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Vasas B, Fábián A, Bősze Z, Hamar S, Kaizer L, Tóth T, Bacsur P, Resál T, Bálint A, Farkas K, Molnár T, Szepes Z, Bor R. Comparison of risk of malignancy and predictive value of diagnostic categories defined by Papanicolaou Society of Cytopathology system and WHO reporting system for pancreaticobiliary cytopathology in solid pancreatic lesions. Therap Adv Gastroenterol 2024; 17:17562848241271958. [PMID: 39377014 PMCID: PMC11457282 DOI: 10.1177/17562848241271958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Accepted: 06/25/2024] [Indexed: 10/09/2024] Open
Abstract
Background The standardized diagnostic categories defined by the World Health Organization (WHO) reporting system support the interdisciplinary interpretation of cytological findings in the management of pancreatic cancer. Objective To compare this classification to the Papanicolaou Society of Cytopathology (PSC) system in terms of predictive value and risk of malignancy (ROM) in solid pancreatic lesions. Design Retrospective cohort study. Methods All consecutive patients with solid pancreatic lesions who underwent endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) sampling at the University of Szeged from 2014 to 2021 were retrospectively enrolled. The predictive value and ROM of cytological findings were determined with comparison to histologic outcome and/or clinical follow-up. Results A total of 521 EUS-FNAs were performed with a malignancy rate of 81.76%. In both classification systems, the absolute ROM of "non-diagnostic," "negative for malignancy," "atypical," "suspicious for malignancy," and "malignant" categories were 48.2%, 2.3%, 78.1%, 100.0%, and 99.4%, respectively. Despite the heterogeneous nature of the "neoplastic: other" category of the PSC system, the absolute ROM for solid lesions was 100%. Pancreatic neoplasm: high-risk/grade category including only two endosonographically solid cases of high-grade intraductal papillary mucinous neoplasms showed 100% ROM. There were no differences between PSC and WHO systems in sensitivity, specificity, and negative and positive predictive values: excluding the "atypical" category, these were 99.7%, 95.6%, 97.7%, and 99.5%, respectively. The "atypical" category considered benign resulted in a higher decrease in validity and negative predictive value, compared to "atypical" considered true malignant (93.6% vs 97.7% and 65.8% vs 97.7%). Conclusion For solid pancreatic lesions, the WHO system was identical to the PSC system in terms of ROM and predictive values.
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Affiliation(s)
- Béla Vasas
- Department of Pathology, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Anna Fábián
- Department of Internal Medicine, Center for Gastroenterology, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Zsófia Bősze
- Department of Internal Medicine, Center for Gastroenterology, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Sándor Hamar
- Department of Pathology, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - László Kaizer
- Department of Pathology, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Tibor Tóth
- Department of Internal Medicine, Center for Gastroenterology, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Péter Bacsur
- Department of Internal Medicine, Center for Gastroenterology, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Tamás Resál
- Department of Internal Medicine, Center for Gastroenterology, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Anita Bálint
- Department of Internal Medicine, Center for Gastroenterology, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Klaudia Farkas
- Department of Internal Medicine, Center for Gastroenterology, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Tamás Molnár
- Department of Internal Medicine, Center for Gastroenterology, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Zoltán Szepes
- Department of Internal Medicine, Center for Gastroenterology, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Renáta Bor
- Department of Internal Medicine, Center for Gastroenterology, Albert Szent-Györgyi Clinical Center, University of Szeged, Kálvária sgt. 57, Szeged 6725, Hungary
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Pham AT, Dang QH, Dang KK, Nguyen ATM, Truong CM, Nguyen KT. Extrahepatic biliary tract tuberculosis: A case report and literature review. Int J Surg Case Rep 2024; 118:109602. [PMID: 38608518 PMCID: PMC11017269 DOI: 10.1016/j.ijscr.2024.109602] [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: 02/16/2024] [Revised: 03/27/2024] [Accepted: 03/30/2024] [Indexed: 04/14/2024] Open
Abstract
INTRODUCTION Tuberculosis is a chronic infectious disease that often has a latent period after the initial infection. Tuberculosis most often affects the lungs but it can also affect other parts of the body. Vietnam is in pandemic area of tuberculosis. CASE REPORT We present a rare case of a 42-year-old male patient admitted to the hospital with a history of progressive jaundice. Magnetic resonance imaging (MRI) revealed a 26 × 33 mm tuberculous mass located at the intersection between the cystic duct and the common hepatic duct, leading to dilation of the intrahepatic biliary ducts on both sides. Initially diagnosed with a Klatskin type II tumor, the patient underwent surgery to remove the mass and create a biliary-enteric anastomosis. However, the pathological report of the postoperative specimens concluded a diagnosis of necrotizing granulomatous inflammation caused by tuberculosis. CASE DISCUSSION Obstructive jaundice secondary to tuberculosis is a rare condition that can be caused due to the tuberculous enlargement of the pancreatic head, tuberculous lymphadenitis, tuberculous biliary strictures, or a tuberculous retroperitoneal mass. Extrapulmonary tuberculosis usually results from hematogenous dissemination or contiguous spread from adjacent organs. Symptoms vary depending on the affected organ but typically include fever, fatigue, and weight loss. Hepatobiliary tuberculosis is usually secondary to pulmonary or gastrointestinal tuberculosis. CONCLUSION Hepatobiliary tuberculosis is a rare disease that affects the liver and bile duct system. It is difficult to diagnose because it does not have any specific symptoms and can be easily misdiagnosed with other diseases.
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Affiliation(s)
- Anh The Pham
- Department of Hepatobiliary Surgery, Vietnam National Cancer Hospital, Hanoi 100000, Viet Nam
| | | | - Khue Kim Dang
- College of Health Sciences, VinUniversity, Hanoi, 100000, Viet Nam.
| | - An Thi My Nguyen
- College of Health Sciences, VinUniversity, Hanoi, 100000, Viet Nam
| | - Cuong Manh Truong
- Department of Hepatobiliary Surgery, Vietnam National Cancer Hospital, Hanoi 100000, Viet Nam
| | - Khuyen Thi Nguyen
- Department of Pathology, Vietnam National Cancer Hospital, Hanoi 100000, Viet Nam
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3
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Khan F, Shahid J, Saleem A, Khawaja UA, Memon WA, Zafar U, Hameed TA, Abbasher Hussien Mohamed Ahmed K. IgG4-related inflammatory pancreatic head pseudotumor mirrors pancreatic head tumor: A novel case series with a review of the literature. Clin Case Rep 2024; 12:e8467. [PMID: 38317667 PMCID: PMC10839121 DOI: 10.1002/ccr3.8467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 01/12/2024] [Accepted: 01/19/2024] [Indexed: 02/07/2024] Open
Abstract
Key Clinical Message In this noteworthy case series regarding pancreatic pseudo tumors, we intend to spread knowledge among physicians for the diagnostic and therapeutic approach and eventual disease prognosis. Abstract Inflammatory pseudotumor of pancreatic head greatly mimics pancreatic head tumor. One of them is IgG4-related pancreatic disease, which is commonly mistaken as neoplastic disease on imaging. In our novel case series, we report three cases of IgG4-related pancreatic head pseudotumor with patients ranging from 35 to 72 years of age. Patients presented with jaundice and abdominal pain. Alongside initial laboratory workup, abdominal CTs and serum IgG4 levels were also obtained. Imaging features in conjunction with IgG4 levels confirmed the diagnosis of IgG4-related autoimmune pancreatitis. Pancreatic pseudotumors are notorious for being often reported as real tumors. Through our noteworthy case series, we intend to highlight the imaging features and laboratory markers that are crucial in such cases to avoid invasive procedures.
