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Gonda M, Sarita MA, Sakai A, Kodama Y. Successful cannulation of a difficult pancreatic duct using the uneven method. VIDEOGIE : AN OFFICIAL VIDEO JOURNAL OF THE AMERICAN SOCIETY FOR GASTROINTESTINAL ENDOSCOPY 2024; 9:237-240. [PMID: 38766399 PMCID: PMC11099198 DOI: 10.1016/j.vgie.2024.02.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
Video 1Pancreatic cannulation via the uneven method.
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Affiliation(s)
- Masanori Gonda
- Division of Gastroenterology, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe Hyogo, Japan
| | - Mabel Angela Sarita
- Division of Gastroenterology, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe Hyogo, Japan
- Institute of Digestive and Liver Diseases, St. Luke's Medical Center, Quezon City, Philippines
| | - Arata Sakai
- Division of Gastroenterology, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe Hyogo, Japan
| | - Yuzo Kodama
- Division of Gastroenterology, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe Hyogo, Japan
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2
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Takigawa Y, Matsui J, Igarashi T, Uchiyama M, Sasaki A. Investigating the early diagnosis of pancreatic cancer by surveillance of patients with "K-sign" of the pancreas by computed tomography: A prospective study. JOURNAL OF HEPATO-BILIARY-PANCREATIC SCIENCES 2024; 31:193-202. [PMID: 38235505 DOI: 10.1002/jhbp.1411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 11/05/2023] [Accepted: 11/19/2023] [Indexed: 01/19/2024]
Abstract
BACKGROUND We previously conducted a retrospective study investigating pancreatic morphological abnormalities that lead to early diagnosis of pancreatic cancer (PC) using computed tomography (CT). We reviewed 41 of 308 PC patients between 2011 and 2017 who had previously undergone CT to look for morphological changes leading to cancer development. In 24 patients (58.5%), a K-shaped constriction of the pancreas ("K-sign") was observed before the appearance of cancer. This study aimed to investigate whether an early PC diagnosis is possible by prospective CT follow-up of patients with the K-sign. METHODS We investigated PC development through prospective surveillance of patients exhibiting K-signs identified on CT. RESULTS Of approximately 87 000 CT scans performed between April 2019 and August 2022, the K-sign was observed in 54 patients. A total of 30 patients provided informed consent and were subsequently monitored using CT. Five patients (16.7%) were diagnosed with PC and underwent surgery after 3-24 months follow-up. Pathologically, four of five patients (80%) were diagnosed with early-stage pancreatic cancer (stage 0-IA). All patients exhibited defects in acinar structure, fibrous tissue, fat replacement, and inflammatory cells, suggesting their potential involvement in PC development. CONCLUSION The detection and surveillance of the K-sign may be helpful for early PC diagnosis.
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Affiliation(s)
- Yutaka Takigawa
- Department of Surgery, Tokyo Dental College Ichikawa General Hospital, Chiba, Japan
| | - Junichi Matsui
- Department of Surgery, Tokyo Dental College Ichikawa General Hospital, Chiba, Japan
| | - Takao Igarashi
- Department of Radiology, Tokyo Dental College Ichikawa General Hospital, Chiba, Japan
| | - Masateru Uchiyama
- Department of Cardiovascular Surgery, Teikyo University, Tokyo, Japan
| | - Aya Sasaki
- Department of Pathology and Laboratory Medicine, Tokyo Dental College Ichikawa General Hospital, Chiba, Japan
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Mandai K, Inoue T, Yoshimoto T, Ogawa T, Uno K, Yasuda K. Evaluation of a Novel Easy Loop-Forming Guidewire to Reduce Post-Endoscopic Retrograde Cholangiopancreatography Pancreatitis for Serial Pancreatic Juice Aspiration Cytologic Examination: A Propensity Score Matching Analysis. Pancreas 2024; 53:e49-e54. [PMID: 38019197 DOI: 10.1097/mpa.0000000000002268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2023]
Abstract
OBJECTIVE This study aimed to investigate whether a novel, easy loop-forming guidewire could reduce post-endoscopic retrograde cholangiopancreatography pancreatitis (PEP) in patients undergoing endoscopic nasopancreatic drainage tube placement for serial pancreatic juice aspiration cytologic examination (SPACE). METHODS We evaluated patients with suspected pancreatic cancer who underwent SPACE at our institution between January 2015 and April 2023 retrospectively. The patients were divided into 2 groups based on the type of guidewire used, namely, easy loop-forming and control groups. Propensity score matching was used to compare the incidence of PEP between the groups. RESULTS We included 101 patients, with 51 and 50 in the easy loop-forming and control groups, respectively. After propensity score matching, 29 pairs of patients were selected from each group. Intraductal ultrasonography of the pancreas was performed more frequently in the easy loop-forming group than in the control group (27.6% vs 0%; P = 0.004); however, PEP incidence was significantly lower in the easy loop-forming group than in the control group (3.4% vs 27.6%; odds ratio, 0.097; 95% confidence interval, 0.002-0.82; P = 0.025). CONCLUSIONS The use of the novel easy loop-forming guidewire decreased PEP occurrence in patients who underwent endoscopic nasopancreatic drainage tube placement for SPACE.
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Affiliation(s)
- Koichiro Mandai
- From the Department of Gastroenterology, Kyoto Second Red Cross Hospital, Kyoto, Japan
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4
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Nakamura S, Ishii Y, Serikawa M, Hanada K, Eguchi N, Sasaki T, Fujimoto Y, Yamaguchi A, Sugiyama S, Noma B, Kamigaki M, Minami T, Okazaki A, Yukutake M, Mouri T, Tatsukawa Y, Ikemoto J, Arihiro K, Oka S. Diagnostic Ability and Safety of Repeated Pancreatic Juice Cytology Using an Endoscopic Nasopancreatic Drainage Catheter for Pancreatic Ductal Adenocarcinoma: A Multicenter Prospective Study. Diagnostics (Basel) 2023; 13:2696. [PMID: 37627955 PMCID: PMC10453209 DOI: 10.3390/diagnostics13162696] [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: 06/29/2023] [Revised: 08/06/2023] [Accepted: 08/15/2023] [Indexed: 08/27/2023] Open
Abstract
Pathological examination is essential for the diagnosis and treatment of pancreatic ductal adenocarcinoma (PDAC). Moreover, a reliable pathological diagnosis is extremely important for improving prognosis, especially in early-stage PDAC. This study prospectively evaluated the usefulness of repeated pancreatic juice cytology (PJC) using an endoscopic nasopancreatic drainage (ENPD) catheter for the diagnosis of PDAC. We enrolled 82 patients suspected of having resectable PDAC, based on imaging studies, and judged the necessity for cytology. The diagnostic yield of up to six repeated PJCs and the incidence of complications, such as pancreatitis, was evaluated. A total of 60 patients were diagnosed with PDAC. The overall sensitivity and specificity were 46.7% and 95.5%, respectively. The cumulative positivity rate increased with the number of sampling sessions, reaching 58.3% in the sixth session. The sensitivity was significantly higher in the pancreatic head than in the pancreatic tail (p = 0.043). Additionally, it was 100% in four patients with a tumor size ≤10 mm. Pancreatitis occurred in six patients (7.3%), all of whom were treated conservatively. In the diagnosis of PDAC, repeated PJC using an ENPD catheter revealed a cumulative effect of sensitivity up to six times and an excellent diagnostic yield for small PDAC.
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Affiliation(s)
- Shinya Nakamura
- Department of Gastroenterology, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima 734-8551, Japan; (S.N.); (M.S.); (Y.T.); (J.I.); (S.O.)
| | - Yasutaka Ishii
- Department of Gastroenterology, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima 734-8551, Japan; (S.N.); (M.S.); (Y.T.); (J.I.); (S.O.)
| | - Masahiro Serikawa
- Department of Gastroenterology, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima 734-8551, Japan; (S.N.); (M.S.); (Y.T.); (J.I.); (S.O.)
| | - Keiji Hanada
- Department of Gastroenterology, Onomichi General Hospital, Onomichi 722-8508, Japan;
| | - Noriaki Eguchi
- Department of Gastroenterology, Hiroshima Memorial Hospital, Hiroshima 730-0802, Japan;
| | - Tamito Sasaki
- Department of Gastroenterology, Hiroshima Prefectural Hospital, Hiroshima 734-8530, Japan;
| | - Yoshifumi Fujimoto
- Department of Gastroenterology, Hiroshima General Hospital, Hatsukaichi 738-8503, Japan;
| | - Atsushi Yamaguchi
- Department of Gastroenterology, National Hospital Organization Kure Medical Center and Chugoku Cancer Center, Kure 737-0023, Japan;
| | - Shinichiro Sugiyama
- Department of Gastroenterology, Saiseikai Hiroshima Hospital, Aki 731-4311, Japan;
| | - Bunjiro Noma
- Department of Gastroenterology, Kure Kyosai Hospital, Kure 737-8508, Japan;
| | - Michihiro Kamigaki
- Department of Gastroenterology, Saiseikai Kure Hospital, Kure 737-0921, Japan;
| | - Tomoyuki Minami
- Department of Gastroenterology, Hiroshima Red Cross & Atomic-Bomb Survivors Hospital, Hiroshima 730-8619, Japan;
| | - Akihito Okazaki
- Department of Gastroenterology, National Hospital Organization Higashihiroshima Medical Center, Higashihiroshima 739-0041, Japan;
| | - Masanobu Yukutake
- Department of Gastroenterology, Hiroshima City North Medical Center Asa Citizens Hospital, Hiroshima 731-0293, Japan;
| | - Teruo Mouri
- Department of Gastroenterology, Chugoku Rosai Hospital, Kure 737-0193, Japan;
| | - Yumiko Tatsukawa
- Department of Gastroenterology, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima 734-8551, Japan; (S.N.); (M.S.); (Y.T.); (J.I.); (S.O.)
| | - Juri Ikemoto
- Department of Gastroenterology, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima 734-8551, Japan; (S.N.); (M.S.); (Y.T.); (J.I.); (S.O.)
| | - Koji Arihiro
- Department of Anatomical Pathology, Hiroshima University Hospital, Hiroshima 734-8551, Japan;
| | - Shiro Oka
- Department of Gastroenterology, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima 734-8551, Japan; (S.N.); (M.S.); (Y.T.); (J.I.); (S.O.)
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Kikuyama M. A Novel Diagnostic Imaging Method for the Early Detection of Pancreatic Cancer. Diagnostics (Basel) 2023; 13:2080. [PMID: 37370975 DOI: 10.3390/diagnostics13122080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 06/13/2023] [Accepted: 06/14/2023] [Indexed: 06/29/2023] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) has an extremely poor prognosis, with a survival rate of less than 10% [...].
