guided tissue acquisition from solid pancreatic lesions. DEN OPEN 2025; 5:e399. [PMID: 38911353 PMCID: PMC11190023 DOI: 10.1002/deo2.399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2024] [Accepted: 06/03/2024] [Indexed: 06/25/2024]
Abstract
Endoscopic ultrasound-guided tissue acquisition (EUS-TA), including fine-needle aspiration (EUS-FNA) and fine-needle biopsy (EUS-FNB), has revolutionized specimen collection from intra-abdominal organs, especially the pancreas. Advances in personalized medicine and more precise treatment have increased demands to collect specimens with higher cell counts, while preserving tissue structure, leading to the development of EUS-FNB needles. EUS-FNB has generally replaced EUS-FNA as the procedure of choice for EUS-TA of pancreatic cancer. Various techniques have been tested for their ability to enhance the diagnostic performance of EUS-TA, including multiple methods of sampling at the time of puncture, on-site specimen evaluation, and specimen processing. In addition, advances in next-generation sequencing have made comprehensive genomic profiling of EUS-TA samples feasible in routine clinical practice. The present review describes updates in EUS-TA sampling techniques of pancreatic lesions, as well as methods for their evaluation.
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Affiliation(s)
- Masahiro Itonaga
- Second Department of Internal MedicineWakayama Medical UniversityWakayamaJapan
| | - Reiko Ashida
- Second Department of Internal MedicineWakayama Medical UniversityWakayamaJapan
| | - Masayuki Kitano
- Second Department of Internal MedicineWakayama Medical UniversityWakayamaJapan
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Iwai T, Kida M, Okuwaki K, Watanabe M, Adachi K, Ishizaki J, Hanaoka T, Tamaki A, Tadehara M, Imaizumi H, Kusano C. Deep learning analysis for differential diagnosis and risk classification of gastrointestinal tumors. Scand J Gastroenterol 2024; 59:925-932. [PMID: 38950889 DOI: 10.1080/00365521.2024.2368241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 05/24/2024] [Accepted: 06/08/2024] [Indexed: 07/03/2024]
Abstract
OBJECTIVES Recently, artificial intelligence (AI) has been applied to clinical diagnosis. Although AI has already been developed for gastrointestinal (GI) tract endoscopy, few studies have applied AI to endoscopic ultrasound (EUS) images. In this study, we used a computer-assisted diagnosis (CAD) system with deep learning analysis of EUS images (EUS-CAD) and assessed its ability to differentiate GI stromal tumors (GISTs) from other mesenchymal tumors and their risk classification performance. MATERIALS AND METHODS A total of 101 pathologically confirmed cases of subepithelial lesions (SELs) arising from the muscularis propria layer, including 69 GISTs, 17 leiomyomas and 15 schwannomas, were examined. A total of 3283 EUS images were used for training and five-fold-cross-validation, and 827 images were independently tested for diagnosing GISTs. For the risk classification of 69 GISTs, including very-low-, low-, intermediate- and high-risk GISTs, 2,784 EUS images were used for training and three-fold-cross-validation. RESULTS For the differential diagnostic performance of GIST among all SELs, the accuracy, sensitivity, specificity and area under the receiver operating characteristic (ROC) curve were 80.4%, 82.9%, 75.3% and 0.865, respectively, whereas those for intermediate- and high-risk GISTs were 71.8%, 70.2%, 72.0% and 0.771, respectively. CONCLUSIONS The EUS-CAD system showed a good diagnostic yield in differentiating GISTs from other mesenchymal tumors and successfully demonstrated the GIST risk classification feasibility. This system can determine whether treatment is necessary based on EUS imaging alone without the need for additional invasive examinations.
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Affiliation(s)
- Tomohisa Iwai
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
| | - Mitsuhiro Kida
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
| | - Kosuke Okuwaki
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
| | - Masafumi Watanabe
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
| | - Kai Adachi
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
| | - Junro Ishizaki
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
| | - Taro Hanaoka
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
| | - Akihiro Tamaki
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
| | - Masayoshi Tadehara
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
| | - Hiroshi Imaizumi
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
| | - Chika Kusano
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
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Chong CCN, Pittayanon R, Pausawasdi N, Bhatia V, Okuno N, Tang RSY, Cheng TY, Kuo YT, Oh D, Song TJ, Kim TH, Hara K, Chan AWH, Leung HHW, Yang A, Jin Z, Xu C, Lakhtakia S, Wang HP, Seo DW, Teoh AYB, Ho LKY, Kida M. Consensus statements on endoscopic ultrasound-guided tissue acquisition. Guidelines from the Asian Endoscopic Ultrasound Group. Dig Endosc 2024; 36:871-883. [PMID: 38433315 DOI: 10.1111/den.14768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 01/23/2024] [Indexed: 03/05/2024]
Abstract
OBJECTIVES This consensus was developed by the Asian EUS Group (AEG), who aimed to formulate a set of practice guidelines addressing various aspects of endoscopic ultrasound-guided tissue acquisition (EUS-TA). METHODS The AEG initiated the development of consensus statements and formed an expert panel comprising surgeons, gastroenterologists, and pathologists. Three online consensus meetings were conducted to consolidate the statements and votes. The statements were presented and discussed in the first two consensus meetings and revised according to comments. Final voting was conducted at a third consensus meeting. The Grading of Recommendations, Assessment, Development, and Evaluation system was adopted to define the strength of the recommendations and quality of evidence. RESULTS A total of 20 clinical questions and statements regarding EUS-TA were formulated. The committee recommended that fine-needle biopsy (FNB) needles be preferred over conventional fine-needle aspiration (FNA) needles for EUS-TA of subepithelial lesions. For solid pancreatic masses, rapid on-site evaluation is not routinely recommended when FNB needles are used. For dedicated FNB needles, fork-tip and Franseen-tip needles have essentially equivalent performance. CONCLUSION This consensus provides guidance for EUS-TA, thereby enhancing the quality of EUS-TA.