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Affiliation(s)
- Faheemullah Khan
- Department of RadiologyAga Khan University HospitalKarachiPakistan
| | - Jehanzeb Shahid
- Department of RadiologyAga Khan University HospitalKarachiPakistan
| | - Amna Saleem
- Jinnah Medical and Dental CollegeKarachiPakistan
| | | | | | - Uffan Zafar
- Department of RadiologyAga Khan University HospitalKarachiPakistan
| | - Tariq Abdul Hameed
- Department of RadiologyIndiana University School of MedicineIndianapolisIndianaUSA
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4
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Ukegjini K, Steffen T, Tarantino I, Jonas JP, Rössler F, Petrowsky H, Gubler C, Müller PC, Oberkofler CE. Systematic review on groove pancreatitis: management of a rare disease. BJS Open 2023; 7:zrad094. [PMID: 37749756 PMCID: PMC10519812 DOI: 10.1093/bjsopen/zrad094] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 07/12/2023] [Accepted: 08/08/2023] [Indexed: 09/27/2023] Open
Abstract
BACKGROUND Groove pancreatitis is a focal form of chronic pancreatitis affecting the area of the paraduodenal groove. The aim of this systematic review was to assess the clinical presentation, diagnosis and treatment of patients with groove pancreatitis. METHODS Medical literature databases (Embase, Medline via PubMed and Cochrane Central Register of Controlled Trials) were systematically searched for data recorded between 1 January 1990 and 31 August 2022 regarding patient characteristics, diagnosis, surgical treatment and outcomes. The following inclusion criteria were applied: RCTs, observational studies (cohort and case-control studies) and case studies with >3 cases including patients with groove pancreatitis undergoing medical, endoscopic or surgical treatment with available clinical and diagnostic data. Fisher's exact test for binary data and Mann-Whitney U test or Student t-test for continuous data were adopted for statistical analysis. RESULTS Of 649 studies, 44 were included, involving reports on 1404 patients with a mean age of 49 years. In 41 of the 44 studies in which patient gender was described, 86 per cent (N = 1023) of patients were male. Information on the risk factors of alcohol and nicotine was available in 37 and 23 studies, respectively. Seventy-nine per cent (N = 886) of patients had a history of excessive alcohol consumption and 83 per cent (N = 595) were smokers. Information on clinical symptoms was available in 37 of the 44 included studies and 78.5 per cent (N = 870) presented with abdominal pain. Some 27 studies comprising 920 groove pancreatitis patients were treatment oriented. Seventy-four per cent (N = 682) of patients were treated conservatively, 26.4 per cent (N = 134) underwent endoscopic treatment and 54.7 per cent (N = 503) required surgery. There was complete relief of symptoms in 35.6 per cent (N = 243) after conservative treatment, 55.2 per cent (N = 74) after endoscopic treatment and 69.6 per cent (N = 350) after surgical treatment. The median follow-up time was 42 months (range, 1-161 months). CONCLUSION Groove pancreatitis shows on imaging a typical triad: cystic lesions in the pancreatic duct or duodenal wall, calcifications, and thickenings of the duodenal wall. Surgery appears to be the most effective treatment modality.
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Affiliation(s)
- Kristjan Ukegjini
- Department of Surgery and Transplantation, Swiss HPB & Transplant Center Zurich, University Hospital Zurich, Zürich, Switzerland
- Department of Surgery, Kantonsspital St. Gallen, St. Gallen, Switzerland
| | - Thomas Steffen
- Department of Surgery, Kantonsspital St. Gallen, St. Gallen, Switzerland
| | - Ignazio Tarantino
- Department of Surgery, Kantonsspital St. Gallen, St. Gallen, Switzerland
| | - Jan P Jonas
- Department of Surgery and Transplantation, Swiss HPB & Transplant Center Zurich, University Hospital Zurich, Zürich, Switzerland
| | - Fabian Rössler
- Department of Surgery and Transplantation, Swiss HPB & Transplant Center Zurich, University Hospital Zurich, Zürich, Switzerland
| | - Henrik Petrowsky
- Department of Surgery and Transplantation, Swiss HPB & Transplant Center Zurich, University Hospital Zurich, Zürich, Switzerland
| | - Christoph Gubler
- Department of Gastroenterology and Hepatology, Stadtspital Zürich, Zurich, Switzerland
| | - Philip C Müller
- Department of Surgery and Transplantation, Swiss HPB & Transplant Center Zurich, University Hospital Zurich, Zürich, Switzerland
- Department of Surgery, Clarunis—University Centre for Gastrointestinal and Hepatopancreatobiliary Diseases, Basel, Switzerland
| | - Christian E Oberkofler
- Department of Surgery and Transplantation, Swiss HPB & Transplant Center Zurich, University Hospital Zurich, Zürich, Switzerland
- Vivévis AG—Visceral, Tumor and Robotic Surgery, Clinic Hirslanden Zurich, Zurich, Switzerland
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5
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Kim SR, Kim SK, Koma YI, Sasaki M, Asai A, Nishikawa H. Hepatic Inflammatory Pseudotumor-Focusing on Its Heterogeneity. Diagnostics (Basel) 2023; 13:2857. [PMID: 37685395 PMCID: PMC10486865 DOI: 10.3390/diagnostics13172857] [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: 07/31/2023] [Revised: 08/16/2023] [Accepted: 09/01/2023] [Indexed: 09/10/2023] Open
Abstract
Hepatic inflammatory pseudotumors (IPTs) are defined as benign, non-malignant, non-metastasizing tumors characterized by the presence of myofibroblastic spindle cells, hetorogenous populations of inflammatory cells, particularly plasma cells, lymphocytes and macrophages, as well as locations of fibrosis and necrosis without cellular anaplasia or atypical mitoses. Despite subsequent reports in the references, hepatic IPT remains difficult to diagnose; while posing major issues specifically for its differential diagnosis compared with that of other various benign diseases and malignant hepatic tumors. Histopathological findings are always a requisite for confirming the diagnosis, particularly given that the pathogenesis of IPT remains ambiguous to date. Hepatic IPT is a heterogeneous entity in terms of its clinical features, pathological findings, and pathogenesis. Once the diagnosis is confirmed, however, needless surgery such as wedge resection and lobectomy should be avoided. Here, we discuss the heterogeneity of hepatic IPT, its clinical features, pathological findings, and pathogenesis, and describe its differential diagnosis.