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Affiliation(s)
- Masataka Kikuyama
- Department of Gastroenterology, Tokyo Women's Medical University, 8-1 Shinjuku-ku, Tokyo 162-8666, Japan
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Koiwai A, Hirota M, Matsuura T, Itoh T, Kin R, Katayama T, Endo K, Takasu A, Kogure T, Murakami K, Satoh K. Diffuse pancreatic parenchymal atrophy, an imaging finding predictive of the development of pancreatic ductal adenocarcinoma: A case-control study. JGH Open 2023; 7:445-452. [PMID: 37359111 PMCID: PMC10290266 DOI: 10.1002/jgh3.12930] [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: 10/27/2022] [Revised: 05/21/2023] [Accepted: 05/22/2023] [Indexed: 06/28/2023]
Abstract
Background and Aim Pancreatic ductal adenocarcinoma (PDAC) is a lethal cancer, partly because its early detection is difficult. This study aimed to identify computed tomography (CT) findings associated with PDAC prior to diagnosis. Methods Past CT images were retrospectively collected from the PDAC group (n = 54) and the control group (n = 90). The following imaging findings were compared: pancreatic mass, main pancreatic duct (MPD) dilatation with or without cutoff, cyst, chronic pancreatitis with calcification, partial parenchymal atrophy (PPA), and diffuse parenchymal atrophy (DPA). In the PDAC group, CT findings were examined during the pre-diagnostic period and 6-36 months and 36-60 months before diagnosis. Multivariate analyses were performed using logistic regression. Results MPD dilatation with cutoff (P < 0.0001) and PPA (P = 0.023) were identified as significant imaging findings 6-36 months before diagnosis. DPA was identified as a novel imaging finding at 6-36 months (P = 0.003) and 36-60 months (P = 0.009) before diagnosis. Conclusion DPA, MPD dilatation with cutoff, and PPA were identified as imaging findings associated with pre-diagnostic PDAC.
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Affiliation(s)
- Akinobu Koiwai
- Division of GastroenterologyTohoku Medical and Pharmaceutical UniversitySendaiJapan
| | - Morihisa Hirota
- Division of GastroenterologyTohoku Medical and Pharmaceutical UniversitySendaiJapan
| | - Tomonori Matsuura
- Division of RadiologyTohoku Medical and Pharmaceutical UniversitySendaiJapan
| | - Takehito Itoh
- Division of GastroenterologyTohoku Medical and Pharmaceutical UniversitySendaiJapan
| | - Ryo Kin
- Division of GastroenterologyTohoku Medical and Pharmaceutical UniversitySendaiJapan
| | - Tomofumi Katayama
- Division of GastroenterologyTohoku Medical and Pharmaceutical UniversitySendaiJapan
| | - Katsuya Endo
- Division of GastroenterologyTohoku Medical and Pharmaceutical UniversitySendaiJapan
| | - Atsuko Takasu
- Division of GastroenterologyTohoku Medical and Pharmaceutical UniversitySendaiJapan
| | - Takayuki Kogure
- Division of GastroenterologyTohoku Medical and Pharmaceutical UniversitySendaiJapan
| | - Kazuhiro Murakami
- Division of PathologyTohoku Medical and Pharmaceutical UniversitySendaiJapan
| | - Kennichi Satoh
- Division of GastroenterologyTohoku Medical and Pharmaceutical UniversitySendaiJapan
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Satoh T, Kawaguchi S, Takeda S, Ishiguro Y, Asahara K, Terada S, Endo S, Shirane N, Kanemoto H, Ohno K. Comparison of Diagnostic Yield and Safety of Serial Pancreatic Juice Aspiration Cytologic Examination (SPACE) with Different Indications. Diagnostics (Basel) 2023; 13:diagnostics13081498. [PMID: 37189599 DOI: 10.3390/diagnostics13081498] [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: 03/29/2023] [Revised: 04/15/2023] [Accepted: 04/18/2023] [Indexed: 05/17/2023] Open
Abstract
We assessed whether there are differences in the diagnostic yield and safety of serial pancreatic juice aspiration cytologic examination (SPACE) among different indications. We retrospectively analyzed 226 patients who underwent SPACE. They were classified into group A (patients with pancreatic masses, including advanced adenocarcinoma, sclerosing pancreatitis, or autoimmune pancreatitis), group B (suspicious pancreatic carcinoma patients without obvious pancreatic masses, including small pancreatic carcinoma, carcinoma in situ, or benign pancreatic duct stenosis), and group C (intraductal papillary mucinous neoplasm, IPMN). There were 41, 66, and 119 patients, with malignancy diagnosed in 29, 14, and 22 patients, in groups A, B, and C, respectively. The sensitivity, specificity, positive predictive value, negative predictive value, and accuracy were 69%, 100%, 100%, 57%, and 78% in group A; 79%, 98%, 92%, 94%, and 94% in group B; and 27%, 87%, 32%, 84%, and 76% in group C, respectively. PEP was observed in three (7.3%), three (4.5%), and fifteen (13%) patients in group A, B, and C, respectively (p = 0.20). SPACE is useful and safe in patients with suspicious small pancreatic carcinoma. However, it has limited efficacy and might not be recommended in patients with IPMN because of the high frequency of PEP.
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Affiliation(s)
- Tatsunori Satoh
- Department of Gastroenterology, Shizuoka General Hospital, Shizuoka 420-8527, Japan
| | - Shinya Kawaguchi
- Department of Gastroenterology, Shizuoka General Hospital, Shizuoka 420-8527, Japan
| | - Shodai Takeda
- Department of Gastroenterology, Shizuoka General Hospital, Shizuoka 420-8527, Japan
| | - Yuya Ishiguro
- Department of Gastroenterology, Shizuoka General Hospital, Shizuoka 420-8527, Japan
| | - Kazuhisa Asahara
- Department of Gastroenterology, Shizuoka General Hospital, Shizuoka 420-8527, Japan
| | - Shuzo Terada
- Department of Gastroenterology, Shizuoka General Hospital, Shizuoka 420-8527, Japan
| | - Shinya Endo
- Department of Gastroenterology, Shizuoka General Hospital, Shizuoka 420-8527, Japan
| | - Naofumi Shirane
- Department of Gastroenterology, Shizuoka General Hospital, Shizuoka 420-8527, Japan
| | - Hideyuki Kanemoto
- Department of Surgery, Shizuoka General Hospital, Shizuoka 420-8527, Japan
| | - Kazuya Ohno
- Department of Gastroenterology, Shizuoka General Hospital, Shizuoka 420-8527, Japan
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Kikuyama M, Nakahodo J, Honda G, Suzuki M, Horiguchi SI, Chiba K, Tabata H, Ome Y, Uemura SI, Kawamoto Y, Kamisawa T. Pancreatic duct epithelial malignancy suggested by large focal pancreatic parenchymal atrophy in cystic diseases of the pancreas. Pancreatology 2023:S1424-3903(23)00066-2. [PMID: 37003856 DOI: 10.1016/j.pan.2023.03.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 02/23/2023] [Accepted: 03/12/2023] [Indexed: 04/03/2023]
Abstract
BACKGROUND /Objectives: A cystic lesion is common in the pancreas. Focal pancreatic parenchymal atrophy (FPPA) has been reported as a sign of high-grade pancreatic intraepithelial neoplasia/carcinoma in situ (HGP/CIS). Some cystic lesions accompany FPPA. However, the relationship between a cystic lesion, FPPA, and the histopathological background of the pancreatic duct is unknown. METHODS We retrospectively evaluated the data of 98 patients with a cystic lesion who underwent serial pancreatic juice aspiration cytologic examination (SPACE) because of accompanying FPPA, increased size of the cystic lesion, and pancreatic duct stricture at the base. RESULTS The clinical diagnosis of a cystic lesion was intraductal papillary mucinous neoplasia (IPMN) and cysts in 72 (73.5%) and 26 (26.5%) patients, respectively. Ninety of the 98 patients (91.8%) had FPPA. Positive results (adenocarcinoma and suspicion) on SPACE were observed in 56 of all cases (57.1%), 48 of IPMN (66.7%), 8 of cysts (30.8%), and 54 of FPPA (59.3%), and were significantly associated with IPMN (p = 0.002) and the large FPPA (>269.79 mm2,p = 0.0001); moreover, these disorders are considerably related (p = 0.0003). Fifty patients (51.0%) with positive results on SPACE underwent surgery, with the histopathological diagnosis of epithelial malignancy in 42 patients (42.9%, 42/50, 84%). Many cystic lesions clinically diagnosed as IPMN were dilated branches covered by pancreatic intraepithelial neoplasia. CONCLUSIONS Positive results on SPACE were significantly associated with the clinical diagnosis of IPMN and the large FPPA. Moreover, these disorders are significantly related. Surgery owing to positive results could lead to the histopathological diagnosis of HGP/CIS.
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Affiliation(s)
- Masataka Kikuyama
- Department of Gastroenterology, Tokyo Women's Medical Hospital, Tokyo, Japan; Department of Gastroenterology, Tokyo Metropolitan Komagome Hospital, Tokyo, Japan.
| | - Jun Nakahodo
- Department of Gastroenterology, Tokyo Metropolitan Komagome Hospital, Tokyo, Japan
| | - Goro Honda
- Department of Surgery, Tokyo Women's Medical Hospital, Tokyo, Japan
| | - Mizuka Suzuki
- Department of Radiology, Tokyo Metropolitan Komagome Hospital, Tokyo, Japan
| | | | - Kazuro Chiba
- Department of Gastroenterology, Tokyo Metropolitan Komagome Hospital, Tokyo, Japan
| | - Hiroki Tabata
- Department of Gastroenterology, Tokyo Metropolitan Komagome Hospital, Tokyo, Japan
| | - Yusuke Ome
- Department of Surgery, Tokyo Women's Medical Hospital, Tokyo, Japan
| | | | - Yusuke Kawamoto
- Department of Surgery, Tokyo Women's Medical Hospital, Tokyo, Japan
| | - Terumi Kamisawa
- Department of Gastroenterology, Tokyo Metropolitan Komagome Hospital, Tokyo, Japan
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Clinical Features and Prognostic Impact of Pancreatic Ductal Adenocarcinoma without Dilatation of the Main Pancreatic Duct: A Single-Center Retrospective Analysis. Diagnostics (Basel) 2023; 13:diagnostics13050963. [PMID: 36900107 PMCID: PMC10000697 DOI: 10.3390/diagnostics13050963] [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: 01/30/2023] [Revised: 02/25/2023] [Accepted: 03/01/2023] [Indexed: 03/06/2023] Open
Abstract
The presence of main pancreatic duct (MPD) dilatation is important for diagnosing pancreatic ductal adenocarcinomas (PDACs). However, we occasionally encounter PDAC cases without MPD dilatation. The objectives of this study were to compare the clinical findings and prognosis of pathologically diagnosed PDAC cases with and without MPD dilatation and to extract factors related to the prognosis of PDAC. The 281 patients pathologically diagnosed with PDAC were divided into two groups: the dilatation group (n = 215), consisting of patients with MPD dilatation of 3 mm or more, and the non-dilatation group (n = 66), consisting of patients with MPD dilatation less than 3 mm. We found that the non-dilatation group had more cancers in the pancreatic tail, more advanced disease stage, lower resectability, and worse prognoses than the dilatation group. Clinical stage and history of surgery or chemotherapy were identified as significant prognostic factors for PDAC, while tumor location was not. Endoscopic ultrasonography (EUS), diffusion-weighted magnetic resonance imaging (DW-MRI), and contrast-enhanced computed tomography had a high tumor detection rate for PDAC even in the non-dilatation group. Construction of a diagnostic system centered on EUS and DW-MRI is necessary for the early diagnosis of PDAC without MPD dilatation, which can improve its prognosis.