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Affiliation(s)
- Charing Ching-Ning Chong
- Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Rapat Pittayanon
- Division of Gastroenterology, Department of Medicine, Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital, The Thai Red Cross, Bangkok, Thailand
| | - Nonthalee Pausawasdi
- Division of Gastroenterology, Department of Internal Medicine, Faculty of Medicine Siriraj Hospital, Siriraj Endoscopy Center, Mahidol University, Bangkok, Thailand
| | - Vikram Bhatia
- Department of Hepatology, Institute of Liver and Biliary Sciences, New Delhi, India
| | - Nozomi Okuno
- Department of Gastroenterology, Aichi Cancer Center, Aichi, Japan
| | - Raymond Shing-Yan Tang
- Department of Medicine and Therapeutics, Prince of Wales Hospital, Institute of Digestive Diseases, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Tsu-Yao Cheng
- Department of Laboratory Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Yu-Ting Kuo
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Dongwook Oh
- Department of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Tae Jun Song
- Department of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
| | - Tae Hyeon Kim
- Department of Internal Medicine, Wonkwang University Hospital, Iksan, Korea
| | - Kazuo Hara
- Department of Gastroenterology, Aichi Cancer Center, Aichi, Japan
| | - Anthony Wing-Hung Chan
- Department of Anatomical and Cellular Pathology, Laboratory of Translational Oncology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Howard Ho Wai Leung
- Department of Anatomical and Cellular Pathology, Laboratory of Translational Oncology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Aiming Yang
- Department of Gastroenterology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhendong Jin
- Department of Gastroenterology, Changhai Hospital, Shanghai, China
| | - Can Xu
- Department of Gastroenterology, Changhai Hospital, Shanghai, China
| | - Sundeep Lakhtakia
- Department of Gastroenterology, Asian Institute of Gastroenterology, Hyderabad, India
| | - Hsiu-Po Wang
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Dong-Wan Seo
- Department of Internal Medicine, Wonkwang University Hospital, Iksan, Korea
| | - Anthony Yuen-Bun Teoh
- Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Lawrence Khek-Yu Ho
- Division of Gastroenterology and Hepatology, University Medicine Cluster, National University Hospital, National University Health System, Singapore City, Singapore
| | - Mitsuhiro Kida
- Department of Gastroenterology, Kitasato University School of Medicine, Kanagawa, Japan
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Notohara K, Nakamura K. Tissue processing of endoscopic ultrasound-guided fine-needle aspiration specimens from solid pancreatic lesions. J Med Ultrason (2001) 2024; 51:261-274. [PMID: 38051462 DOI: 10.1007/s10396-023-01387-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 10/04/2023] [Indexed: 12/07/2023]
Abstract
Now that tissue cores can be obtained using fine-needle biopsy (FNB) needles, the ways tissues are handled for endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) are changing. Direct smear, touch smear of core tissues, and centrifugation have been used for cytological examinations, and liquid-based cytology (LBC), which allows immunostaining and genetic tests that use residual samples, is emerging as an alternative. We emphasize that liquid cytology (Cytospin™ cytology and LBC) is still important, because it enables the diagnosis of pancreatic ductal adenocarcinoma (PDAC) when cancerous cells are scarce in specimens. Cell blocks are being replaced by core tissues obtained via FNB needles. Recent reports indicate that rapid on-site evaluation (ROSE) is not necessary when FNB needles are used, and macroscopic on-site evaluation is used to evaluate specimen adequacy. Macroscopic findings of specimens are helpful in the diagnostic workup and for clarifying specimen-handling methods. In addition to the red strings and white cores observed in PDAC, mixed red and white strings, gray tissues, and gelatinous tissues are observed. Gray (necrotic) tissues and gelatinous (mucus) tissues are more suitable than histology for cell block or cytological processing. Tumor cells in neuroendocrine tumors (NETs) are numerous in red strings but cannot be observed macroscopically. ROSE might thus be necessary for lesions that may be NETs. Core tissues can be used for genetic tests, such as those used for KRAS mutations and comprehensive genomic profiling. Cytological materials, including slides and LBC specimens, can also be genetic test materials.
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Affiliation(s)
- Kenji Notohara
- Department of Anatomic Pathology, Kurashiki Central Hospital, 1-1-1 Miwa, Kurashiki, 710-8602, Japan.
| | - Kaori Nakamura
- Pathological Laboratory, Division of Medical Technology, Kurashiki Central Hospital, Kurashiki, Japan
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Hikichi T, Hashimoto M, Yanagita T, Kato T, Nakamura J. Endoscopic ultrasound-guided fine-needle aspiration for gastrointestinal subepithelial lesions. J Med Ultrason (2001) 2024; 51:195-207. [PMID: 37490244 DOI: 10.1007/s10396-023-01342-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 06/15/2023] [Indexed: 07/26/2023]
Abstract
Endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) is the first-choice procedure for obtaining pathological tissue samples from gastrointestinal (GI) subepithelial lesions (SELs). However, its diagnostic accuracy is lower than that for pancreatic masses owing to puncture difficulty and the need for immunostaining for definitive diagnosis. The advent of fine-needle biopsy needles, which have become well known in recent years, improves the diagnostic accuracy of EUS-FNA for GI SELs. The forward-viewing echoendoscope and rapid on-site evaluation (ROSE) have also helped to improve diagnostic accuracy. Furthermore, in facilities where ROSE is not available, endosonographers perform a macroscopic on-site evaluation. With these procedural innovations, EUS-FNA is now performed aggressively even for SELs smaller than 20 mm. The incidence of procedure-related adverse events such as bleeding and infection is low, and thus, EUS-FNA can be safely performed to diagnose SELs.