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Affiliation(s)
- Soo Ryang Kim
- Department of Gastroenterology, Kobe Asahi Hospital, Kobe 653-0801, Japan;
| | - Soo Ki Kim
- Department of Gastroenterology, Kobe Asahi Hospital, Kobe 653-0801, Japan;
| | - Yu-ichiro Koma
- Department of Pathology, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan
| | - Motoko Sasaki
- Department of Human Pathology, Kanazawa University Graduate School of Medicine, Kanazawa 920-8640, Japan
| | - Akira Asai
- The Second Department of Internal Medicine, Osaka Medical and Pharmaceutical University, Takatsuki 569-8686, Japan
| | - Hiroki Nishikawa
- The Second Department of Internal Medicine, Osaka Medical and Pharmaceutical University, Takatsuki 569-8686, Japan
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6
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Chen C, Lin X, Lin R, Huang H, Lu F. A high serum creatine kinase (CK)-MB-to-total-CK ratio in patients with pancreatic cancer: a novel application of a traditional marker in predicting malignancy of pancreatic masses? World J Surg Oncol 2023; 21:13. [PMID: 36653771 PMCID: PMC9847085 DOI: 10.1186/s12957-023-02903-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 01/11/2023] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND The finding that some benign pancreatic masses mimic the imaging appearance of carcinomas poses a challenge for pancreatic surgeons. Preoperative markers that assist in the diagnosis are critical under this circumstance. Abnormal serum creatine kinase (CK) isozyme levels were reported in cancer patients, and this study aimed to explore the potential value of the CK-MB-to-total-CK ratio (CK ratio) in differentiating pancreatic cancer (PC) from benign masses when combined with carbohydrate antigen 19-9 (CA19-9). METHODS A total of 190 patients primarily diagnosed with pancreatic masses were retrospectively reviewed and assigned to the PC group and the benign pancreatic mass (BPM) group. Sixty-eight controls were enrolled for comparison. Levels of preoperative parameters, including total serum CK, CK-MB, absolute neutrophil count, absolute lymphocyte count, albumin, and CA19-9, were recorded as well as pathological information. A logistic regression model was established to assess the application value of the combination of CA19-9 and the CK ratio in diagnosis. Receiver operating characteristic (ROC) curves were constructed to evaluate the diagnostic value of the markers. RESULTS The CK ratio was significantly elevated in the PC group compared with the BPM group (P < 0.001). In the multivariate analysis, a CK ratio greater than 0.220 was a statistically significant variable for predicting malignancy of pancreatic masses (P=0.001). Patients with stage III/IV PC had a higher CK ratio than those with stage I/II PC (P<0.01). Combined detection of CA19-9 and the CK ratio produced an increased Youden index (0.739 vs. 0.815) with improved sensitivity (82.2% vs. 89.8%). CONCLUSIONS The CK ratio is elevated in patients with pancreatic adenocarcinoma and is an independent factor predicting pancreatic adenocarcinoma. The CK ratio augments the diagnostic capacity of CA19-9 in detecting malignancy.
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Affiliation(s)
- Cong Chen
- grid.411176.40000 0004 1758 0478Department of General Surgery, Fujian Medical University Union Hospital, Fuzhou, 350001 Fujian China
| | - Xianchao Lin
- grid.411176.40000 0004 1758 0478Department of General Surgery, Fujian Medical University Union Hospital, Fuzhou, 350001 Fujian China
| | - Ronggui Lin
- grid.411176.40000 0004 1758 0478Department of General Surgery, Fujian Medical University Union Hospital, Fuzhou, 350001 Fujian China
| | - Heguang Huang
- grid.411176.40000 0004 1758 0478Department of General Surgery, Fujian Medical University Union Hospital, Fuzhou, 350001 Fujian China
| | - Fengchun Lu
- grid.411176.40000 0004 1758 0478Department of General Surgery, Fujian Medical University Union Hospital, Fuzhou, 350001 Fujian China
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7
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Tanigawa M, Koga Y, Naito Y, Yamaguchi H, Iwasaki T, Kohashi K, Ohike N, Hanada K, Higashi M, Komatsu M, Imai H, Yamakita K, Nagakawa T, Okabe Y, Kato S, Noguchi H, Nakayama T, Yasuda M, Kusano H, Akiba J, Oda Y, Yano H. Pancreatic hamartoma: detection of harbouring NAB2-STAT6 fusion gene. Histopathology 2022; 81:319-328. [PMID: 35758200 DOI: 10.1111/his.14703] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Revised: 06/13/2022] [Accepted: 06/16/2022] [Indexed: 11/30/2022]
Abstract
AIM Hamartomas in the pancreas are rare and are often histologically and morphologically similar to solitary fibrous tumours (SFTs). We examined the differences between hamartomas and SFTs at the molecular level. METHODS AND RESULTS Thirteen patients histopathologically diagnosed with pancreatic hamartoma were included in the study. We also performed STAT6 immunohistochemistry (IHC), which is used in the diagnosis of SFT. Furthermore, for the three cases in which RNA was extracted, reverse transcription polymerase chain reaction to search for NAB2-STAT6 fusions was used. Macroscopically, 13 patients had well-demarcated tumour lesions. Histologically, no islets of Langerhans were observed in the lesions, acinar tissue and ducts were unevenly distributed, and elastic fibres were not observed around the ducts by Elastica Van Gieson staining. One case contained a lipomatous hamartoma composed mainly of adipose tissue. Seven of the 13 cases demonstrated expression of STAT6 in the nuclei of intervening spindle cells. NAB2-STAT6 fusions were observed in two of the three cases in which RNA was extracted. These two cases also demonstrated STAT6 expression in spindle cells using STAT6 IHC. In one case of lipomatous hamartoma, we did not confirm NAB2-STAT6 fusion or STAT6 expression in STAT6 IHC. CONCLUSION Of the 13 patients histopathologically diagnosed with hamartoma, two demonstrated NAB2-STAT6 fusions, suggesting the existence of pancreatic hamartomas with molecular-level components identical to those of SFT.
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Affiliation(s)
- Masahiko Tanigawa
- Department of Pathology, Kurume University School of Medicine, Kurume, Japan
| | - Yutaka Koga
- Department of Pathology, National Hospital Organization Kyushu Cancer Center, Fukuoka, Japan
| | - Yoshiki Naito
- Department of Pathology, Kurume University School of Medicine, Kurume, Japan.,Department of Diagnostic Pathology, Kurume University Hospital, Kurume, Japan
| | | | - Takeshi Iwasaki
- Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Kenichi Kohashi
- Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Nobuyuki Ohike
- Division of Pathology, Shizuoka, Cancer Center, Shizuoka, Japan
| | - Keiji Hanada
- Department of Gastroenterology, Onomichi General Hospital, Hiroshima, Japan
| | - Michiyo Higashi
- Department of Pathology, Field of Oncology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Masato Komatsu
- Department of Diagnostic Pathology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Hiroshi Imai
- Pathology Division, Mie University Hospital, Tsu, Japan
| | - Keisuke Yamakita
- Division of Metabolism and Biosystemic Science, Gastroenterology, and Hematology/Oncology, Department of Medicine, Asahikawa Medical University, Asahikawa, Japan
| | - Tatsuya Nagakawa
- Department of Gastroenterology, Sapporo-Kosei General Hospital, Sapporo, Japan
| | - Yoshinobu Okabe
- Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Seiya Kato
- Division of Pathology, Saiseikai Fukuoka General Hospital, Fukuoka, Japan
| | - Hirotsugu Noguchi
- Department of Pathology, Field of Oncology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan
| | - Toshiyuki Nakayama
- Department of Pathology, University of Occupational and Environmental Health, Japan, Kitakyushu, Japan
| | - Masanori Yasuda
- Department of Pathology, Saitama Medical University International Medical Center, Hidaka, Japan
| | - Hironori Kusano
- Department of Pathology, Kurume University School of Medicine, Kurume, Japan
| | - Jun Akiba
- Department of Diagnostic Pathology, Kurume University Hospital, Kurume, Japan
| | - Yoshinao Oda
- Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Hirohisa Yano
- Department of Pathology, Kurume University School of Medicine, Kurume, Japan
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8
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Geiselmann MT, Acampa DJ, Melamed J, Arif F, Takabe K, Seitelman E, Datta R, Gunasekaran G, Takahashi H. Immunoglobulin G4-Negative Inflammatory Pseudotumors of the Pancreas. World J Oncol 2022; 12:240-245. [PMID: 35059084 PMCID: PMC8734500 DOI: 10.14740/wjon1432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 11/25/2021] [Indexed: 11/11/2022] Open
Abstract
Inflammatory pseudotumor (IPT) can occur in any organ, but rarely shows pancreatic involvement. While surgical excision has been recommended as the primary treatment for IPT of the pancreas in the past, some authors suggest observation while medical management often results in regression. Corticosteroids, nonsteroidal anti-inflammatory drugs and immunosuppressive therapy have been used to treat IPTs. Spontaneous regression has also been reported in IPT managed without surgical intervention. A 62-year-old female was evaluated for worsening abdominal pain and a mass in the neck of the pancreas that was identified on ultrasound. Further imaging with magnetic resonance imaging revealed a pancreatic mass with dilated pancreatic duct and an atrophic parenchyma of the pancreatic neck. Her serum tumor markers were not elevated. As this lesion appeared to be resectable pancreatic cancer based on cross-sectional imaging, no biopsy was performed prior to surgical resection. Distal pancreatectomy and splenectomy was recommended and the patient desired to proceed. Her recovery was uneventful with no postoperative complications, including pancreatic fistula. Final pathology revealed a lesion consistent with the diagnosis of immunoglobulin G4 (IgG4)-negative IPT without neoplasm. IPT of the pancreas is a difficult entity to diagnose and treat due to clinical and imaging characteristics closely resembling pancreatic adenocarcinoma. Biopsy with immunohistochemical analysis can be useful in diagnosing IPT; however, symptomatic lesions and concerning findings on cross-sectional imaging may warrant more definitive surgical intervention.