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Konno Y, Sugai Y, Kanoto M, Suzuki K, Hiraka T, Toyoguchi Y, Niino K. A retrospective preliminary study of intrapancreatic late enhancement as a noteworthy imaging finding in the early stages of pancreatic adenocarcinoma. Eur Radiol 2023:10.1007/s00330-022-09388-w. [PMID: 36648551 DOI: 10.1007/s00330-022-09388-w] [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: 04/02/2022] [Revised: 11/10/2022] [Accepted: 12/23/2022] [Indexed: 01/18/2023]
Abstract
OBJECTIVE To characterize intrapancreatic late enhancement (ILE) observed in the early stages of pancreatic adenocarcinoma (PAC). METHODS Among 203 patients pathologically diagnosed with PAC between October 2011 and February 2021, 32 patients with pre-diagnostic abdominal contrast-enhanced CT performed from 6 months to 5 years before the diagnosis were enrolled in this study. Indirect findings (IFs) on pre-diagnostic CT, including ILE, were evaluated and examined for various clinical data and time intervals to diagnosis (TIDs). The detected ILE was quantitatively evaluated, and the effect of ILE awareness on lesion detection by two radiologists and their interobserver agreement were assessed. RESULTS Among the 32 patients, 23 showed IFs. ILE was observed in 14 patients (63%), with a median TID of 17 months (interquartile ratio [IQR]: 9.3-42.3). ILE alone was observed in eight patients (35%), ILE with focal pancreatic parenchymal atrophy (FPPA) was observed in five patients (22%), and ILE with main pancreatic duct abnormalities (MPDA) was observed in one patient (4%). Pancreatic head lesions were significantly more frequent in patients with ILE alone than in patients with FPPA or MPDA (p = 0.026). The median long-axis diameters of the region with ILE and ILE-to-pancreas contrast were 10 (IQR: 5-11) mm and 24 (IQR: 17-33) HU, respectively. Awareness of ILE led observers to detect two or three more pancreatic head lesions, and interobserver agreement increased from poor agreement (k = 0.17) to moderate agreement (k = 0.55). CONCLUSION ILE is a significant IF for early PAC detection. KEY POINTS • Intrapancreatic late enhancement (ILE) is a significant indirect finding in the early detection of pancreatic adenocarcinoma. • ILE without other indirect findings is expected to help detect pancreatic head lesions. • Image evaluation focusing on ILE can increase lesion detection and improve the interobserver agreement.
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Affiliation(s)
- Yoshihiro Konno
- Department of Diagnostic Radiology, Faculty of Medicine, Yamagata University, 2-2-2 Iida-Nishi, Yamagata-Shi, Yamagata, 990-9585, Japan.
| | - Yasuhiro Sugai
- Department of Diagnostic Radiology, Faculty of Medicine, Yamagata University, 2-2-2 Iida-Nishi, Yamagata-Shi, Yamagata, 990-9585, Japan
| | - Masafumi Kanoto
- Department of Diagnostic Radiology, Faculty of Medicine, Yamagata University, 2-2-2 Iida-Nishi, Yamagata-Shi, Yamagata, 990-9585, Japan
| | - Keisuke Suzuki
- Department of Diagnostic Radiology, Faculty of Medicine, Yamagata University, 2-2-2 Iida-Nishi, Yamagata-Shi, Yamagata, 990-9585, Japan
| | - Toshitada Hiraka
- Department of Diagnostic Radiology, Faculty of Medicine, Yamagata University, 2-2-2 Iida-Nishi, Yamagata-Shi, Yamagata, 990-9585, Japan
| | - Yuki Toyoguchi
- Department of Diagnostic Radiology, Faculty of Medicine, Yamagata University, 2-2-2 Iida-Nishi, Yamagata-Shi, Yamagata, 990-9585, Japan
| | - Kazuho Niino
- Department of Radiology, Nihonkai General Hospital, 30 Akiho, Sakata-Shi, Yamagata, 998-8501, Japan
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11
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Mie T, Sasaki T, Sasahira N. Serial pancreatic juice aspiration cytologic examination with balloon-assisted enteroscopy in surgically altered anatomy. Dig Endosc 2023; 35:e13-e15. [PMID: 36349682 DOI: 10.1111/den.14454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 10/12/2022] [Indexed: 11/10/2022]
Affiliation(s)
- Takafumi Mie
- Department of Hepato-Biliary-Pancreatic Medicine, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Takashi Sasaki
- Department of Hepato-Biliary-Pancreatic Medicine, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Naoki Sasahira
- Department of Hepato-Biliary-Pancreatic Medicine, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
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12
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Nakahodo J, Kikuyama M, Fukumura Y, Horiguchi SI, Chiba K, Tabata H, Suzuki M, Kamisawa T. Focal pancreatic parenchyma atrophy is a harbinger of pancreatic cancer and a clue to the intraductal spreading subtype. Pancreatology 2022; 22:1148-1158. [PMID: 36273992 DOI: 10.1016/j.pan.2022.10.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 09/14/2022] [Accepted: 10/11/2022] [Indexed: 11/23/2022]
Abstract
BACKGROUND/OBJECTIVES Radiological evidence of focal pancreatic parenchymal atrophy (FPPA) may presage early pancreatic ductal adenocarcinoma (PDAC) development. We aimed to clarify the incidence of FPPA and the clinicopathological features of PDAC with FPPA before diagnosis. METHODS Data on endoscopic ultrasound-guided fine-needle biopsies and surgical samples from 170 patients with pancreatic cancer histologically diagnosed between 2014 and 2019 were extracted from the pathology database of Komagome Hospital and Juntendo University hospital and retrospectively evaluated together with 51 patients without PDAC. RESULTS FPPA was identified in 47/170 (28%) patients before PDAC diagnosis and in 2/51 (4%) patients in the control group (P < 0.01). The median duration from FPPA detection to diagnosis was 35 (interquartile range [IQR]:16-63) months. In 24/47 (51%) patients with FPPA, the atrophic area resolved. The lesion was in the head and body/tail in 7/40 and 67/56 of the patients with (n = 47) and without FPPA (n = 123), respectively (P < 0.001). Histopathologically confirmed non-invasive lesions in the main pancreatic duct and a positive surgical margin in the resected specimens occurred in 53% vs. 21% (P = 0.078) and 29% vs. 3% (P = 0.001) of the groups, respectively. The PDAC patients with FPPA accompanied by a malignant pancreatic resection margin had high-grade pancreatic intraepithelial neoplasia. CONCLUSIONS FPPA occurred in 28% of the PDAC group at 35 months prediagnosis. The FPPA area resolved before PDAC onset. Benchmarking previous images of the pancreas with the focus on FPPA may enable prediction of PDAC. PDAC with FPPA involves widespread high-grade pancreatic intraepithelial neoplasia requiring a wide surgical margin for surgical excision.
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Affiliation(s)
- Jun Nakahodo
- Department of Gastroenterology, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, Bunkyo-Ku, Tokyo, Japan; Department of Human Pathology, Juntendo University, Bunkyo-Ku, Tokyo, Japan; Pancreatic Cancer Research for Secure Salvage Young Investigators (PASSYON), Japan.
| | - Masataka Kikuyama
- Department of Gastroenterology, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, Bunkyo-Ku, Tokyo, Japan; Department of Gastroenterology, Tokyo Women's Medical University Hospital, Shinjuku-Ku, Tokyo, Japan
| | - Yuki Fukumura
- Department of Human Pathology, Juntendo University, Bunkyo-Ku, Tokyo, Japan
| | - Shin-Ichiro Horiguchi
- Department of Pathology, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, Bunkyo-Ku, Tokyo, Japan
| | - Kazuro Chiba
- Department of Gastroenterology, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, Bunkyo-Ku, Tokyo, Japan
| | - Hiroki Tabata
- Department of Gastroenterology, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, Bunkyo-Ku, Tokyo, Japan
| | - Mizuka Suzuki
- Department of Radiology, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, Bunkyo-Ku, Tokyo, Japan
| | - Terumi Kamisawa
- Department of Gastroenterology, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, Bunkyo-Ku, Tokyo, Japan
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13
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Kuwatani M, Sakamoto N. Pathological and molecular diagnoses of early cancer with bile and pancreatic juice. Dig Endosc 2022; 34:1340-1355. [PMID: 35543333 DOI: 10.1111/den.14348] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Accepted: 05/10/2022] [Indexed: 12/13/2022]
Abstract
The dismal prognosis of pancreaticobiliary malignancies is mainly attributed to the extremely difficult detection of early-stage lesions, including intraepithelial neoplasia. To improve prognosis, several studies on the early detection of cancer have been conducted using bile and pancreatic juices for pathological or molecular analyses. One approach is liquid biopsy that includes information about the tumor, such as circulating tumor cells, circulating tumor DNA, microRNAs, and exosomes released by the tumor. Another approach is proteomics/metabolomics that reflects specific conditions in the tumor. These two approaches lead to artificial intelligence-based multiomics analyses that comprises genomics, proteomics/metabolomics, and transcriptomics. Based on the findings of molecular analysis, pathological analysis using immunohistochemical staining/fluorescence in situ hybridization has also been developed. Moreover, there have been reports of new methods/ingenuities for obtaining appropriate samples for the diagnosis of early-stage cancer. Here we review the knowledge on cutting-edge pathological and molecular analyses of bile and pancreatic juices, introduce some ingenuities in sampling and sample processing to promote effective clinical practice, and provide a basis for future studies.