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Affiliation(s)
- Takuto Hikichi
- Department of Endoscopy, Fukushima Medical University Hospital, 1 Hikarigaoka, Fukushima, 960-1295, Japan.
| | - Minami Hashimoto
- Department of Endoscopy, Fukushima Medical University Hospital, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Takumi Yanagita
- Department of Endoscopy, Fukushima Medical University Hospital, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Tsunetaka Kato
- Department of Endoscopy, Fukushima Medical University Hospital, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Jun Nakamura
- Department of Endoscopy, Fukushima Medical University Hospital, 1 Hikarigaoka, Fukushima, 960-1295, Japan
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Iwashita T, Uemura S, Ryuichi T, Senju A, Iwata S, Ohashi Y, Shimizu M. Advances and efficacy in specimen handling for endoscopic ultrasound-guided fine needle aspiration and biopsy: A comprehensive review. DEN OPEN 2024; 4:e350. [PMID: 38495467 PMCID: PMC10941515 DOI: 10.1002/deo2.350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 02/19/2024] [Accepted: 02/23/2024] [Indexed: 03/19/2024]
Abstract
Endoscopic ultrasound-guided fine needle aspiration and biopsy have significantly evolved since they offer a minimally invasive approach for obtaining pathological specimens from lesions adjacent to or within the intestine. This paper reviews advancements in endoscopic ultrasound-guided fine needle aspiration and biopsy techniques and devices, emphasizing the importance of handling specimens for diagnostic accuracy. Innovations of fine needle biopsy needles with features like side holes and Franseen shapes have enhanced histological sampling capabilities. Techniques for specimen handling, including rapid on-site evaluation and macroscopic on-site evaluation, play pivotal roles in assessing sample adequacy, thereby influencing diagnostic outcomes. The utility of artificial intelligence in augmenting rapid on-site evaluation and macroscopic on-site evaluation, although still in experimental stages, presents a promising avenue for improving procedural efficiency and diagnostic precision. The choice of specimen handling technique is dependent on various factors including endoscopist preference, procedure objectives, and available resources, underscoring the need for a comprehensive understanding of each method's characteristics to optimize diagnostic efficacy and procedural safety.
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Affiliation(s)
- Takuji Iwashita
- First Department of Internal MedicineGifu University HospitalGifuJapan
| | - Shinya Uemura
- First Department of Internal MedicineGifu University HospitalGifuJapan
| | - Tezuka Ryuichi
- First Department of Internal MedicineGifu University HospitalGifuJapan
| | - Akihiko Senju
- First Department of Internal MedicineGifu University HospitalGifuJapan
| | - Shota Iwata
- First Department of Internal MedicineGifu University HospitalGifuJapan
| | - Yosuke Ohashi
- First Department of Internal MedicineGifu University HospitalGifuJapan
| | - Masahito Shimizu
- First Department of Internal MedicineGifu University HospitalGifuJapan
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Kanno A, Ikeda E, Ando K, Yokoyama K, Yamamoto H. The history of endoscopic ultrasound-guided fine-needle aspiration: development and progress. J Med Ultrason (2001) 2024; 51:187-194. [PMID: 38244112 DOI: 10.1007/s10396-023-01400-0] [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: 09/18/2023] [Accepted: 11/29/2023] [Indexed: 01/22/2024]
Abstract
Endoscopic ultrasonography (EUS) is an important diagnostic technique to accurately diagnose diseases originating from organs near the gastrointestinal tract. EUS-guided fine-needle aspiration (FNA) has improved the histopathological diagnosis. EUS-FNA has been further developed over a long period of 40 years. The history of the development of endosonographic scopes, ultrasonographic observation systems, puncture needles, and puncture methods will provide a springboard for future development.
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Affiliation(s)
- Atsushi Kanno
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan.
| | - Eriko Ikeda
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Kozue Ando
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Kensuke Yokoyama
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Hironori Yamamoto
- Department of Medicine, Division of Gastroenterology, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
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Okuwaki K, Watanabe M, Yoshida T, Tamaki A, Iwai T, Adachi K, Ishizaki J, Hanaoka T, Imaizumi H, Kida M, Kusano C. Efficacy of endoscopic ultrasound-guided tissue acquisition using stereo-microscopic on-site evaluation for possible comprehensive genome profile in patients with advanced pancreatic cancer. J Gastroenterol Hepatol 2024; 39:740-745. [PMID: 38229203 DOI: 10.1111/jgh.16478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 12/12/2023] [Accepted: 12/14/2023] [Indexed: 01/18/2024]
Abstract
BACKGROUND AND AIM Stereomicroscopic on-site evaluation (SOSE) is a rapid evaluation method for endoscopic ultrasound-guided tissue acquisition (EUS-TA) with a high diagnostic sensitivity when the stereomicroscopically visible white core (SVWC) cut-off value (≥ 11 mm) is met. We prospectively examined the association between SVWCs and the adequacy of tissue specimens, assuming subsequent comprehensive genome profiling (CGP). METHODS This study included 66 consecutive patients with suspected unresectable pancreatic cancer who underwent EUS-TA. The primary endpoint was the frequency of combined samples with ≥ 20% tumor cell content that met over twice the SVWC (T-SVWC) cut-off value, achieved through multiple punctures. The secondary endpoints were the number of punctures, the percentage of SVWC cut-off values, adverse events, the positive diagnosis rate, and the tissue section area. RESULTS The median number of EUS-TA punctures for suspected unresectable pancreatic cancer was 3 (range, 3-4); SVWC and T-SVWC cut-off values were obtained in 171/206 specimens and 65/66 patients, respectively. There were no EUS-TA-related adverse events. The positive diagnosis rate of EUS-TA was 95.5%. Among the 63 patients meeting the T-SVWC cut-off value in pathological diagnoses, the median tumor cell content was 40% (range, 5-80%), with 57 patients having tumor cell content ≥ 20%. The median tissue section area was 15 (range, 3-40) mm2. CONCLUSIONS When performing EUS-TA for unresectable pancreatic cancer with the intention of subsequent CGP, obtaining a high tumor cell content (≥ 20%) by assessing the T-SVWC cut-off value via SOSE may serve as a novel indicator for on-site estimation of CGP suitability for EUS-TA specimens.