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Affiliation(s)
- Matthew T Geiselmann
- New York Institute of Technology, College of Osteopathic Medicine, Old Westbury, NY, USA.,Both authors contributed equally
| | - Daniel J Acampa
- New York Institute of Technology, College of Osteopathic Medicine, Old Westbury, NY, USA.,Both authors contributed equally
| | - Joshua Melamed
- Department of Surgery, Mount Sinai South Nassau, Oceanside, NY, USA
| | - Farzana Arif
- Department of Pathology, Mount Sinai South Nassau, Oceanside, NY, USA
| | - Kazuaki Takabe
- Department of Surgical Oncology, Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA.,Department of Surgery, University at Buffalo Jacobs School of Medicine and Biomedical Sciences, the State University of New York, Buffalo, NY, USA.,Department of Breast Surgery and Oncology, Tokyo Medical University, Tokyo, Japan.,Department of Surgery, Yokohama City University, Yokohama, Japan.,Department of Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Eric Seitelman
- Department of Surgery, Mount Sinai South Nassau, Oceanside, NY, USA
| | - Rajiv Datta
- Department of Surgery, Mount Sinai South Nassau, Oceanside, NY, USA
| | - Ganesh Gunasekaran
- Department of Surgery, Mount Sinai South Nassau, Oceanside, NY, USA.,Department of Surgery, Division of HPB Surgery, Mount Sinai Hospital, New York, NY, USA
| | - Hideo Takahashi
- Department of Surgery, Mount Sinai South Nassau, Oceanside, NY, USA
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9
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Luchini C, Fassan M, Doglioni C, Capelli P, Ingravallo G, Renzulli G, Pecori S, Paolino G, Florena AM, Scarpa A, Zamboni G. Inflammatory and tumor-like lesions of the pancreas. Pathologica 2021; 112:197-209. [PMID: 33179622 PMCID: PMC7931580 DOI: 10.32074/1591-951x-168] [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: 07/07/2020] [Accepted: 07/07/2020] [Indexed: 12/12/2022] Open
Abstract
Inflammatory/tumor-like lesions of the pancreas represent a heterogeneous group of diseases that can variably involve the pancreatic gland determining different signs and symptoms. In the category of inflammatory/tumor-like lesions of the pancreas, the most important entities are represented by chronic pancreatitis, which includes alcoholic, obstructive and hereditary pancreatitis, paraduodenal (groove) pancreatitis, autoimmune pancreatitis, lymphoepithelial cyst, pancreatic hamartoma and intrapancreatic accessory spleen. An in-depth knowledge of such diseases is essential, since they can cause severe morbidity and may represent a potential life-threatening risk for patients. Furthermore, in some cases the differential diagnosis with malignant tumors may be challenging. Herein we provide a general overview of all these categories, with the specific aim of highlighting their most important clinic-pathological hallmarks to be used in routine diagnostic activities and clinical practice.
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Affiliation(s)
- Claudio Luchini
- Department of Diagnostics and Public Health, Section of Pathology, University and Hospital Trust of Verona, Verona, Italy
| | - Matteo Fassan
- Surgical Pathology Unit, Department of Medicine (DIMED), University of Padua, Italy
| | - Claudio Doglioni
- Vita e Salute University, Milan, Italy.,Pathology Unit, Pancreas Translational and Clinical Research Center, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Paola Capelli
- Department of Diagnostics and Public Health, Section of Pathology, University and Hospital Trust of Verona, Verona, Italy
| | - Giuseppe Ingravallo
- Department of Emergency and Organ Transplantation, Section of Pathological Anatomy, University of Bari Aldo Moro, Bari, Italy
| | - Giuseppina Renzulli
- Department of Emergency and Organ Transplantation, Section of Pathological Anatomy, University of Bari Aldo Moro, Bari, Italy
| | - Sara Pecori
- Department of Diagnostics and Public Health, Section of Pathology, University and Hospital Trust of Verona, Verona, Italy
| | - Gaetano Paolino
- Department of Diagnostics and Public Health, Section of Pathology, University and Hospital Trust of Verona, Verona, Italy
| | - Ada M Florena
- Department of Sciences for Promotion of Health and Mother and Child Care, Anatomic Pathology, University of Palermo, Italy
| | - Aldo Scarpa
- Department of Diagnostics and Public Health, Section of Pathology, University and Hospital Trust of Verona, Verona, Italy.,ARC-NET Research Centre, University of Verona, Verona, Italy
| | - Giuseppe Zamboni
- Department of Diagnostics and Public Health, Section of Pathology, University and Hospital Trust of Verona, Verona, Italy.,IRCSS Sacro Cuore Don Calabria Hospital, Negrar, Italy
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10
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Aydin Mericöz C, Hacihasanoglu E, Muraki T, Pehlivanoglu B, Memis B, Mittal P, Polito H, Saka B, Everett R, Sarmiento J, Kooby D, Maithel SK, Erkan M, Basturk O, Reid MD, Adsay V. Evaluation and Pathologic Classification of Choledochal Cysts: Clinicopathologic Analysis of 84 Cases From the West. Am J Surg Pathol 2021; 45:627-637. [PMID: 33481384 DOI: 10.1097/pas.0000000000001666] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Choledochal cyst (CC) is believed to be a mostly Asian disorder. As a clinically defined entity, its pathologic correlates are poorly characterized. Eighty-four resected CCs from the West were reanalyzed. After applying established Japanese criteria, 9/66 with available imaging were disqualified and 10/39 with preoperative cyst typing had to be recategorized. None had been diagnosed with, or evaluated for, pancreatobiliary maljunction, but on retrospective analysis of radiologic images, 12/66 were found to have pancreatobiliary maljunction. The clinical findings were: F/M=5.7; mean age, 48; most (77%) presented with abdominal pain; mean size, 2.9 cm; choledocholithiasis 11%. Gross/histologic examination revealed 3 distinct pathology-based categories: (I) Cystic dilatation of native ducts (81%). (II) Double bile duct (13%), almost all of which were found in women (10/11); all were diagnosed by pathologic examination, and not preoperative diagnosis. (III) Gastrointestinal (GI) duplication type (6%). Microscopic findings of the entire cohort included mucosal-predominant lymphoplasmacytic inflammation (50%), follicular cholangitis (7%), mucosal hyperplasia (43%; 13% with papillae), intestinal metaplasia (10%), BilIN-like hyperplasia (17%), erosion/ulceration (13%), and severe dysplasia-mimicking atypia including "detachment atypia" and micropapillary degeneration (11%). Carcinomatous changes were seen in 14 cases (17%) (high-grade dysplasia/carcinoma in situ in 7, intraductal papillary neoplasm 1, and invasive carcinoma 6); and 13/14 of these occurred in pathologic category I, all with cyst size >1 cm. In conclusion, diagnostic imaging guidelines used in Asia are not routinely used (but should be adopted) in the West. Pathologically, cases designated as CC are classifiable in 3 groups: category 1 (dilated native duct type), more prone to carcinomatous change; category 2, double-duct phenomenon (all but 1 being female in this study); and category 3, GI-type duplication. Overall, 17% of CCs show carcinomatous change (50% of them invasive). CC specimens should be carefully examined with this classification and submitted entirely for assessment of at-risk mucosa and cancerous transformation.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | - Mert Erkan