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Affiliation(s)
- Masaki Kuwatani
- Department of Gastroenterology and Hepatology, Hokkaido University Hospital, Hokkaido, Japan
| | - Naoya Sakamoto
- Department of Gastroenterology and Hepatology, Hokkaido University Hospital, Hokkaido, Japan
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14
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Diagnostic Yield of Serial Pancreatic Juice Aspiration Cytologic Examination With Brush Cytology for Pancreatic Ductal Stenosis. Pancreas 2022; 51:995-999. [PMID: 36607945 DOI: 10.1097/mpa.0000000000002135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
OBJECTIVES Serial pancreatic-juice aspiration cytologic examination (SPACE) is useful for diagnosis of pancreatic ductal stenosis. This study investigates the utility of adding brush cytology to SPACE during the same procedure. METHODS We retrospectively analyzed consecutive patients who underwent SPACE with brush cytology for pancreatic ductal stenosis between February 2014 and July 2020 in our hospital. RESULTS Thirty-four patients were included. Eleven had lesions in the pancreatic head lesions, and 23 had lesions in the pancreatic body or tail. Malignancies were found in 22 patients. Endoscopic ultrasound, computed tomography, and magnetic resonance imaging showed distal pancreatic duct dilation in 81.8% to 90.6% of cases, with a sensitivity of 63.0% to 65.5%. The sensitivity and diagnostic accuracy of SPACE, brush cytology, and SPACE with brush cytology were 63.6%, 50.0%, and 77.3% (P = 0.19) and 73.5%, 67.6%, and 82.4% (P = 0.42), respectively. No significant differences in diagnostic yield were observed for either pancreatic head lesions or pancreatic body/tail lesions. Post-endoscopic retrograde cholangiopancreatography pancreatitis was observed in 4 cases (11.8%). CONCLUSIONS The utility of adding brush cytology to SPACE was limited.
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15
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Hanada K, Shimizu A, Kurihara K, Ikeda M, Yamamoto T, Okuda Y, Tazuma S. Endoscopic approach in the diagnosis of high-grade pancreatic intraepithelial neoplasia. Dig Endosc 2022; 34:927-937. [PMID: 35165942 DOI: 10.1111/den.14240] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 01/02/2022] [Accepted: 01/16/2022] [Indexed: 02/08/2023]
Abstract
Early diagnosis of pancreatic ductal adenocarcinoma (PDAC) is essential for improving prognosis; however, diagnosing PDAC at an early stage is challenging. In patients with localized high-grade pancreatic intraepithelial neoplasia (HG-PanIN), whose tumorous lesion is undetectable on cross-sectional images such as computed tomography or magnetic resonance image, long-term survival is expected. Pancreatic cystic lesions or main pancreatic duct (MPD) dilatation are important indirect findings for the initial diagnosis of HG-PanIN. Magnetic resonance cholangiopancreatography (MRCP) and endoscopic ultrasound (EUS) should play important roles in detecting abnormal image findings, such as local irregular MPD stenosis, caliber MPD changes, small cystic lesions, or branch duct dilatation. Additionally, EUS could detect hypoechoic areas around the MPD stenosis in some patients with HG-PanIN. Subsequently, endoscopic retrograde cholangiopancreatography (ERCP) and its associated pancreatic juice cytology, including serial pancreatic juice aspiration cytologic examination (SPACE) after placement of an endoscopic nasopancreatic drainage (ENPD) tube, may have high diagnostic accuracy for confirming the malignancy in HG-PanIN. Although ERCP and its associated pancreatic cytology, including SPACE, may be associated with post-ERCP pancreatitis (PEP), a recent randomized trial suggested that a 4-Fr ENPD tube may reduce the incidence of PEP. In the future, further prospective multicenter studies are required to establish a standard method of SPACE. Additionally, further studies for novel biomarkers could help to establish evolutionary methods with duodenal fluid and pancreatic juice for the early and accurate diagnosis of early-stage PDAC.
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Affiliation(s)
- Keiji Hanada
- Department of Gastroenterology, Onomichi General Hospital, Hiroshima, Japan
| | - Akihiro Shimizu
- Department of Gastroenterology, Onomichi General Hospital, Hiroshima, Japan
| | - Keisuke Kurihara
- Department of Gastroenterology, Onomichi General Hospital, Hiroshima, Japan
| | - Morito Ikeda
- Department of Gastroenterology, Onomichi General Hospital, Hiroshima, Japan
| | - Takuya Yamamoto
- Department of Gastroenterology, Onomichi General Hospital, Hiroshima, Japan
| | - Yasuhiro Okuda
- Department of Gastroenterology, Onomichi General Hospital, Hiroshima, Japan
| | - Susumu Tazuma
- Department of Gastroenterology, Onomichi General Hospital, Hiroshima, Japan
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16
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Kurita A, Mori Y, Someya Y, Kubo S, Azuma S, Iwano K, Ikeda S, Okumura R, Yazumi S. High signal intensity on diffusion-weighted magnetic resonance images is a useful finding for detecting early-stage pancreatic cancer. Abdom Radiol (NY) 2021; 46:4817-4827. [PMID: 34223962 PMCID: PMC8435518 DOI: 10.1007/s00261-021-03199-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 06/24/2021] [Accepted: 06/26/2021] [Indexed: 02/06/2023]
Abstract
Purpose Early detection of pancreatic ductal adenocarcinoma (PDAC) may improve the prognosis. We evaluated novel imaging findings that may contribute to early detection. Methods This single-center, retrospective study enrolled 37 patients with a localized main pancreatic duct (MPD) stricture and no obvious pancreatic mass. All patients underwent endoscopic retrograde cholangiopancreatography and brush sampling with cytology and serial pancreatic juice aspiration cytologic examination via endoscopic naso-pancreatic drainage. Patients with cytology-confirmed malignancy underwent surgical resection. The remaining patients were followed by contrast-enhanced computed tomography (CECT), magnetic resonance imaging (MRI), and endoscopic retrograde cholangiopancreatography. Results Twenty patients had confirmed malignancy (cancer group) and 17 did not (non-cancer group). Age, MPD stricture location, and PDAC risk factors were similar, but the sex predominance and symptom rate differed between the two groups. In the cancer group, 17 patients were diagnosed by cytology and three by clinical symptoms. CECT, MRI, and endoscopic ultrasonography (EUS) revealed no solid tumors in either group. CECT revealed no significant differences between groups. Diffusion-weighted MRI revealed significant differences in the signal intensity between groups. EUS detected indistinct and small hypoechoic areas in 70% and 41.2% of patients in the cancer and non-cancer groups, respectively. In the cancer group, 11 were diagnosed with cancer at the first indication, and nine were diagnosed at follow-up; the prognosis did not differ between these two subgroups.ss Conclusions High signal intensity in diffusion-weighted MRI may be useful for detecting early-stage PDAC and may be an indication for surgical resection even without pathologic confirmation. Clinical trial registration The study was a registered at the University Hospital Medical Information Network (UMIN000039623). Graphic abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1007/s00261-021-03199-1.
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17
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Miura S, Kume K, Kikuta K, Hamada S, Takikawa T, Yoshida N, Hongo S, Tanaka Y, Matsumoto R, Sano T, Ikeda M, Furukawa T, Iseki M, Unno M, Masamune A. Focal Parenchymal Atrophy and Fat Replacement Are Clues for Early Diagnosis of Pancreatic Cancer with Abnormalities of the Main Pancreatic Duct. TOHOKU J EXP MED 2021; 252:63-71. [PMID: 32879148 DOI: 10.1620/tjem.252.63] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Pancreatic cancer is one of the most dangerous solid tumors, but its early diagnosis is difficult. The abnormality of the main pancreatic duct (MPD), such as a single localized stricture and upstream dilatation, might be useful in the early detection of pancreatic cancer. However, these findings are often observed in benign inflammatory cases. This study aimed to clarify whether early pancreatic cancer presenting MPD abnormalities has characteristic features different from those of benign cases. This is a single-center, retrospective study. We analyzed 20 patients who underwent pancreatectomy presenting with a single, localized MPD stricture without identifiable masses on imaging: 10 patients with pancreatic ductal adenocarcinoma (cancer group; 6 with stage 0 and 4 with stage I) and 10 patients with benign strictures (benign group; 8 with inflammation and 2 with low-grade pancreatic intraepithelial neoplasms). Pancreatectomy was performed in these benign cases because high-grade intraepithelial neoplasm was suspected. Although the proportion of patients with diabetes mellitus tended to be higher in the cancer group (6/10) than that in the benign group (1/10) (P = 0.058), other clinical characteristics were not different between the groups. Preoperative cytological malignancies were detected in four patients in the cancer group (4/10) but not in the benign group (P = 0.09). Focal parenchymal atrophy and fat replacement were more frequently detected on computed tomography in the cancer group (7/10) than in the benign group (1/10) (P = 0.02). In conclusion, focal parenchymal atrophy and fat replacement may provide clues for the early diagnosis of pancreatic cancer.