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Affiliation(s)
- Kosuke Okuwaki
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
| | - Masafumi Watanabe
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
| | - Tsutomu Yoshida
- Division of Molecular Pathology, Department of Comprehensive Medicine, Research and Development Center for New Medical Frontiers, Kitasato University School of Medicine, Sagamihara, Japan
| | - Akihiro Tamaki
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
| | - Tomohisa Iwai
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
| | - Kai Adachi
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
| | - Junro Ishizaki
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
| | - Taro Hanaoka
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
| | - Hiroshi Imaizumi
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
| | - Mitsuhiro Kida
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
| | - Chika Kusano
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
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Nakatani S, Okuwaki K, Watanabe M, Imaizumi H, Iwai T, Matsumoto T, Hasegawa R, Masutani H, Kurosu T, Tamaki A, Ishizaki J, Ishizaki A, Kida M, Kusano C. Stereomicroscopic on-site evaluation in endoscopic ultrasound-guided tissue acquisition of upper gastrointestinal subepithelial lesions. Clin Endosc 2024; 57:89-95. [PMID: 37070203 PMCID: PMC10834295 DOI: 10.5946/ce.2022.288] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 11/14/2022] [Accepted: 11/14/2022] [Indexed: 04/19/2023] Open
Abstract
BACKGROUND/AIMS In stereomicroscopic sample isolation processing, the cutoff value (≥4 mm) of stereomicroscopically visible white cores indicates high diagnostic sensitivity. We aimed to evaluate endoscopic ultrasound-guided tissue acquisition (EUS-TA) using a simplified stereomicroscopic on-site evaluation of upper gastrointestinal subepithelial lesions (SELs). METHODS In this multicenter prospective trial, we performed EUS-TA using a 22-gauge Franseen needle in 34 participants with SELs derived from the upper gastrointestinal muscularis propria, requiring pathological diagnosis. The presence of stereomicroscopically visible white core (SVWC) in each specimen was assessed using stereomicroscopic on-site evaluation. The primary outcome was EUS-TA's diagnostic sensitivity with stereomicroscopic on-site evaluation based on the SVWC cutoff value (≥4 mm) for malignant upper gastrointestinal SELs. RESULTS The total number of punctures was 68; 61 specimens (89.7%) contained stereomicroscopically visible white cores ≥4 mm in size. The final diagnoses were gastrointestinal stromal tumor, leiomyoma, and schwannoma in 76.5%, 14.7%, and 8.8% of the cases, respectively. The sensitivity of EUS-TA with stereomicroscopic on-site evaluation based on the SVWC cutoff value for malignant SELs was 100%. The per-lesion accuracy of histological diagnosis reached the highest level (100%) at the second puncture. CONCLUSION Stereomicroscopic on-site evaluation showed high diagnostic sensitivity and could be a new method for diagnosing upper gastrointestinal SELs using EUS-TA.
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Affiliation(s)
- Seigo Nakatani
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
- Department of Gastroenterology, Isehara Kyodo Hospital, Isehara, Japan
| | - Kosuke Okuwaki
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
| | - Masafumi Watanabe
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
| | - Hiroshi Imaizumi
- Department of Gastroenterology, Japan Community Health Care Organization Sagamino Hospital, Sagamihara, Japan
| | - Tomohisa Iwai
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
| | - Takaaki Matsumoto
- Department of Gastroenterology, Isehara Kyodo Hospital, Isehara, Japan
| | - Rikiya Hasegawa
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
| | - Hironori Masutani
- Department of Gastroenterology, Japan Community Health Care Organization Sagamino Hospital, Sagamihara, Japan
| | - Takahiro Kurosu
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
| | - Akihiro Tamaki
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
| | - Junro Ishizaki
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
| | - Ayana Ishizaki
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
| | - Mitsuhiro Kida
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
| | - Chika Kusano
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Japan
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Cho YK. What method can we choose if rapid on-site evaluation is not available for the endoscopic ultrasound-guided tissue acquisition of upper gastrointestinal subepithelial lesions? Clin Endosc 2024; 57:53-55. [PMID: 38302249 PMCID: PMC10834289 DOI: 10.5946/ce.2023.299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 12/26/2023] [Accepted: 12/27/2023] [Indexed: 02/03/2024] Open
Affiliation(s)
- Yu Kyung Cho
- Division of Gastroenterology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
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11
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Nakamura K, Notohara K, Nishizaki R, Ishida E, Sato M, Kodera A, Itakura J, Mizuno M. Macroscopic qualitative evaluation of solid pancreatic lesion specimens from endoscopic ultrasound-guided fine needle aspiration/biopsies. Pancreatology 2023; 23:1028-1035. [PMID: 37839924 DOI: 10.1016/j.pan.2023.10.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 08/30/2023] [Accepted: 10/02/2023] [Indexed: 10/17/2023]
Abstract
OBJECTIVES To pathologically clarify the macroscopic features of endoscopic ultrasound-guided fine needle aspiration/biopsy (EUS-FNA/B) specimens in representative pancreatic diseases and establish tissue-handling standards based on the macroscopic findings. METHODS We gathered EUS-FNA/B specimens of cases at our institution with the final diagnoses of pancreatic ductal adenocarcinoma (PDAC, n = 172), neuroendocrine tumor (NET, n = 19), and chronic inflammatory lesion (CIL, n = 24) including autoimmune pancreatitis. We classified the specimens' macroscopic features in five categories (red strings, mixed-red-and-white strings, white cores, gray tissues, gelatinous tissues) and compared the specimens' features on cytological and histological slides. RESULTS All five macroscopic categories were observed in variable combinations in the PDACs; red strings and white cores predominated in the NETs and CILs. White cores represented neoplastic (PDAC, NET) or lesion (CIL) tissues. Mixed-red-and-white strings were unique to PDACs and contained cancerous cells. Neoplastic cells were numerous in red strings in NETs but not the other groups. Gray and gelatinous tissues represented necrosis and mucin, respectively, and the former were almost exclusively observed in PDACs. Red strings, mixed-red-and-white strings, and white cores were suitable for histological examination, whereas gray and gelatinous tissues were suitable for cytological examination. The white cores, mixed-red-and-white strings, and gelatinous tissues may be composed of non-neoplastic tissues such as contaminated gastrointestinal epithelium. In seven PDACs, although white cores were obtained, a histological diagnosis was not established. CONCLUSIONS Macroscopic evaluations of EUS-FNA/B can enable the identification of specimen components and a possible diagnosis. They also contribute to the selection of the optimal tissue-handling methods.