- Surgery, Koç University School of Medicine
- Koç University Research Center for Translational Medicine (KUTTAM), Istanbul, Turkey
| | - Olca Basturk
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY
| | | | - Volkan Adsay
- Departments of Pathology
- Koç University Research Center for Translational Medicine (KUTTAM), Istanbul, Turkey
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11
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Yamashita Y, Kitano M. Endoscopic ultrasonography for pancreatic solid lesions. J Med Ultrason (2001) 2019; 47:377-387. [PMID: 31385143 DOI: 10.1007/s10396-019-00959-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Accepted: 05/12/2019] [Indexed: 01/05/2023]
Abstract
The incidence and mortality rates of pancreatic cancer, which has a poor prognosis, are rising rapidly. Endoscopic ultrasonography (EUS) provides superior spatial resolution compared with other imaging modalities such as transabdominal ultrasound, computed tomography (CT), and magnetic resonance imaging (MRI), and it is considered among the most reliable and efficient diagnostic modalities for pancreatic diseases. In this review, we show that EUS is useful for detection of pancreatic solid lesions and staging of pancreatic cancer. EUS also plays an important role in screening patients with high-risk factors for pancreatic cancer. Although EUS is useful for detection of small pancreatic lesions, pancreatic lesions are difficult to characterize using this modality, because most pancreatic solid lesions appear hypoechoic on EUS. From this point of view, contrast-enhanced harmonic EUS (CH-EUS) plays an important role in the differential diagnosis of pancreatic lesions. EUS and CH-EUS are also useful for staging pancreatic cancer. Moreover, EUS-guided fine-needle aspiration (EUS-FNA) is superior to other modalities in terms of cytopathological diagnosis. Although EUS-FNA has a high diagnostic ability for pancreatic cancer, the combination of EUS-FNA and CH-EUS improves the diagnostic ability by decreasing the number of false-negative cases. Thus, conventional EUS, EUS-FNA, and CH-EUS are essential in clinical practice for the diagnosis of pancreatic solid lesions.
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Affiliation(s)
- Yasunobu Yamashita
- Second Department of Internal Medicine, 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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12
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Baião JM, Martins RM, Correia JG, Jordão D, Vieira Caroço T, Caetano Oliveira R, Agostinho PG, Ferrão H. Inflammatory Pseudotumor of the Pancreas Mimicking a Pancreatic Neoplasm. Case Rep Gastroenterol 2019; 13:245-252. [PMID: 31275087 PMCID: PMC6600032 DOI: 10.1159/000501064] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 05/18/2019] [Indexed: 12/24/2022] Open
Abstract
A 78-year-old woman was admitted to our hospital with a pancreatic tumor, incidentally discovered in an abdominal ultrasound exam. She was asymptomatic and without any previous personal pathological condition. The computed tomography (CT) and the magnetic resonance imaging (MRI) scan showed a mass lesion of 4 cm in diameter, located in the pancreatic body, conditioning the invasion of the splenic vein. The patient was admitted to surgery. During the laparotomy, we found a tumoral lesion highly suspicious of pancreatic neoplasia located in the transition of the head/body of the pancreas, with an invasion of the portal vein and several peri-regional lymph nodes. We performed biopsies of the pancreatic mass and lymphadenectomy of the peri-regional pancreatic lymph nodes. Histological analysis found an inflammatory pseudotumor of the head/body of the pancreas, without signals of malign epithelial neoplasm and also without criteria for immunoglobulin G4-related disease. During the follow-up, a PET/CT and MRI confirmed that the pancreatic lesion had disappeared without any treatment. Inflammatory pseudotumor of the pancreas is a rare entity not fully understood. Despite this, the administration of corticosteroids and immunosuppressive therapy could be taken into consideration as the disease carries a risk.
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Affiliation(s)
- José Miguel Baião
- Surgical Department, Instituto Português de Oncologia de Coimbra, Coimbra, Portugal
| | - Rui Miguel Martins
- Surgical Department, Instituto Português de Oncologia de Coimbra, Coimbra, Portugal
| | | | - Daniel Jordão
- Surgical Department, Instituto Português de Oncologia de Coimbra, Coimbra, Portugal
| | - Teresa Vieira Caroço
- Surgical Department, Instituto Português de Oncologia de Coimbra, Coimbra, Portugal
| | - Rui Caetano Oliveira
- Pathology Department, Centro de Diagnóstico Anatomo-Patológico (CEDAP), Coimbra, Portugal
| | - Paulo Gil Agostinho
- Radiology Department, Instituto Português de Oncologia de Coimbra, Coimbra, Portugal
| | - Henrique Ferrão
- Surgical Department, Instituto Português de Oncologia de Coimbra, Coimbra, Portugal
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13
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Lee JH, Min JH, Kim YK, Cha DI, Lee J, Park HJ, Ahn S. Usefulness of non-contrast MR imaging in distinguishing pancreatic ductal adenocarcinoma from focal pancreatitis. Clin Imaging 2019; 55:132-139. [PMID: 30818163 DOI: 10.1016/j.clinimag.2019.02.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 02/14/2019] [Accepted: 02/19/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND Accurate differentiation between pancreatic adenocarcinoma and focal pancreatitis is challenging. PURPOSE To investigate the usefulness of non-contrast MRI by comparing with multidetector row CT (MDCT) and gadoxetic acid-enhanced MRI in the discrimination of pancreatic ductal adenocarcinoma (PDAC) and focal pancreatitis (FP). MATERIALS AND METHODS This retrospective study included 187 patients (116 with PDACs and 71 with FP) who underwent gadoxetic acid-MRI and MDCT prior to surgical resection or biopsy. The MRI features of PDAC and FP were compared by two radiologists. Then, two observers independently reviewed the three imaging sets: MDCT, non-contrast MRI (T1-, T2-weighted, and diffusion-weighted images), and MRI with and without gadoxetic acid to determine the diagnostic performances of each imaging modality in the discrimination of PDAC and FP. RESULTS The significant features on non-contrast MRI for diagnosis of PDAC included peritumoral cyst, pancreatic duct cut-off, clear hypointensity on T1WI, and bile duct dilatation (P < 0.05). Presence of peritumoural cyst showed the highest odds ratio for predicting PDAC. Non-contrast MRI was superior to MDCT in differentiating PDAC from FP with regard to accuracy (84.5% vs 95.5% for observer 1; 85.8% vs. 96.0% for observer 2), sensitivity (83.6% vs. 98.3%; 84.5% vs 97.8%), and negative predictive value (76.3% vs. 97.0%; 77.6% vs 96.4%) (P < 0.05). We found similar diagnostic values between the non-contrast MRI and MRI with and without contrast (P > 0.05) for both observers. CONCLUSION Non-contrast MRI is better than MDCT and comparable to MRI with and without gadoxetic acid in differentiating PDAC from FP.