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Affiliation(s)
- Shin Miura
- Division of Gastroenterology, Tohoku University Graduate School of Medicine
| | - Kiyoshi Kume
- Division of Gastroenterology, Tohoku University Graduate School of Medicine
| | - Kazuhiro Kikuta
- Division of Gastroenterology, Tohoku University Graduate School of Medicine
| | - Shin Hamada
- Division of Gastroenterology, Tohoku University Graduate School of Medicine
| | - Tetsuya Takikawa
- Division of Gastroenterology, Tohoku University Graduate School of Medicine
| | - Naoki Yoshida
- Division of Gastroenterology, Tohoku University Graduate School of Medicine
| | - Seiji Hongo
- Division of Gastroenterology, Tohoku University Graduate School of Medicine
| | - Yu Tanaka
- Division of Gastroenterology, Tohoku University Graduate School of Medicine
| | - Ryotaro Matsumoto
- Division of Gastroenterology, Tohoku University Graduate School of Medicine
| | - Takanori Sano
- Division of Gastroenterology, Tohoku University Graduate School of Medicine
| | - Mio Ikeda
- Division of Gastroenterology, Tohoku University Graduate School of Medicine
| | - Toru Furukawa
- Department of Investigative Pathology, Tohoku University Graduate School of Medicine
| | - Masahiro Iseki
- Department of Surgery, Tohoku University Graduate School of Medicine
| | - Michiaki Unno
- Department of Surgery, Tohoku University Graduate School of Medicine
| | - Atsushi Masamune
- Division of Gastroenterology, Tohoku University Graduate School of Medicine
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18
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Kawaji Y, Yoshikawa T, Nakagawa K, Emori T, Nuta J, Tamura T, Hatamaru K, Yamashita Y, Itonaga M, Ashida R, Terada M, Kawai M, Sonomura T, Kitano M. Computed tomography findings for predicting the future occurrence of pancreatic cancer: value of pancreatic volumetry. Int J Clin Oncol 2021; 26:1304-1313. [PMID: 33829351 DOI: 10.1007/s10147-021-01915-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Accepted: 03/30/2021] [Indexed: 11/25/2022]
Abstract
BACKGROUND The features of pancreatic parenchyma that tend to progress towards pancreatic cancer (PC) are unknown. We performed volumetry of the pancreas in PC patients using computed tomography (CT) scans acquired before detection of PC, and investigated whether CT findings of pancreatic parenchyma could predict the future occurrence of PC. METHODS Between April 2009 and March 2017, a total of 3769 patients underwent abdominal contrast-enhanced CT, the scans of which were archived as digital images. Among them, 15 PC patients underwent abdominal CT 6-120 months before diagnosis of PC. This retrospective study compared the 15 PC patients (PC group) with 15 propensity score-matched subjects without PC (non-PC group). Pancreatic volumetry and radiological findings were compared between the two groups. RESULTS There were significant differences between the PC and non-PC groups in the volume of the main pancreatic duct (MPD) plus any cystic lesion (P = 0.007), volume of the MPD plus any cystic lesion/body surface area (BSA; P = 0.009), MPD diameter (P = 0.011), and MPD diameter/BSA (P = 0.013). Univariate analysis revealed volume of MPD plus any cystic lesion/BSA ≥ 0.53 mL/m2 (odds ratio [OR] 38.50, P = 0.002), volume of pancreatic parenchyma/BSA < 27.0 mL/m2 (OR 12.25, P = 0.030), and MPD diameter/BSA ≥ 1.0 mm/m2 (OR 13.00, P = 0.006) as significant risk factors for PC. CONCLUSIONS Quantification of the volume of MPD plus any cystic lesion/BSA, volume of pancreatic parenchyma/BSA, and MPD diameter/BSA on pre-diagnosis CT were useful for predicting the future occurrence of PC.
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Affiliation(s)
- Yuki Kawaji
- Second Department of Internal Medicine, Wakayama Medical University, 811-1 Kimiidera, Wakayama, Wakayama, 641-0012, Japan
| | - Takanori Yoshikawa
- Clinical Study Support Center, Wakayama Medical University, 811-1 Kimiidera, Wakayama, Wakayama, 641-0012, Japan
| | - Katsuji Nakagawa
- Wakayama-Minami Radiology Clinic, 870-2 Kimiidera, Wakayama, Wakayama, 641-0012, Japan
| | - Tomoya Emori
- Second Department of Internal Medicine, Wakayama Medical University, 811-1 Kimiidera, Wakayama, Wakayama, 641-0012, Japan
| | - Junya Nuta
- Second Department of Internal Medicine, Wakayama Medical University, 811-1 Kimiidera, Wakayama, Wakayama, 641-0012, Japan
| | - Takashi Tamura
- Second Department of Internal Medicine, Wakayama Medical University, 811-1 Kimiidera, Wakayama, Wakayama, 641-0012, Japan
| | - Keiichi Hatamaru
- Second Department of Internal Medicine, Wakayama Medical University, 811-1 Kimiidera, Wakayama, Wakayama, 641-0012, Japan
| | - Yasunobu Yamashita
- Second Department of Internal Medicine, Wakayama Medical University, 811-1 Kimiidera, Wakayama, Wakayama, 641-0012, Japan
| | - Masahiro Itonaga
- Second Department of Internal Medicine, Wakayama Medical University, 811-1 Kimiidera, Wakayama, Wakayama, 641-0012, Japan
| | - Reiko Ashida
- Second Department of Internal Medicine, Wakayama Medical University, 811-1 Kimiidera, Wakayama, Wakayama, 641-0012, Japan
| | - Masaki Terada
- Wakayama-Minami Radiology Clinic, 870-2 Kimiidera, Wakayama, Wakayama, 641-0012, Japan
| | - Manabu Kawai
- Second Department of Surgery, Wakayama Medical University, 811-1 Kimiidera, Wakayama, Wakayama, 641-0012, Japan
| | - Tetsuo Sonomura
- Department of Radiology, Wakayama Medical University, 811-1 Kimiidera, Wakayama, Wakayama, 641-0012, Japan
| | - Masayuki Kitano
- Second Department of Internal Medicine, Wakayama Medical University, 811-1 Kimiidera, Wakayama, Wakayama, 641-0012, Japan.
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Hanada K, Fukuhara M, Minami T, Yano S, Ikemoto J, Shimizu A, Kurihara K, Okuda Y, Ikeda M, Yokode M, Abe T, Yonehara S, Yanagisawa A. Pathological Features and Imaging Findings in Pancreatic Carcinoma In Situ. Pancreas 2021; 50:399-404. [PMID: 33835972 DOI: 10.1097/mpa.0000000000001771] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
OBJECTIVES This study aimed to evaluate the pathological features and imaging findings of pancreatic carcinoma in situ (PCIS). METHODS Twenty patients with PCIS were categorized as flat (F) (n = 6) and low papillary (LP) (n = 14) types. RESULTS None of F type and 8 (57%) of 14 with LP type lesions showed intraductal infiltrations of the main pancreatic duct (MPD) greater than 10 mm. None of F type and 3 (21%) of 14 with LP type lesions showed skip lesions in the MPD. Magnetic resonance cholangiopancreatography showed irregular MPD stenoses in 5 (83%) of 6 with F and 13 (100%) of 13 with LP type lesions. Magnetic resonance cholangiopancreatography determined that the median lengths of the irregular MPD stenoses were 3.6 mm for F, and 11.6 mm for LP type lesions. Endoscopic retrograde cholangiopancreatography determined that the median lengths of the irregular MPD stenoses were 2.8 mm for F, and 14.3 mm for LP type lesions. Pancreatic cancer recurrences limited to the remnant pancreas occurred in 2 patients with LP type lesions. CONCLUSIONS In LP type PCIS, intraductal infiltration of the MPD occurs frequently. There may be multiple lesions, and lesions may recur in the remnant pancreas. Long-term strict follow-up assessments should be implemented for LP type PCIS.
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Affiliation(s)
- Keiji Hanada
- From the Department of Gastroenterology, Onomichi General Hospital, Onomichi
| | - Motomitsu Fukuhara
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima
| | - Tomoyuki Minami
- Department of Gastroenterology, National Hospital Organization, Higashihiroshima Medical Center, Higashihiroshima
| | - Shigeki Yano
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima
| | - Juri Ikemoto
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima
| | - Akinori Shimizu
- From the Department of Gastroenterology, Onomichi General Hospital, Onomichi
| | - Keisuke Kurihara
- From the Department of Gastroenterology, Onomichi General Hospital, Onomichi
| | - Yasuhiro Okuda
- From the Department of Gastroenterology, Onomichi General Hospital, Onomichi
| | - Morito Ikeda
- From the Department of Gastroenterology, Onomichi General Hospital, Onomichi
| | - Masataka Yokode
- From the Department of Gastroenterology, Onomichi General Hospital, Onomichi
| | | | - Shuji Yonehara
- Department of Pathology, Onomichi General Hospital, Onomichi
| | - Akio Yanagisawa
- Department of Pathology, Japanese Red Cross Society Kyoto Daiichi Hospital, Kyoto, Japan
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Ikemoto J, Serikawa M, Hanada K, Eguchi N, Sasaki T, Fujimoto Y, Sugiyama S, Yamaguchi A, Noma B, Kamigaki M, Minami T, Okazaki A, Yukutake M, Ishii Y, Mouri T, Shimizu A, Tsuboi T, Arihiro K, Chayama K. Clinical Analysis of Early-Stage Pancreatic Cancer and Proposal for a New Diagnostic Algorithm: A Multicenter Observational Study. Diagnostics (Basel) 2021; 11:diagnostics11020287. [PMID: 33673151 PMCID: PMC7917700 DOI: 10.3390/diagnostics11020287] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 02/06/2021] [Accepted: 02/10/2021] [Indexed: 12/11/2022] Open
Abstract
Early diagnosis of pancreatic ductal adenocarcinoma (PDAC) is challenging but essential for improving its poor prognosis. We established a multicenter study to clarify the clinicopathological features, and to propose new algorithm for early diagnosis of PDAC. Ninety-six patients with stage 0 and IA PDAC were enrolled from 13 high-volume centers. Overall, 70% of the patients were asymptomatic. The serum pancreatic enzyme levels were abnormal in half of the patients. The sensitivity of endoscopic ultrasonography (EUS) for detecting small PDAC was superior to computed tomography and magnetic resonance imaging (MRI) (82%, 58%, and 38%, respectively). Indirect imaging findings were useful to detect early-stage PDAC; especially, main pancreatic duct stenosis on MRI had the highest positive rate of 86% in stage 0 patients. For preoperative pathological diagnosis, the sensitivity of endoscopic retrograde cholangiopancreatography (ERCP)-associated pancreatic juice cytology was 84%. Among the stage IA patients, EUS-guided fine-needle aspiration revealed adenocarcinoma in 93% patients. For early diagnosis of PDAC, it is essential to identify asymptomatic patients and ensure close examinations of indirect imaging findings and standardization of preoperative pathological diagnosis. Therefore, a new diagnostic algorithm based on tumor size and imaging findings should be developed.
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Affiliation(s)
- Juri Ikemoto
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8551, Japan; (M.S.); (Y.I.); (T.T.); (K.C.)