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Affiliation(s)
- Kaori Nakamura
- Pathological Laboratory, Division of Medical Technology, Kurashiki Central Hospital, Kurashiki, Japan
| | - Kenji Notohara
- Department of Anatomic Pathology, Kurashiki Central Hospital, Kurashiki, Japan.
| | - Ryoji Nishizaki
- Pathological Laboratory, Division of Medical Technology, Kurashiki Central Hospital, Kurashiki, Japan
| | - Etsuji Ishida
- Department of Gastroenterology and Hepatology, Kurashiki Central Hospital, Kurashiki, Japan
| | - Midori Sato
- Department of Anatomic Pathology, Kurashiki Central Hospital, Kurashiki, Japan
| | - Akemi Kodera
- Pathological Laboratory, Division of Medical Technology, Kurashiki Central Hospital, Kurashiki, Japan
| | - Junya Itakura
- Department of Anatomic Pathology, Kurashiki Central Hospital, Kurashiki, Japan
| | - Motowo Mizuno
- Department of Gastroenterology and Hepatology, Kurashiki Central Hospital, Kurashiki, Japan
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12
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Guan C, Wu M, Ye J, Liu Z, Mao Z, Lu C, Zhang J. Macroscopic on‑site quality evaluation of biopsy specimens to improve the diagnostic accuracy of endoscopic ultrasound‑guided fine needle aspiration using a 22‑gauge needle for solid lesions: A single‑center retrospective study. Exp Ther Med 2023; 26:338. [PMID: 37383379 PMCID: PMC10294598 DOI: 10.3892/etm.2023.12037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 05/03/2023] [Indexed: 06/30/2023] Open
Abstract
The present study aimed to evaluate the clinical value of macroscopic on-site evaluation (MOSE) of solid masses by endoscopic ultrasound (EUS)-guided fine needle aspiration (FNA) using a standard 22-gauge needle and to explore the cut-off length of macroscopic visible core (MVC) required to obtain an accurate histopathological diagnosis. In total, 119 patients who satisfied the inclusion and exclusion criteria and underwent EUS-FNA were divided into conventional FNA and FNA combined with MOSE groups. In the MOSE group, the presence of MVC was examined and its total length measured, after which the pathological results of FNA were compared with the final diagnosis. The diagnostic sensitivity, specificity, accuracy, positive predictive value (PPV) and negative predictive value (NPV) of FNA in the two groups were calculated and the effect of MOSE on the FNA result was analyzed. The MOSE group had a higher diagnostic sensitivity (75.0% vs. 89.8%; P=0.038) and accuracy (74.5% vs. 90.6%; P=0.026). MVC was observed in 98.4% (63/64) of patients in the MOSE group. The median length of MVC was 15 mm. The optimal cut-off length of MVC for obtaining an accurate histological diagnosis was 13 mm, with a sensitivity of 90.2%. No statistically significant significance was observed in the specificity, PPV and NPV between the groups. Thus, MOSE helps to improve the diagnostic ability of FNA for solid masses and may be a useful alternative to assess the adequacy of puncture specimens in units where rapid on-site evaluation cannot be performed.