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Affiliation(s)
- Jeong Hyun Lee
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Ji Hye Min
- Department of Radiology, Chungnam National University Hospital, Chungnam National University College of Medicine, Daejeon, Republic of Korea
| | - Young Kon Kim
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
| | - Dong Ik Cha
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Jisun Lee
- Department of Radiology, Chungbuk National University Hospital, Cheongju, Republic of Korea
| | - Hyun Jeong Park
- Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Soohyun Ahn
- Department of Mathematics, Ajou University, Suwon, Republic of Korea
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Abstract
There are a few entities that account for most solid and cystic masses of the pancreas. The pancreas harbors a wide array of diseases, including adenocarcinoma, and its variants, such as anaplastic and adenosquamous carcinoma. Other neoplasms include acinar cell carcinoma, solid pseudopapillary tumor, and sarcomas. Benign lesions include hamartomas, hemangiomas, lymphangioma, and plasmacytoma. Isolated metastases include renal cell carcinoma, melanoma, and other carcinomas. Benign inflammatory conditions, such as autoimmune pancreatitis and groove pancreatitis can also mimic solid neoplasms of the pancreas.
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Affiliation(s)
- John A Stauffer
- Department of Surgery, Mayo Clinic, 4500 San Pablo Road South, Jacksonville, FL 32224, USA
| | - Horacio J Asbun
- Department of Surgery, Mayo Clinic, 4500 San Pablo Road South, Jacksonville, FL 32224, USA.
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Shah U, Goldstein AM, Gee MS, Deshpande V. Case 24-2017. An 8-Month-Old Girl with Fever and an Abdominal Mass. N Engl J Med 2017; 377:574-582. [PMID: 28792868 DOI: 10.1056/nejmcpc1616393] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Uzma Shah
- From the Departments of Pediatrics (U.S.), Pediatric Surgery (A.M.G.), Radiology (M.S.G.), and Pathology (V.D.), Massachusetts General Hospital, and the Departments of Pediatrics (U.S.), Surgery (A.M.G.), Radiology (M.S.G.), and Pathology (V.D.), Harvard Medical School - both in Boston
| | - Allan M Goldstein
- From the Departments of Pediatrics (U.S.), Pediatric Surgery (A.M.G.), Radiology (M.S.G.), and Pathology (V.D.), Massachusetts General Hospital, and the Departments of Pediatrics (U.S.), Surgery (A.M.G.), Radiology (M.S.G.), and Pathology (V.D.), Harvard Medical School - both in Boston
| | - Michael S Gee
- From the Departments of Pediatrics (U.S.), Pediatric Surgery (A.M.G.), Radiology (M.S.G.), and Pathology (V.D.), Massachusetts General Hospital, and the Departments of Pediatrics (U.S.), Surgery (A.M.G.), Radiology (M.S.G.), and Pathology (V.D.), Harvard Medical School - both in Boston
| | - Vikram Deshpande
- From the Departments of Pediatrics (U.S.), Pediatric Surgery (A.M.G.), Radiology (M.S.G.), and Pathology (V.D.), Massachusetts General Hospital, and the Departments of Pediatrics (U.S.), Surgery (A.M.G.), Radiology (M.S.G.), and Pathology (V.D.), Harvard Medical School - both in Boston
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16
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Surgery for pancreatic neoplasms: How accurate are our surgical indications? Surgery 2017; 162:112-119. [DOI: 10.1016/j.surg.2017.01.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 01/08/2017] [Accepted: 01/17/2017] [Indexed: 02/07/2023]
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17
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Marques S, Bispo M, Noia L. Intrapancreatic Accessory Spleen: A Diagnosis Not to Forget! Case Rep Gastroenterol 2016; 10:749-754. [PMID: 28100996 PMCID: PMC5216230 DOI: 10.1159/000452760] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 10/17/2016] [Indexed: 12/23/2022] Open
Abstract
A 69-year-old male patient was incidentally diagnosed with a 5-mm lesion in the pancreatic tail by endoscopic ultrasound (EUS). After contrast-enhanced EUS and EUS-elastography, all imaging features were highly suggestive of a benign pancreatic solid lesion such as an intrapancreatic accessory spleen (IPAS) or a benign neuroendocrine tumor. Interposition of the splenic artery precluded EUS-guided fine-needle aspiration (FNA). When an asymptomatic pancreatic mass is detected, IPAS diagnosis should be considered, and, if EUS-FNA is infeasible, contrast-enhanced EUS and EUS-elastography are useful tools to differentiate a pancreatic benign lesion as IPAS from a malignancy, with avoidance of unnecessary surgery.
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Affiliation(s)
- Susana Marques
- Department of Gastroenterology, Centro Hospitalar Lisboa Ocidental, Lisbon, Portugal
| | - Miguel Bispo
- Department of Gastroenterology, Centro Hospitalar Lisboa Ocidental, Lisbon, Portugal
| | - Lariño Noia
- Department of Gastroenterology, Hospital Clínico Universitario Santiago de Compostela, Santiago de Compostela, Spain
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18
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Abstract
Chronic pancreatitis is a debilitating condition often associated with severe abdominal pain and exocrine and endocrine dysfunction. The underlying cause is multifactorial and involves complex interaction of environmental, genetic, and/or other risk factors. The pathology is dependent on the underlying pathogenesis of the disease. This review describes the clinical, gross, and microscopic findings of the main subtypes of chronic pancreatitis: alcoholic chronic pancreatitis, obstructive chronic pancreatitis, paraduodenal ("groove") pancreatitis, pancreatic divisum, autoimmune pancreatitis, and genetic factors associated with chronic pancreatitis. As pancreatic ductal adenocarcinoma may be confused with chronic pancreatitis, the main distinguishing features between these 2 diseases are discussed.
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Chougule A, Bal A. IgG4-related inflammatory pseudotumor: A systematic review of histopathological features of reported cases. Mod Rheumatol 2016; 27:320-325. [PMID: 27416329 DOI: 10.1080/14397595.2016.1206241] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
OBJECTIVES There is marked inconsistency in reporting the key features of IgG4-related inflammatory pseudotumor (IPT) cases. We aimed to analyze the various aspects of IgG4-related IPTs and to test the performance of the consensus criteria for their diagnosis. METHODS PubMed database was searched for IgG4-related IPT cases. The data regarding patient demographics, clinical presentation, laboratory findings, histopathological features, and treatment response are extracted and are presented here in a descriptive manner. RESULTS The study included 40 papers describing the clinicopathological features of 83 IPTs in 80 patients. Seventeen cases were diagnosed on biopsies; while remaining were diagnosed on excision specimens. Among these, 50 cases were categorized as highly suggestive and 24 cases as probable for IgG4RD; while nine cases had insufficient histopathological evidence of IgG4RD. Two cases diagnosed on biopsies having insufficient evidence of IgG4RD showed partial or no response to steroids; while 12/14 cases (85.71%) diagnosed on biopsies that were histologically suggestive or probable for IgG4RD showed prompt response to steroids. CONCLUSION Many reports have not specifically mentioned the full histopathological findings of IgG4-related IPTs that may hinder in refining the diagnostic criteria of IgG4RD. The IgG4-related IPTs diagnosed on biopsies with requisite features showed prompt response to steroids indicating specificity of histopathological findings in predicting treatment response.