- Correspondence: ; Tel.: +81-82-257-5192; Fax: +81-82-257-5194
| | - Masahiro Serikawa
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8551, Japan; (M.S.); (Y.I.); (T.T.); (K.C.)
| | - Keiji Hanada
- Department of Gastroenterology, Onomichi General Hospital, Onomichi 722-8508, Japan; (K.H.); (A.S.)
| | - Noriaki Eguchi
- Department of Gastroenterology, Hiroshima Memorial Hospital, Hiroshima 730-0802, Japan;
| | - Tamito Sasaki
- Department of Gastroenterology, Hiroshima Prefectural Hospital, Hiroshima 734-8530, Japan;
| | - Yoshifumi Fujimoto
- Department of Gastroenterology, Hiroshima General Hospital, Hatsukaichi 738-8503, Japan;
| | - Shinichiro Sugiyama
- Department of Gastroenterology, Saiseikai Hiroshima Hospital, Aki 731-4311, Japan;
| | - Atsushi Yamaguchi
- Department of Gastroenterology, National Hospital Organization Kure Medical Center and Chugoku Cancer Center, Kure 737-0023, Japan;
| | - Bunjiro Noma
- Department of Gastroenterology, Kure Kyosai Hospital, Kure 737-8508, Japan;
| | - Michihiro Kamigaki
- Department of Gastroenterology, Saiseikai Kure Hospital, Kure 737-0921, Japan;
| | - Tomoyuki Minami
- Department of Gastroenterology, National Hospital Organization Higashihiroshima Medical Center Affiliation, Higashihiroshima 739-0041, Japan;
| | - Akihito Okazaki
- Department of Gastroenterology, Hiroshima Red Cross Hospital & Atomic-bomb Survivors Hospital, Hiroshima 730-8619, Japan;
| | - Masanobu Yukutake
- Department of Gastroenterology, Hiroshima City Asa Citizens Hospital, Hiroshima 731-0293, Japan;
| | - Yasutaka Ishii
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8551, Japan; (M.S.); (Y.I.); (T.T.); (K.C.)
| | - Teruo Mouri
- Department of Gastroenterology, Chugoku Rosai Hospital, Kure 737-0193, Japan;
| | - Akinori Shimizu
- Department of Gastroenterology, Onomichi General Hospital, Onomichi 722-8508, Japan; (K.H.); (A.S.)
| | - Tomofumi Tsuboi
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8551, Japan; (M.S.); (Y.I.); (T.T.); (K.C.)
| | - Koji Arihiro
- Department of Anatomical Pathology, Hiroshima University Hospital, Hiroshima 734-8551, Japan;
| | - Kazuaki Chayama
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8551, Japan; (M.S.); (Y.I.); (T.T.); (K.C.)
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Nakahodo J, Kikuyama M, Nojiri S, Chiba K, Yoshimoto K, Kamisawa T, Horiguchi SI, Honda G. Focal parenchymal atrophy of pancreas: An important sign of underlying high-grade pancreatic intraepithelial neoplasia without invasive carcinoma, i.e., carcinoma in situ. Pancreatology 2020; 20:1689-1697. [PMID: 33039293 DOI: 10.1016/j.pan.2020.09.020] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 09/25/2020] [Accepted: 09/28/2020] [Indexed: 12/11/2022]
Abstract
OBJECTIVES Diagnosing high-grade intraepithelial neoplasia without invasion, traditionally referred to as carcinoma in situ (CIS), is essential for improving prognosis. We examined the imaging findings of patients with and without CIS to identify significant aspects for the diagnosis of CIS. METHODS Forty-six patients strongly suspected of early pancreatic cancer without nodule on imaging (CIS group, n = 27; non-malignant group, n = 19) were retrospectively evaluated according to ten factors of computed tomography/magnetic resonance imaging (CT/MRI), endoscopic ultrasonography (EUS), and endoscopic retrograde cholangiopancreatography (ERCP) using hierarchical cluster and univariate analyses. RESULTS Two clusters were formed by hierarchical cluster analysis. One cluster consisted of 83.3% CIS cases with similar image findings such as focal pancreatic parenchymal atrophy (FPPA) on CT/MRI, main pancreatic duct (MPD) stricture surrounded by hypoechoic areas on EUS, and MPD stricture with upstream MPD dilation on ERCP. On univariate analysis, the CIS and non-malignant groups had FPPA on CT/MRI in 15 (55.6%) and 3 (15.8%) cases (p = 0.013), and MPD stricture surrounded by hypoechoic areas on EUS in 20 (74.1%) and 4 (21.1%) cases (p = 0.001), respectively. MPD stricture surrounded by hypoechoic areas was observed in 80% (12/15) of CIS cases with FPPA on CT/MRI and correlated with FPPA. Moreover, FPPA and MPD stricture surrounded by hypoechoic areas had histopathologically observed fibrosis or fat replacement due to pancreatic parenchymal atrophy. CONCLUSIONS FPPA and MPD stricture surrounded by hypoechoic areas are significant findings for the diagnosis of CIS.
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Affiliation(s)
- Jun Nakahodo
- Department of Gastroenterology, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, Bunkyo-Ku, Tokyo, Japan; Department of Human Pathology, Juntendo University, Bunkyo-Ku, Tokyo, Japan.
| | - Masataka Kikuyama
- Department of Gastroenterology, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, Bunkyo-Ku, Tokyo, Japan
| | - Shuko Nojiri
- Department of Medical Technology Innovation Center, Juntendo University, Bunkyo-Ku, Tokyo, Japan
| | - Kazuro Chiba
- Department of Gastroenterology, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, Bunkyo-Ku, Tokyo, Japan
| | - Kensuke Yoshimoto
- Department of Gastroenterology, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, Bunkyo-Ku, Tokyo, Japan; Division of Gastroenterology and Hepatology, Department of Internal Medicine (Omori), School of Medicine, Faculty of Medicine, Toho University, Ota-ku, Tokyo, Japan
| | - Terumi Kamisawa
- Department of Gastroenterology, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, Bunkyo-Ku, Tokyo, Japan
| | - Shin-Ichiro Horiguchi
- Department of Pathology, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, Bunkyo-Ku, Tokyo, Japan
| | - Goro Honda
- Department of Gastroenterological Surgery, New Tokyo Hospital, Matsudo, Chiba, Japan
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22
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Inomata N, Kobayashi T, Masuda A, Masuda S, Ashina S, Gonda M, Abe S, Yamakawa K, Tsujimae M, Tanaka T, Yamada Y, Tanaka S, Kakihara M, Nakano R, Ikegawa T, Sakai A, Shiomi H, Kannzawa M, Toyama H, Itoh T, Fukumoto T, Kodama Y. A case of high-grade pancreatic intraepithelial neoplasia diagnosed based on focal pancreatic parenchymal atrophy after acute pancreatitis. Clin J Gastroenterol 2020; 13:1338-1342. [PMID: 32803643 DOI: 10.1007/s12328-020-01208-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 08/09/2020] [Indexed: 10/23/2022]
Abstract
A 60-year-old male visited a previous hospital with upper abdominal pain. He was diagnosed with localized mild acute pancreatitis. Three months later, abdominal contrast-enhanced computed tomography showed focal parenchymal atrophy of the pancreas with distal pancreatic duct dilation. No obvious solid mass could be found at the site of the pancreatic duct stenosis on imaging examinations. Endoscopic retrograde pancreatography showed focal mild stenosis with distal pancreatic duct dilation in the tail of the pancreas. Carcinoma in situ of the pancreas was strongly suspected, especially based on the presence of focal atrophy of the pancreas around the site of stenosis of the main pancreatic duct and the distal pancreatic duct dilation. Laparoscopic distal pancreatectomy was performed. Histologically, high-grade pancreatic intraepithelial neoplasia was found in the epithelium of the stenotic main pancreatic duct and its branches. This case suggests that localized acute pancreatitis and focal atrophy of the pancreas with distal dilation of the pancreatic duct could be important clinical manifestations of pancreatic carcinoma in situ.
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Affiliation(s)
- Noriko Inomata
- Division of Gastroenterology, Department of Internal Medicine, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan.
| | - Takashi Kobayashi
- Division of Gastroenterology, Department of Internal Medicine, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Atsuhiro Masuda
- Division of Gastroenterology, Department of Internal Medicine, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Shigeto Masuda
- Division of Gastroenterology, Department of Internal Medicine, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Shigeto Ashina
- Division of Gastroenterology, Department of Internal Medicine, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Masanori Gonda
- Division of Gastroenterology, Department of Internal Medicine, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Shohei Abe
- Division of Gastroenterology, Department of Internal Medicine, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Kohei Yamakawa
- Division of Gastroenterology, Department of Internal Medicine, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Masahiro Tsujimae
- Division of Gastroenterology, Department of Internal Medicine, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Takeshi Tanaka
- Division of Gastroenterology, Department of Internal Medicine, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Yasutaka Yamada
- Division of Gastroenterology, Department of Internal Medicine, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Shunta Tanaka
- Division of Gastroenterology, Department of Internal Medicine, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Maya Kakihara
- Division of Gastroenterology, Department of Internal Medicine, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Ryota Nakano
- Division of Gastroenterology, Department of Internal Medicine, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Takuya Ikegawa
- Division of Gastroenterology, Department of Internal Medicine, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Arata Sakai
- Division of Gastroenterology, Department of Internal Medicine, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Hideyuki Shiomi
- Division of Gastroenterology, Department of Internal Medicine, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Maki Kannzawa
- Department of Diagnostic Pathology, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Hirochika Toyama
- Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Tomoo Itoh
- Department of Diagnostic Pathology, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Takumi Fukumoto
- Division of Hepato-Biliary-Pancreatic Surgery, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Yuzo Kodama
- Division of Gastroenterology, Department of Internal Medicine, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
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23
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Yamao K, Takenaka M, Ishikawa R, Okamoto A, Yamazaki T, Nakai A, Omoto S, Kamata K, Minaga K, Matsumoto I, Takeyama Y, Numoto I, Tsurusaki M, Chikugo T, Chiba Y, Watanabe T, Kudo M. Partial Pancreatic Parenchymal Atrophy Is a New Specific Finding to Diagnose Small Pancreatic Cancer (≤10 mm) Including Carcinoma in Situ: Comparison with Localized Benign Main Pancreatic Duct Stenosis Patients. Diagnostics (Basel) 2020; 10:diagnostics10070445. [PMID: 32630180 PMCID: PMC7400308 DOI: 10.3390/diagnostics10070445] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 06/26/2020] [Accepted: 06/29/2020] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND This study aimed to evaluate and identify the specific CT findings by focusing on abnormalities in the main pancreatic duct (MPD) and pancreatic parenchyma in patients with small pancreatic cancer (PC) including carcinoma in situ (CIS). METHODS Nine CT findings indicating abnormalities of MPD and pancreatic parenchyma were selected as candidate findings for the presence of small PC ≤ 10 mm. The proportions of patients positive for each finding were compared between small PC and benign MPD stenosis groups. Interobserver agreement between two independent image reviewers was evaluated using kappa statistics. RESULTS The final analysis included 24 patients with small PC (including 11 CIS patients) and 28 patients with benign MPD stenosis. The proportion of patients exhibiting partial pancreatic parenchymal atrophy (PPA) corresponding to the distribution of MPD stenosis (45.8% vs. 7.1%, p < 0.01), upstream PPA arising from the site of MPD stenosis (33.3% vs. 3.6%, p = 0.01), and MPD abrupt stenosis (45.8% vs. 14.3%, p = 0.03) was significantly higher in the small PC group than in the benign MPD stenosis group. CONCLUSIONS The presence of partial PPA, upstream PPA, and MPD abrupt stenosis on a CT image was highly suggestive of the presence of small PCs including CIS.