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Affiliation(s)
- Chengqi Guan
- Department of Gastroenterology, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
| | - Mengyu Wu
- Department of Gastroenterology, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
- Department of Gastroenterology, Maanshan People's Hospital, Manashan, Anhui 243000, P.R. China
| | - Jingxin Ye
- Department of Gastroenterology, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
| | - Zhaoxiu Liu
- Department of Gastroenterology, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
| | - Zhenbiao Mao
- Department of Gastroenterology, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
| | - Cuihua Lu
- Department of Gastroenterology, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
| | - Jianfeng Zhang
- Department of Gastroenterology, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
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13
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Okuwaki K, Imaizumi H, Kida M, Masutani H, Watanabe M, Adachi K, Tadehara M, Tamaki A, Iwai T, Yamauchi H, Hasegawa R, Kaneko T, Kurosu T, Koizumi W. New image‐processing technology for endoscopic ultrasound‐guided fine‐needle aspiration biopsy specimen evaluation in patients with pancreatic cancer. DEN OPEN 2022; 2:e21. [PMID: 35310710 PMCID: PMC8828228 DOI: 10.1002/deo2.21] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 04/15/2021] [Accepted: 04/16/2021] [Indexed: 12/30/2022]
Abstract
Objectives Methods Results Conclusion
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Affiliation(s)
- Kosuke Okuwaki
- Department of Gastroenterology Kitasato University School of Medicine Kanagawa Japan
| | - Hiroshi Imaizumi
- Department of Gastroenterology Kitasato University School of Medicine Kanagawa Japan
| | - Mitsuhiro Kida
- Department of Gastroenterology Kitasato University School of Medicine Kanagawa Japan
| | - Hironori Masutani
- Department of Gastroenterology Kitasato University School of Medicine Kanagawa Japan
| | - Masafumi Watanabe
- Department of Gastroenterology Kitasato University School of Medicine Kanagawa Japan
| | - Kai Adachi
- Department of Gastroenterology Kitasato University School of Medicine Kanagawa Japan
| | - Masayoshi Tadehara
- Department of Gastroenterology Kitasato University School of Medicine Kanagawa Japan
| | - Akihiro Tamaki
- Department of Gastroenterology Kitasato University School of Medicine Kanagawa Japan
| | - Tomohisa Iwai
- Department of Gastroenterology Kitasato University School of Medicine Kanagawa Japan
| | - Hiroshi Yamauchi
- Department of Gastroenterology Kitasato University School of Medicine Kanagawa Japan
| | - Rikiya Hasegawa
- Department of Gastroenterology Kitasato University School of Medicine Kanagawa Japan
| | - Toru Kaneko
- Department of Gastroenterology Kitasato University School of Medicine Kanagawa Japan
| | - Takahiro Kurosu
- Department of Gastroenterology Kitasato University School of Medicine Kanagawa Japan
| | - Wasaburo Koizumi
- Department of Gastroenterology Kitasato University School of Medicine Kanagawa Japan
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14
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Okuwaki K, Imaizumi H, Kida M, Masutani H, Iwai T, Watanabe M, Adachi K, Tadehara M, Hasegawa R, Nakatani S, Kurosu T, Tamaki A, Koizumi W. Usefulness of the automated multiband imaging system for EUS-FNA biopsy specimen evaluation in patients with upper gastrointestinal subepithelial lesions. Endosc Ultrasound 2022:340251. [PMID: 35313420 PMCID: PMC9526098 DOI: 10.4103/eus-d-21-00143] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Background and Objectives Sample isolation processing by stereomicroscopy (SIPS) was recently introduced as an alternative to rapid on-site cytologic evaluation and showed high accuracy for use in pathologic diagnoses. SIPS is a useful, but slightly complicated procedure; therefore, a new, more straightforward method for the objective estimation of the core tissue amount required during the sampling is desirable. We evaluated the usefulness of the automated multiband imaging system (AMUS) for calculating whitish core amounts in EUS-FNA biopsy (EUS-FNAB) samples from patients with subepithelial lesions (SELs). Methods Four EUS-FNAB specimens per patient were obtained from 20 patients with upper gastrointestinal SELs. The correlation between the whitish core amount calculated by AMUS, length of the manually measured whitish cores (stereomicroscopically visible white core [SVWC]), and sample suitability for pathologic evaluation were analyzed. Results We identified 13 patients with gastrointestinal stromal tumors, five with leiomyomas, one with a schwannoma, and one with an ectopic pancreas. The histological diagnostic accuracy was 100%, median SVWC length was 9 mm, and median whitish core area, calculated using AMUS, was 10 mm2. SVWC length correlated with whitish core amount (ρ = 0.81, P < 0.01) and adequacy score (ρ = 0.54, P < 0.01). Whitish core amount correlated with adequacy score (ρ = 0.54, P < 0.01). The area under the receiver-operating characteristic curve calculated for whitish core amount with respect to the histological diagnosis was 0.83 (P < 0.01; cutoff ≥4 mm2, sensitivity 98.4%). Conclusions AMUS, a simple on-site verification instrument, is an alternative to SIPS for determining the appropriate SEL tissue sampling quantity with high diagnostic accuracy.
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Affiliation(s)
- Kosuke Okuwaki
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Hiroshi Imaizumi
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Mitsuhiro Kida
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Hironori Masutani
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Tomohisa Iwai
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Masafumi Watanabe
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Kai Adachi
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Masayoshi Tadehara
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Rikiya Hasegawa
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Seigo Nakatani
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Takahiro Kurosu
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Akihiro Tamaki
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Wasaburo Koizumi
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
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15
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Watanabe M, Okuwaki K, Kida M, Imaizumi H, Matsumoto T, Iwai T, Hasegawa R, Masutani H, Kurosu T, Minato N, Tamaki A, Ishizaki J, Kusano C. Multicenter prospective study of the efficacy of stereomicroscopic on-site evaluation in endoscopic ultrasound-guided tissue acquisition in patients with pancreatic cancer. Pancreatology 2022; 22:311-316. [PMID: 34969602 DOI: 10.1016/j.pan.2021.12.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 12/17/2021] [Accepted: 12/21/2021] [Indexed: 12/11/2022]
Abstract
OBJECTIVE In sample isolation processing by stereomicroscopy (SIPS), a technique used to assess the quality of specimens collected during endoscopic ultrasound (EUS)-guided tissue acquisition (EUS-TA), the cutoff value of stereomicroscopically visible white core (SVWC) (≥11 mm) indicates high diagnostic sensitivity. However, the procedure of SIPS is complicated and time-consuming. Therefore, we devised the stereomicroscopic on-site evaluation (SOSE), a new rapid assessment method that is simpler than SIPS and only determines if the SVWC cutoff value is attained. We aimed to examine the usefulness of SOSE in a multicenter, prospective setting. METHODS Seventy patients from multiple institutions with solid pancreatic masses suspected to be pancreatic cancer were included. EUS-TA was performed using a 22-gauge Franseen needle. SVWCs were measured on-site using stereomicroscopy. The primary outcome was the sensitivity of SVWC cutoff value in EUS-TA with SOSE. RESULTS The total number of punctures was 214 and SOSE was performed on 150 punctures. The SVWC cutoff value collection rate was 100% per lesion, with 80% in the first pass, 79% in the second pass, and 78% per puncture in all passes. The median time taken to determine the SVWC cutoff value for SOSE was 47 s. The sensitivity of the SVWC cutoff value was 93.2% for histology and 96.6% for cytology + histology. The per-lesion accuracy of pathological diagnosis reached the highest level (98.6%) at the second puncture. CONCLUSIONS SOSE showed high diagnostic sensitivity and may be a new rapid assessment method for the diagnosis of malignant pancreatic cancer using EUS-TA.