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Affiliation(s)
- Abhijit Chougule
- a Department of Histopathology , Post Graduate Institute of Medical Education and Research, (PGIMER) , Sector 12 , Chandigarh , India
| | - Amanjit Bal
- a Department of Histopathology , Post Graduate Institute of Medical Education and Research, (PGIMER) , Sector 12 , Chandigarh , India
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20
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Sánchez-Bueno F, Torres Salmerón G, de la Peña Moral J, Ortiz Ruiz E, Fuster Quiñonero M, Gutiérrez Zárate WV, Claver Valderas MA, Parrilla Paricio P. Groove pancreatitis vs. pancreatic adenocarcinoma: A review of 8 cases. Cir Esp 2016; 94:346-52. [PMID: 27048910 DOI: 10.1016/j.ciresp.2016.02.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Accepted: 02/11/2016] [Indexed: 01/20/2023]
Abstract
INTRODUCTION Groove pancreatitis (PS) is an uncommon clinical situation and radiologically it can mimic carcinoma of the periampullary area. The aim of this paper is to study a series of 8 patients who underwent surgery with preoperative diagnosis of pancreatic head mass and subsequent pathological diagnosis of PS. METHODS In our series, 6 were men and 2 women, with an average age of 51,9 years. Before surgery, all patients had epigastric abdominal pain requiring analgesia at high doses. The preoperative analytical CEA and Ca 19.9 were normal in all patients. Imaging studies showed intrapancreatic solid lesions in 6 of the 8 patients, and in the remaining 2 one papillary mass of 5 and 6cm, respectively, that caused stenosis in the duodenal luz. EUS neoplastic cells were negative in all patients. RESULTS The immediate postoperative evolution was satisfactory, there are no complications. In our series, no patients have died. The long-term follow-up, in 7 of the 8 patients, has been excellent with disappearance of abdominal pain and improvement of nutritional status. The remaining patient had frequent recurrent episodes of acute pancreatitis, and at 60 months, presented a pseudocyst that has required a Roux-en-Y cystojejunostomy. CONCLUSIONS PS must be included in the differential diagnosis of pancreatic lesions, which may include carcinoma of the periampullary area and other causes of chronic pancreatitis.
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Affiliation(s)
| | - Gloria Torres Salmerón
- Servicio de Cirugía, Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, España
| | - Jesús de la Peña Moral
- Servicio de Anatomía Patológica, Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, España
| | - Eduardo Ortiz Ruiz
- Servicio de Anatomía Patológica, Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, España
| | - Matilde Fuster Quiñonero
- Servicio de Radiodiagnóstico, Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, España
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22
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Al Ansari N, Ramalho M, Semelka RC, Buonocore V, Gigli S, Maccioni F. Role of magnetic resonance imaging in the detection and characterization of solid pancreatic nodules: An update. World J Radiol 2015; 7:361-374. [PMID: 26644822 PMCID: PMC4663375 DOI: 10.4329/wjr.v7.i11.361] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Revised: 08/27/2015] [Accepted: 10/08/2015] [Indexed: 02/06/2023] Open
Abstract
Pancreatic ductal adenocarcinoma is the most common malignant tumor of the pancreas. The remaining pancreatic tumors are a diverse group of pancreatic neoplasms that comprises cystic pancreatic neoplasms, endocrine tumors and other uncommon pancreatic tumors. Due to the excellent soft tissue contrast resolution, magnetic resonance imaging (MRI) is frequently able to readily separate cystic from noncystic tumors. Cystic tumors are often easy to diagnose with MRI; however, noncystic non-adenocarcinoma tumors may show a wide spectrum of imaging features, which can potentially mimic ductal adenocarcinoma. MRI is a reliable technique for the characterization of pancreatic lesions. The implementation of novel motion-resistant pulse sequences and respiratory gating techniques, as well as the recognized benefits of MR cholangiopancreatography, make MRI a very accurate examination for the evaluation of pancreatic masses. MRI has the distinctive ability of non-invasive assessment of the pancreatic ducts, pancreatic parenchyma, neighbouring soft tissues, and vascular network in one examination. MRI can identify different characteristics of various solid pancreatic lesions, potentially allowing the differentiation of adenocarcinoma from other benign and malignant entities. In this review we describe the MRI protocols and MRI characteristics of various solid pancreatic lesions. Recognition of these characteristics may establish the right diagnosis or at least narrow the differential diagnosis, thus avoiding unnecessary tests or procedures and permitting better management.
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23
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Engler CC, Lemke J, Kornmann M, Barth TF, Schmidt SA, Henne-Bruns D. Ectopic spleen and liver hemangioma mimicking metastatic pancreatic neuroendocrine tumor. Int J Surg Case Rep 2015; 17:139-42. [PMID: 26670205 PMCID: PMC4701808 DOI: 10.1016/j.ijscr.2015.10.041] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Revised: 10/12/2015] [Accepted: 10/31/2015] [Indexed: 12/15/2022] Open
Abstract
Pancreatic tumors comprise benign lesion and malignant lesion, most importantly pancreatic adenocarcinoma, acinar cell carcinoma, neuroendocrine carcinoma or metastasis. Surgical resection provides the only chance for cure for malignant pancreatic tumors. In some cases, surgical resection is performed because a malignant lesion is suspected, however, histopathological examinations eventually reveal a benign lesion. Here, we report the case of a 49-year-old woman, who was initially diagnosed with a neuroendocrine tumor of the pancreas with metastasis to the liver. The patient underwent distal pancreatectomy and atypical liver resection. Surprisingly, however, histopathological examination revealed an intrapancreatic accessory spleen (IPAS) of the pancreatic tail as well as liver hemangioma. This unique case report highlights the impact of extensive preoperative examinations to differentiate benign and malignant pancreatic lesions and, possibly, prevent patients from unnecessary surgery.
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Affiliation(s)
- Christine C Engler
- Clinic of General and Visceral Surgery, University of Ulm, Albert-Einstein-Allee 23, 89081 Ulm, Germany
| | - Johannes Lemke
- Clinic of General and Visceral Surgery, University of Ulm, Albert-Einstein-Allee 23, 89081 Ulm, Germany
| | - Marko Kornmann
- Clinic of General and Visceral Surgery, University of Ulm, Albert-Einstein-Allee 23, 89081 Ulm, Germany
| | - Thomas F Barth
- Institute of Pathology, University of Ulm, Albert-Einstein-Allee 23, 89081 Ulm, Germany
| | - Stefan A Schmidt
- Department of Diagnostic and Interventional Radiology, University of Ulm, Albert-Einstein-Allee 23, 89081 Ulm, Germany
| | - Doris Henne-Bruns
- Clinic of General and Visceral Surgery, University of Ulm, Albert-Einstein-Allee 23, 89081 Ulm, Germany.
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Inflammatory myofibroblastic tumor of the pancreatic head - a case report of a 6 months old child and review of the literature. Radiol Oncol 2015; 49:265-70. [PMID: 26401132 PMCID: PMC4577223 DOI: 10.2478/raon-2014-0017] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Accepted: 03/22/2014] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Inflammatory myofibroblastic tumors are rare in the pediatric population. Most common localizations were reported in the lungs. A localization in the pancreas needs differentiation from other tumors and chronic pancreatitis. Treatment is surgical resection, although there are reports of treatment with oral steroids and radiation therapy. CASE REPORT A 6-month-old child was treated due to a tumor in the head of the pancreas. On admission he was jaundiced with pruritus. US and MRI confirmed pancreatic tumor. Preoperative biopsy wasn't conclusive regarding the nature of the tumor. Duodenopancreatectomy was performed. Postoperative course was uneventful. Histologic examination confirmed the diagnosis of inflammatory myofibroblastic tumor. On follow up, he remained with no evidence of recurrence. CONCLUSIONS A literature review revealed 10 cases of pancreatic inflammatory myofibroblastic tumors in the pediatric age group. Our patient is the youngest reported. Despite major resection, there were no complications. However, management of this child might be possible with steroids, but conservative treatment might be insufficient, especially in aggressive forms of tumors.