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Affiliation(s)
- Kentaro Yamao
- Department of Gastroenterology and Hepatology, Kindai University Faculty of Medicine, Osaka-Sayama, Osaka 589-8511, Japan; (M.T.); (R.I.); (A.O.); (T.Y.); (A.N.); (S.O.); (K.K.); (K.M.); (T.W.); (M.K.)
- Correspondence: ; Tel.: +81-72-366-0221; Fax: +81-72-367-2880
| | - Mamoru Takenaka
- Department of Gastroenterology and Hepatology, Kindai University Faculty of Medicine, Osaka-Sayama, Osaka 589-8511, Japan; (M.T.); (R.I.); (A.O.); (T.Y.); (A.N.); (S.O.); (K.K.); (K.M.); (T.W.); (M.K.)
| | - Rei Ishikawa
- Department of Gastroenterology and Hepatology, Kindai University Faculty of Medicine, Osaka-Sayama, Osaka 589-8511, Japan; (M.T.); (R.I.); (A.O.); (T.Y.); (A.N.); (S.O.); (K.K.); (K.M.); (T.W.); (M.K.)
| | - Ayana Okamoto
- Department of Gastroenterology and Hepatology, Kindai University Faculty of Medicine, Osaka-Sayama, Osaka 589-8511, Japan; (M.T.); (R.I.); (A.O.); (T.Y.); (A.N.); (S.O.); (K.K.); (K.M.); (T.W.); (M.K.)
| | - Tomohiro Yamazaki
- Department of Gastroenterology and Hepatology, Kindai University Faculty of Medicine, Osaka-Sayama, Osaka 589-8511, Japan; (M.T.); (R.I.); (A.O.); (T.Y.); (A.N.); (S.O.); (K.K.); (K.M.); (T.W.); (M.K.)
| | - Atsushi Nakai
- Department of Gastroenterology and Hepatology, Kindai University Faculty of Medicine, Osaka-Sayama, Osaka 589-8511, Japan; (M.T.); (R.I.); (A.O.); (T.Y.); (A.N.); (S.O.); (K.K.); (K.M.); (T.W.); (M.K.)
| | - Shunsuke Omoto
- Department of Gastroenterology and Hepatology, Kindai University Faculty of Medicine, Osaka-Sayama, Osaka 589-8511, Japan; (M.T.); (R.I.); (A.O.); (T.Y.); (A.N.); (S.O.); (K.K.); (K.M.); (T.W.); (M.K.)
| | - Ken Kamata
- Department of Gastroenterology and Hepatology, Kindai University Faculty of Medicine, Osaka-Sayama, Osaka 589-8511, Japan; (M.T.); (R.I.); (A.O.); (T.Y.); (A.N.); (S.O.); (K.K.); (K.M.); (T.W.); (M.K.)
| | - Kosuke Minaga
- Department of Gastroenterology and Hepatology, Kindai University Faculty of Medicine, Osaka-Sayama, Osaka 589-8511, Japan; (M.T.); (R.I.); (A.O.); (T.Y.); (A.N.); (S.O.); (K.K.); (K.M.); (T.W.); (M.K.)
| | - Ippei Matsumoto
- Department of Surgery, Kindai University Faculty of Medicine, Osaka-Sayama, Osaka 589-8511, Japan; (I.M.); (Y.T.)
| | - Yoshifumi Takeyama
- Department of Surgery, Kindai University Faculty of Medicine, Osaka-Sayama, Osaka 589-8511, Japan; (I.M.); (Y.T.)
| | - Isao Numoto
- Department of Diagnostic Radiology, Kindai University Faculty of Medicine, Osaka-Sayama, Osaka 589-8511, Japan; (I.N.); (M.T.)
| | - Masakatsu Tsurusaki
- Department of Diagnostic Radiology, Kindai University Faculty of Medicine, Osaka-Sayama, Osaka 589-8511, Japan; (I.N.); (M.T.)
| | - Takaaki Chikugo
- Department of Pathology, Kindai University Faculty of Medicine, Osaka-Sayama, Osaka 589-8511, Japan;
| | - Yasutaka Chiba
- Clinical Research Center, Kindai University, Osaka–Sayama, Osaka 589-8511, Japan;
| | - Tomohiro Watanabe
- Department of Gastroenterology and Hepatology, Kindai University Faculty of Medicine, Osaka-Sayama, Osaka 589-8511, Japan; (M.T.); (R.I.); (A.O.); (T.Y.); (A.N.); (S.O.); (K.K.); (K.M.); (T.W.); (M.K.)
| | - Masatoshi Kudo
- Department of Gastroenterology and Hepatology, Kindai University Faculty of Medicine, Osaka-Sayama, Osaka 589-8511, Japan; (M.T.); (R.I.); (A.O.); (T.Y.); (A.N.); (S.O.); (K.K.); (K.M.); (T.W.); (M.K.)
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24
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Kuruma S, Kikuyama M, Chiba K, Yoshimoto K, Kamisawa T, Honda G, Horiguchi S, Nakahodo J. Carcinoma in situ of the pancreas with pancreatic duct stricture persistent for 4 years diagnosed by serial pancreatic juice aspiration cytologic examination (SPACE). Clin J Gastroenterol 2019; 13:443-447. [PMID: 31768883 DOI: 10.1007/s12328-019-01065-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 10/28/2019] [Indexed: 01/06/2023]
Abstract
Serial pancreatic juice aspiration cytologic examination (SPACE) by nasopancreatic tube placement can give us an opportunity to diagnose early-stage pancreatic cancer with higher sensitivity and specificity compared with conventional pancreatic cytology by one-time pancreatic juice aspiration or pancreatic duct brushing. We performed SPACE in a patient with persistent pancreatic duct stricture (PDS) with gradually advancing pancreatic parenchyma atrophy (PPA) in the pancreas tail. The result of SPACE was suggestive of pancreatic carcinoma, and distal pancreatectomy was performed. Histopathological examination of the resected specimen revealed carcinoma in situ of the pancreas. The present case could indicate that any PDS becomes a candidate for SPACE especially in a patient with PPA, although the PDS remains unchanged for a long period.
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Affiliation(s)
- Sawako Kuruma
- Department of Gastroenterology, Tokyo Metropolitan Cancer and Infectious Diseases Komagome Hospital, Tokyo, Japan.
| | - Masataka Kikuyama
- Department of Gastroenterology, Tokyo Metropolitan Cancer and Infectious Diseases Komagome Hospital, Tokyo, Japan
| | - Kazuro Chiba
- Department of Gastroenterology, Tokyo Metropolitan Cancer and Infectious Diseases Komagome Hospital, Tokyo, Japan
| | - Kensuke Yoshimoto
- Department of Gastroenterology, Tokyo Metropolitan Cancer and Infectious Diseases Komagome Hospital, Tokyo, Japan
| | - Terumi Kamisawa
- Department of Gastroenterology, Tokyo Metropolitan Cancer and Infectious Diseases Komagome Hospital, Tokyo, Japan
| | - Goro Honda
- Department of Surgery, New Tokyo Hospital, Chiba, Japan
| | - Shinichiro Horiguchi
- Department of Pathology, Tokyo Metropolitan Cancer and Infectious Diseases Komagome Hospital, Tokyo, Japan
| | - Jun Nakahodo
- Department of Human Pathology, Juntendo University, Tokyo, Japan
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25
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Kanno Y, Koshita S, Ogawa T, Kusunose H, Masu K, Sakai T, Yonamine K, Kawakami Y, Fujii Y, Miyamoto K, Murabayashi T, Kozakai F, Horaguchi J, Noda Y, Oikawa M, Okada T, Ito K. Predictive Value of Localized Stenosis of the Main Pancreatic Duct for Early Detection of Pancreatic Cancer. Clin Endosc 2019; 52:588-597. [PMID: 31744269 PMCID: PMC6900300 DOI: 10.5946/ce.2019.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 03/07/2019] [Indexed: 01/21/2023] Open
Abstract
Background/Aims: In this study, we aimed to evaluate the predictive value of localized stenosis of the main pancreatic duct (MPD) for early detection of pancreatic cancer.
Methods: Among 689 patients who underwent endoscopic retrograde pancreatography from January 2008 to September 2018, 19 patients with MPD findings were enrolled. These patients showed findings for indicating suspicious pancreatic cancer at an early stage (FiCE); FiCE was defined as a single, localized stenosis in the MPD without a detectable mass (using any other imaging methods) and without other pancreatic diseases, such as definite chronic pancreatitis, intraductal papillary mucinous neoplasm, and autoimmune pancreatitis. Final diagnoses were established by examining resected specimens or through follow-up examinations after an interval of >5 years.
Results: Among 19 patients with FiCE, 11 underwent surgical resection and 8 were evaluated after a >5-year observation period. The final diagnosis of the MPD stenosis was judged to be pancreatic cancer in 9 patients (47%), including 3 with intraepithelial cancer, and to be a non-neoplastic change in 10. The sensitivity, specificity, and accuracy of preoperative pancreatic juice cytology were 75%, 100%, and 88%, respectively.
Conclusions: The predictive value of FiCE for pancreatic cancer prevalence was 47%. Histological confirmation with pancreatic juice cytology is necessary before surgical resection.
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Affiliation(s)
- Yoshihide Kanno
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Shinsuke Koshita
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Takahisa Ogawa
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Hiroaki Kusunose
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Kaori Masu
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Toshitaka Sakai
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Keisuke Yonamine
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Yujiro Kawakami
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Yuki Fujii
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Kazuaki Miyamoto
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Toji Murabayashi
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Fumisato Kozakai
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Jun Horaguchi
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan.,Department of Gastroenterology, Natori Chuo Clinic, Sendai, Japan
| | - Yutaka Noda
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
| | - Masaya Oikawa
- Department of Gastroenterological Surgery, Sendai City Medical Center, Sendai, Japan
| | - Takaho Okada
- Department of Gastroenterological Surgery, Sendai City Medical Center, Sendai, Japan
| | - Kei Ito
- Department of Gastroenterology, Sendai City Medical Center, Sendai, Japan
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26
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Matsuda Y. Age-related morphological changes in the pancreas and their association with pancreatic carcinogenesis. Pathol Int 2019; 69:450-462. [PMID: 31339204 DOI: 10.1111/pin.12837] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2019] [Accepted: 06/26/2019] [Indexed: 12/14/2022]
Abstract
Age-related pathological changes in the pancreas have been unclear because they are often minor and nonspecific. However, recent studies have shown that they are closely related to various pathological conditions such as pancreatic cancer and diabetes mellitus. Knowledge of age-related changes is important to determine appropriate prevention, detection, and treatment strategies for various diseases observed in elderly patients. We present a review of the pathological age-related non-neoplastic changes in the exocrine pancreas such as pancreatic fatty replacement, lobulocentric pancreatic atrophy, pancreatic duct ectasia, and metaplasia of exocrine pancreas, as well as changes in islet cells. We have discussed common pancreatic neoplasms in elderly patients, such as pancreatic intraepithelial neoplasia (PanIN), intraductal papillary mucinous neoplasms (IPMNs), and pancreatic ductal adenocarcinoma (PDAC). Age-related pathological changes play a key role in pancreatic carcinogenesis via telomere dysfunction. Further studies are warranted to clarify molecular mechanisms of pancreatic carcinogenesis in elderly patients.