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Affiliation(s)
- Masafumi Watanabe
- Department of Gastroenterology, Kitasato University School of Medicine, 1-15-1 Kitasato, Minami, Sagamihara, Kanagawa, 252-0374, Japan
| | - Kosuke Okuwaki
- Department of Gastroenterology, Kitasato University School of Medicine, 1-15-1 Kitasato, Minami, Sagamihara, Kanagawa, 252-0374, Japan.
| | - Mitsuhiro Kida
- Department of Gastroenterology, Kitasato University School of Medicine, 1-15-1 Kitasato, Minami, Sagamihara, Kanagawa, 252-0374, Japan
| | - Hiroshi Imaizumi
- Department of Gastroenterology, Japan Community Health Care Organization Sagamino Hospital, 1-2-30 Huchinobe, Chuou, Sagamihara, Kanagawa, 252-0206, Japan
| | - Takaaki Matsumoto
- Department of Gastroenterology, Isehara Kyodo Hospital, 345 Tanaka, Isehara, Kanagawa, 259-1187, Japan
| | - Tomohisa Iwai
- Department of Gastroenterology, Kitasato University School of Medicine, 1-15-1 Kitasato, Minami, Sagamihara, Kanagawa, 252-0374, Japan
| | - Rikiya Hasegawa
- Department of Gastroenterology, Kitasato University School of Medicine, 1-15-1 Kitasato, Minami, Sagamihara, Kanagawa, 252-0374, Japan
| | - Hironori Masutani
- Department of Gastroenterology, Kitasato University School of Medicine, 1-15-1 Kitasato, Minami, Sagamihara, Kanagawa, 252-0374, Japan; Department of Gastroenterology, Japan Community Health Care Organization Sagamino Hospital, 1-2-30 Huchinobe, Chuou, Sagamihara, Kanagawa, 252-0206, Japan
| | - Takahiro Kurosu
- Department of Gastroenterology, Kitasato University School of Medicine, 1-15-1 Kitasato, Minami, Sagamihara, Kanagawa, 252-0374, Japan
| | - Naoki Minato
- Department of Gastroenterology, Isehara Kyodo Hospital, 345 Tanaka, Isehara, Kanagawa, 259-1187, Japan
| | - Akihiro Tamaki
- Department of Gastroenterology, Kitasato University School of Medicine, 1-15-1 Kitasato, Minami, Sagamihara, Kanagawa, 252-0374, Japan; Department of Gastroenterology, Isehara Kyodo Hospital, 345 Tanaka, Isehara, Kanagawa, 259-1187, Japan
| | - Junro Ishizaki
- Department of Gastroenterology, Japan Community Health Care Organization Sagamino Hospital, 1-2-30 Huchinobe, Chuou, Sagamihara, Kanagawa, 252-0206, Japan
| | - Chika Kusano
- Department of Gastroenterology, Kitasato University School of Medicine, 1-15-1 Kitasato, Minami, Sagamihara, Kanagawa, 252-0374, Japan
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16
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Kanno Y. The Need for Histological Preparation of Endoscopic Ultrasound-guided Fine-needle Aspiration Specimens to Diagnose Rare Pancreatic Etiologies. Intern Med 2021; 60:1327-1328. [PMID: 33250469 PMCID: PMC8170241 DOI: 10.2169/internalmedicine.6460-20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Yoshihide Kanno
- Department of Gastroenterology, Sendai City Medical Center, Japan
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17
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Hanaoka T, Okuwaki K, Imaizumi H, Imawari Y, Iwai T, Yamauchi H, Hasegawa R, Adachi K, Tadehara M, Kurosu T, Watanabe M, Tamaki A, Kida M, Koizumi W. Pancreatic Schwannoma Diagnosed by Endoscopic Ultrasound-guided Fine-needle Aspiration. Intern Med 2021; 60:1389-1395. [PMID: 33250465 PMCID: PMC8170256 DOI: 10.2169/internalmedicine.6129-20] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
A schwannoma is a tumor originating from Schwann cells. It is occasionally observed in the abdominal viscera in the form of a submucosal tumor derived from the gastric or duodenal muscularis propria. To date, only a few studies have reported on pancreatic schwannomas. Furthermore, very few patients are preoperatively diagnosed with pancreatic schwannoma because of the lack of established imaging characteristics distinguishing this type of schwannoma from other conditions. We herein report the first English publication of pancreatic schwannoma in which surgery was avoided because a pathological diagnosis was made solely on the basis of endoscopic ultrasound-guided fine-needle aspiration findings.