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Affiliation(s)
- Yoko Matsuda
- Department of Pathology and Host-Defense, Faculty of Medicine, Kagawa University, Kagawa, Japan
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27
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Roles of ERCP in the Early Diagnosis of Pancreatic Cancer. Diagnostics (Basel) 2019; 9:diagnostics9010030. [PMID: 30866585 PMCID: PMC6468574 DOI: 10.3390/diagnostics9010030] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 03/04/2019] [Accepted: 03/05/2019] [Indexed: 02/07/2023] Open
Abstract
It has been reported that endoscopic retrograde cholangiopancreatography (ERCP) is of value in evaluating precise pancreatograms of the pancreatic duct (PD). Recently, institutions have tended to perform magnetic resonance cholangiopancreatography (MRCP) for the diagnosis of PD due to post-ERCP pancreatitis (PEP). In small pancreatic cancer (PC), including PC in situ (PCIS) which is undetectable on cross sectional images, endoscopic ultrasonography (EUS) and MRCP serve important roles in detecting local irregular stenosis of the PD or small cystic lesions. Subsequently, ERCP and associated serial pancreatic juice aspiration cytologic examination (SPACE) obtained by endoscopic nasopancreatic drainage (ENPD) may be useful in the diagnosis of very early-stage PC. Further prospective multicenter studies are required to establish a standard method of SPACE for the early diagnosis of PC.
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28
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Proposal for Endoscopic Ultrasonography Classification for Small Pancreatic Cancer. Diagnostics (Basel) 2019; 9:diagnostics9010015. [PMID: 30678056 PMCID: PMC6468688 DOI: 10.3390/diagnostics9010015] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 01/18/2019] [Accepted: 01/18/2019] [Indexed: 12/21/2022] Open
Abstract
Backgrounds: Endoscopic ultrasonography (EUS) is used to observe the stricture of the main pancreatic duct (MPD) and in diagnosing pancreatic cancer (PC). We investigate the findings on EUS by referring to the histopathological findings of resected specimens. Materials and Methods: Six patients with carcinoma in situ (CIS) and 30 patients with invasive carcinoma of 20 mm or less were included. The preoperative EUS findings were classified as follows. A1: Simple stricture type—no findings around the stricture; A2: Hypoecho stricture type—localized hypoechoic area without demarcation around the stricture; A3: Tumor stricture type—tumor on the stricture; B: Dilation type—the dilation of the pancreatic duct without a downstream stricture; C: Parenchymal tumor type—tumor located apart from the MPD. Results: Classes A1 and A2 consisted of 2 CISs, and 4 invasive carcinomas included two cases smaller than 5 mm in diameter. Most of the cancers classified as A3 or C were of invasive carcinoma larger than 5 mm in diameter. All cancers classified as B involved CIS. Serial pancreatic-juice aspiration cytologic examination (SPACE) was selected for all types of cases, with a sensitivity of 92.0%, while EUS-guided fine needle aspiration cytology (EUS-FNA) was only useful for invasive carcinoma, and its sensitivity was 66.7%. Conclusions: Stricture without a tumor could be a finding for invasive PC and pancreatic duct dilation without a downstream stricture could be a finding indicative of CIS. Carcinoma smaller than 5 mm in diameter could not be recognized by EUS. SPACE had a high sensitivity for diagnosing small PC.
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29
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Hyder Q, Khh H. Diagnostic significance of SPACE for PCIS. Clin J Gastroenterol 2018; 11:257-258. [DOI: 10.1007/s12328-018-0836-6] [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: 11/01/2017] [Accepted: 01/12/2018] [Indexed: 11/24/2022]
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Zhang L, Sanagapalli S, Stoita A. Challenges in diagnosis of pancreatic cancer. World J Gastroenterol 2018; 24:2047-2060. [PMID: 29785074 PMCID: PMC5960811 DOI: 10.3748/wjg.v24.i19.2047] [Citation(s) in RCA: 305] [Impact Index Per Article: 50.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 04/28/2018] [Accepted: 05/11/2018] [Indexed: 02/06/2023] Open
Abstract
Pancreatic cancer is a growing source of cancer related death, yet has poor survival rates which have not improved in the last few decades. Its high mortality rate is attributed to pancreatic cancer biology, difficulty in early diagnosis and the lack of standardised international guidelines in assessing suspicious pancreatic masses. This review aims to provide an update in the current state of play in pancreatic cancer diagnosis and to evaluate the benefits and limitations of available diagnostic technology. The main modalities discussed are imaging with computed tomography, magnetic resonance imaging, endoscopic ultrasound and positron emission tomography and tissue acquisition with fine needle aspiration. We also review the improvements in the techniques used for tissue acquisition and the opportunity for personalised cancer medicine. Screening of high risk individuals, promising biomarkers and common mimickers of pancreatic cancer are also explored, as well as suggestions for future research directions to allow for earlier detection of pancreatic cancer. Timely and accurate diagnosis of pancreatic cancer can lead to improvements in the current poor outcome of this disease.
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Affiliation(s)
- Lulu Zhang
- Department of Gastroenterology, St. Vincent’s Hospital Sydney, Darlinghurst 2010, NSW, Australia
| | - Santosh Sanagapalli
- Department of Gastroenterology, St. Vincent’s Hospital Sydney, Darlinghurst 2010, NSW, Australia
| | - Alina Stoita
- Department of Gastroenterology, St. Vincent’s Hospital Sydney, Darlinghurst 2010, NSW, Australia
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Ikemoto J, Hanada K, Minami T, Okazaki A, Abe T, Amano H, Yonehara S. Prospective Follow-up Study of the Recurrence of Pancreatic Cancer Diagnosed at an Early Stage: The Value of Endoscopic Ultrasonography for Early Diagnosis of Recurrence in the Remnant Pancreas. Pancreas 2018. [PMID: 29517631 DOI: 10.1097/mpa.0000000000001021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
OBJECTIVES Most patients with pancreatic cancer (PC) demonstrate recurrences in the form of metastatic disease. We prospectively evaluated recurrence in PC cases diagnosed at an early stage. METHODS Thirty cases of PC stage 0 or IA were prospectively followed for at least 1 year after initial surgery. We performed blood tests and contrast-enhanced computed tomography (CT) every 3 to 6 months. Endoscopic ultrasonography (EUS) was performed if CT revealed abnormal findings in the remnant pancreas (RP). RESULTS The median follow-up period was 53.9 months. Pancreatic cancer recurred in the RP (n = 8) and liver (n = 1). Computed tomography revealed mass lesions in 5 cases, a cystic lesion in 2 cases, and pancreatic duct dilatation in 1 case. Endoscopic ultrasonography detected mass lesions in 3 cases without a detectable mass on CT. The sensitivity of EUS-guided fine-needle aspiration and pancreatic juice cytology was 75%. Five of 8 cases underwent total resection of the RP, with pathologic findings revealing stage IA in 1 case, stage II in 1 case, and stage III in 3 cases. CONCLUSIONS Careful long-term follow-up including EUS should be performed in resected PC cases diagnosed at an early stage to check recurrence in the RP.
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Kikuyama M, Kamisawa T, Kuruma S, Chiba K, Kawaguchi S, Terada S, Satoh T. Early Diagnosis to Improve the Poor Prognosis of Pancreatic Cancer. Cancers (Basel) 2018; 10:cancers10020048. [PMID: 29439461 PMCID: PMC5836080 DOI: 10.3390/cancers10020048] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2018] [Revised: 01/25/2018] [Accepted: 02/02/2018] [Indexed: 12/12/2022] Open
Abstract
Pancreatic cancer (PC) has a poor prognosis due to delayed diagnosis. Early diagnosis is the most important factor for improving prognosis. For early diagnosis of PC, patients with clinical manifestations suggestive of PC and high risk for developing PC need to be selected for examinations for PC. Signs suggestive of PC (e.g., symptoms, diabetes mellitus, acute pancreatitis, or abnormal results of blood examinations) should not be missed, and the details of risks for PC (e.g., familial history of PC, intraductal mucin producing neoplasm, chronic pancreatitis, hereditary pancreatitis, or life habit) should be understood. Multidetector computed tomography (MDCT) and magnetic resonance imaging (MRI) can be performed for diagnosing PC, but the diagnostic ability of these examinations for PC is limited. Endoscopic diagnostic procedures, such as endoscopic ultrasonography, including fine-needle aspiration, and endoscopic retrograde pancreatocholangiography, including Serial Pancreatic-juice Aspiration Cytologic Examination (SPACE), could be recommended for a detailed examination to diagnose pancreatic carcinoma earlier.
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Affiliation(s)
- Masataka Kikuyama
- Department of Gastroenterology, Tokyo Metropolitan Cancer and Infectious Disease Center Komagome Hospital, 3-18-22, Honkomagome, Bunkyo-ku, Tokyo 113-8677, Japan.
| | - Terumi Kamisawa
- Department of Gastroenterology, Tokyo Metropolitan Cancer and Infectious Disease Center Komagome Hospital, 3-18-22, Honkomagome, Bunkyo-ku, Tokyo 113-8677, Japan.
| | - Sawako Kuruma
- Department of Gastroenterology, Tokyo Metropolitan Cancer and Infectious Disease Center Komagome Hospital, 3-18-22, Honkomagome, Bunkyo-ku, Tokyo 113-8677, Japan.
| | - Kazuro Chiba
- Department of Gastroenterology, Tokyo Metropolitan Cancer and Infectious Disease Center Komagome Hospital, 3-18-22, Honkomagome, Bunkyo-ku, Tokyo 113-8677, Japan.
| | - Shinya Kawaguchi
- Department of Gastroenterology, Shizuoka General Hospital, Shizuoka 420-8527, Japan.
| | - Shuzo Terada
- Department of Gastroenterology, Shizuoka General Hospital, Shizuoka 420-8527, Japan.
| | - Tatsunori Satoh
- Department of Gastroenterology, Shizuoka General Hospital, Shizuoka 420-8527, Japan.
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