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Affiliation(s)
- Taro Hanaoka
- Department of Gastroenterology, Kitasato University School of Medicine, Japan
| | - Kosuke Okuwaki
- Department of Gastroenterology, Kitasato University School of Medicine, Japan
| | - Hiroshi Imaizumi
- Department of Gastroenterology, Kitasato University School of Medicine, Japan
- Department of Gastroenterology, JCHO Sagamino Hospital, Japan
| | - Yusuke Imawari
- Department of Gastroenterology, Kitasato University School of Medicine, Japan
- Department of Gastroenterology, JCHO Sagamino Hospital, Japan
| | - Tomohisa Iwai
- Department of Gastroenterology, Kitasato University School of Medicine, Japan
| | - Hiroshi Yamauchi
- Department of Gastroenterology, Kitasato University School of Medicine, Japan
| | - Rikiya Hasegawa
- Department of Gastroenterology, Kitasato University School of Medicine, Japan
| | - Kai Adachi
- Department of Gastroenterology, Kitasato University School of Medicine, Japan
| | - Masayoshi Tadehara
- Department of Gastroenterology, Kitasato University School of Medicine, Japan
| | - Takahiro Kurosu
- Department of Gastroenterology, Kitasato University School of Medicine, Japan
| | - Masafumi Watanabe
- Department of Gastroenterology, Kitasato University School of Medicine, Japan
| | - Akihiro Tamaki
- Department of Gastroenterology, Kitasato University School of Medicine, Japan
| | - Mitsuhiro Kida
- Department of Gastroenterology, Kitasato University School of Medicine, Japan
| | - Wasaburo Koizumi
- Department of Gastroenterology, Kitasato University School of Medicine, Japan
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18
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Watanabe M, Okuwaki K, Kida M, Tadehara M, Adachi K, Masutani H, Tamaki A, Imaizumi H, Iwai T, Yamauchi H, Kaneko T, Hasegawa R, Kurosu T, Koizumi W. Histopathological comparison of aspiration and biopsy needles in endoscopic ultrasound-guided tissue acquisition in patients with subepithelial lesions. Diagn Cytopathol 2021; 49:856-863. [PMID: 33885229 DOI: 10.1002/dc.24757] [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: 12/24/2020] [Revised: 04/12/2021] [Accepted: 04/13/2021] [Indexed: 11/05/2022]
Abstract
BACKGROUND Information on whether a fine-needle biopsy (FNB) needle can improve histopathological specimen quality or the amount of core tissue collected in the diagnosis of subepithelial lesions (SELs) remains insufficient. In this study, we aimed to compare the procedure outcomes and adequacy of histopathological specimens of fine-needle aspiration (FNA) and FNB needles in endoscopic ultrasound-guided tissue acquisition (EUS-TA) using sample isolation processing by stereomicroscopy (SIPS) in patients with SELs. METHODS We performed a retrospective comparison of SEL cases registered in two previously conducted prospective studies. Of 61 cases, we identified 56 cases of SELs that involved the muscularis propria layer. Of these, 27 patients who underwent EUS-TA using a 22-gauge FNA needle between July 2016 and December 2017, and 29 patients who underwent the procedure using a 22-gauge FNB needle between March 2018 and January 2019 were included in the FNA and FNB group, respectively. RESULTS Patient background characteristics did not differ between the groups. The technical success rate was 100% in both groups. The median adequacy score was significantly higher in the FNB group than in the FNA group (P < .01). The histological diagnosis showed no significant difference in the accuracy rate between the groups. CONCLUSIONS In EUS-TA using the SIPS procedure to target SELs derived from the muscularis propria layer, FNB needles collect more core tissues and significantly improve histopathological specimen quality compared with FNA needles. When combined with SIPS, a high tissue diagnosis rate may be obtained regardless of the type of puncture needle used.
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Affiliation(s)
- Masafumi Watanabe
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Kosuke Okuwaki
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Mitsuhiro Kida
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Masayoshi Tadehara
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Kai Adachi
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Hironori Masutani
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Akihiro Tamaki
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Hiroshi Imaizumi
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Tomohisa Iwai
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Hiroshi Yamauchi
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Toru Kaneko
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Rikiya Hasegawa
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Takahiro Kurosu
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
| | - Wasaburo Koizumi
- Department of Gastroenterology, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan
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19
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Zhou W, Li SY, Li J, Kong XY, Zhao B, Ji YF, Jin ZD, Wang KX. Comparison of full-field optical coherence tomography imaging for pancreatic tissue sample obtained by EUS-fine-needle biopsy and conventional histological examination: A study protocol for a prospective trial. Endosc Ultrasound 2020; 9:380-384. [PMID: 32952130 PMCID: PMC7811711 DOI: 10.4103/eus.eus_27_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
For a definitive diagnosis of fine-needle aspiration (FNA)/biopsy, one of the reliable techniques to determine the adequacy and accuracy rapid on-site evaluation (ROSE) of cytological samples is preferable. Because of the lack of trained pathologists, alternatives have to be explored. This study is primarily conducted to determine the diagnostic sensitivity and specificity of full-field optical coherence tomography (FF-OCT) and secondarily to evaluate the possibility of FF-OCT differentiating different types of pancreatic diseases. The diagnostic coherence of FF-OCT by a trained assistant (endoscopist) and trained pathologist is also compared. This is a single-center, prospective, observation trial. Eighty patients would be enrolled in the study. The tissue samples acquired by endoscopic ultrasound fine-needle biopsy (EUS-FNB) would be imaged by the FF-OCT system, interpreted by a trained endoscopist and a pathologist. The results of the image interpretation would be verified with histological findings. This study determines the diagnostic capability of FF-OCT as a ROSE technique while performing EUS-FNB, and whether endoscopists can implement the assessment.
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Affiliation(s)
- Wei Zhou
- Department of Gastroenterology, Changhai Hospital, Second Military Medical University/Naval Medical University, Shanghai, China
| | - Shi-Yu Li
- Department of Gastroenterology, Changhai Hospital, Second Military Medical University/Naval Medical University, Shanghai, China
| | - Jun Li
- Department of Gastroenterology, Changhai Hospital, Second Military Medical University/Naval Medical University, Shanghai, China
| | - Xiang-Yu Kong
- Department of Gastroenterology, Changhai Hospital, Second Military Medical University/Naval Medical University, Shanghai, China
| | - Bo Zhao
- Department of Gastroenterology, Changhai Hospital, Second Military Medical University/Naval Medical University, Shanghai, China
| | - Yi-Fei Ji
- Department of Gastroenterology, Affiliated Hospital of Nantong University, Nantong University, Nantong, Jiangsu, China
| | - Zhen-Dong Jin
- Department of Gastroenterology, Changhai Hospital, Second Military Medical University/Naval Medical University, Shanghai, China
| | - Kai-Xuan Wang
- Department of Gastroenterology, Changhai Hospital, Second Military Medical University/Naval Medical University, Shanghai, China
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