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Cystic form of paraduodenal pancreatitis (cystic dystrophy in heterotopic pancreas (CDHP)): a potential link with minor papilla abnormalities? A study in a large series. Eur Radiol 2015; 26:199-205. [PMID: 25991480 DOI: 10.1007/s00330-015-3799-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Revised: 04/07/2015] [Accepted: 04/13/2015] [Indexed: 02/06/2023]
Abstract
OBJECTIVES To analyze the association between cystic dystrophy in the heterotopic pancreas (CDHP) and minor papilla abnormalities. MATERIAL AND METHODS Seventy-six patients with CDHP were retrospectively included over 14 years. Two radiologists searched for MDCT signs of CDHP (cysts and thickened intestinal wall, inflammatory changes), and minor papilla abnormalities (Santorini duct dilatation, luminal calcifications of the minor papilla). Other pancreatic abnormalities (parenchymal calcifications, main pancreatic duct dilatation) or bile duct dilatation were also analysed. RESULTS CDHP was mostly located in the second part of the duodenum (71/76, 93.5 %). Median duodenal wall thickness was 20 mm (range 10-46). There were multiple cysts in 86 % (65/76, median = 3), measuring 2-60 mm. No cysts were identified in four patients (5 %). Inflammatory changes were found in 87 % (66/76). Minor papilla abnormalities were found in 37 % (28/76) and calcifications in the minor papilla without calcifications in the major papilla were only observed in three patients (4 %). Abnormalities of the pancreas and main bile duct dilatation were identified in 78 % (59/76) and 38 % (29/76). CONCLUSION Previously described CT features were seen in most patients with CDHP. However, minor papilla abnormalities were seen in a minority of patients and, therefore, do not seem to be a predisposing factor for CDHP. KEY POINTS Imaging features suggesting a CDHP diagnosis are confirmed in a large series. Minor papilla abnormalities do not seem to be a predisposing factor for CDHP. Most patients did not have any isolated minor papilla abnormalities.
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Padhiari RK, Ramesh M, G.P P, Ahmed N. Tuberculosis biliary stricture simulating as cholangiocarcinoma. J Clin Diagn Res 2015; 9:PL01-2. [PMID: 25954666 PMCID: PMC4413116 DOI: 10.7860/jcdr/2015/11266.5706] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Accepted: 02/02/2015] [Indexed: 11/24/2022]
Affiliation(s)
- Ranjit Kumar Padhiari
- Post-Graduate, Department of General Surgery, Bangalore Medical College & Research Institute, Bangalore, India
| | - M.K Ramesh
- Professor, Department of General Surgery, Bangalore Medical College & Research Institute, Bangalore, India
| | - Praveen G.P
- Post-Graduate, Department of General Surgery, Bangalore Medical College & Research Institute, Bangalore, India
| | - Niyaz Ahmed
- Senior Resident, Department of General Surgery, Bangalore Medical College & Research Institute, Bangalore, India
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Yokoi Y, Nakamura I, Kaneko T, Sawayanagi T, Watahiki Y, Kuroda M. Pancreatic mass as an initial manifestation of polyarteritis nodosa: A case report and review of the literature. World J Gastroenterol 2015; 21:1014-1019. [PMID: 25624739 PMCID: PMC4299318 DOI: 10.3748/wjg.v21.i3.1014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Revised: 07/29/2014] [Accepted: 09/19/2014] [Indexed: 02/06/2023] Open
Abstract
Classic polyarteritis nodosa (PAN) that targets medium-sized muscular arteries and microscopic polyangiitis (MPA), characterized by inflammation of small-caliber vessels and the presence of circulating myeloperoxidase anti-neutrophil cytoplasmic antibodies (MPO-ANCA), are distinct clinicopathological entities of systemic vasculitis. A 66-year-old woman presented with fever, cholestasis and positive MPO-ANCA. Radiological examination showed a pancreatic mass compressing the bile duct. Therefore, we performed pancreatoduodenectomy. Histopathological examination revealed that necrotizing vasculitis predominantly affecting the medium-sized vessels, spared arterioles or capillaries in the pancreas, a finding consistent with PAN. Unexpectedly, renal biopsy revealed small-caliber vasculitis and glomerulonephritis, supporting MPA. The initial manifestation of a pancreatic mass associated with vasculitis has only been reported in 7 articles. Its diagnosis is challenging because no reliable clinico-radiological findings have been observed. Clinicians should be aware of such cases and early diagnosis followed by immunosuppression is mandatory. Our findings may reflect a polyangiitis overlap syndrome coexisting between pancreatic PAN and renal MPA.
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Frequency and characterization of benign lesions in patients undergoing surgery for the suspicion of solid pancreatic neoplasm. Pancreas 2014; 43:1329-33. [PMID: 25058888 DOI: 10.1097/mpa.0000000000000193] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
OBJECTIVES A diagnosis of benign lesions (BLs) is reported in 5% to 21% of pancreatoduodenectomies performed for neoplasms; no data for body-tail resections are available. The aims were to investigate the frequency and characterize the BLs mimicking cancer in the head and the body-tail of the pancreas. METHODS This study is a retrospective review of pancreatic specimenscollected from 2005 to 2011 in the pathology database of Mainz (Germany). Patients with final diagnosis excluding malignancy were analyzed by histology, imaging, and clinical aspects. RESULTS Among 373 patients, 33 patients (8.8%) were diagnosed with a benign disease: 25 (8.4%) of 298 in the pancreatic head and 8 (10.7%) of 75 in the body-tail resections. Paraduodenal pancreatitis was diagnosed in 13 (3.5%) of 373 patients; autoimmune pancreatitis (AIP), in 11 (2.9%); "ordinary" chronic pancreatitis, in 6 (1.6%); and accessory spleen, in 3 (0.8%). In pancreatic head resections, the most frequent diagnoses were paraduodenal pancreatitis (13/298, 4.4%) and AIP (9/298, 3%), whereas in the body-tail, the most frequent diagnoses were accessory spleen (3/75, 4%), chronic pancreatitis (3/75, 4%), and AIP (2/75, 2.7%). CONCLUSIONS Benign lesions are observed with the same frequency inspecimens of the head or the body-tail of the pancreas.
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Téllez-Ávila FI, Villalobos-Garita &A, Giovannini M, Chan C, Hernández-Calleros J, Uscanga L, Ramírez-Luna M&A. Follow-up of patients with pseudotumoral chronic pancreatitis: Outcome and surveillance. World J Gastroenterol 2014; 20:8612-8616. [PMID: 25024616 PMCID: PMC4093711 DOI: 10.3748/wjg.v20.i26.8612] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Revised: 02/14/2014] [Accepted: 04/09/2014] [Indexed: 02/06/2023] Open
Abstract
AIM: To follow up patients with pseudotumoral chronic pancreatitis (PCP) to assess their outcome and identify an optimal surveillance interval.
METHODS: Data obtained prospectively were analyzed in a retrospective manner. Patients with clinical evidence of chronic pancreatitis (abdominal pain in the epigastrium, steatorrhea, and diabetes mellitus), endoscopic ultrasound (EUS) criteria > 4, and EUS-fine needle aspiration (FNA) were included. A pseudotumor was defined as a non-neoplastic space-occupying lesion, a cause of chronic pancreatitis that may mimic changes typical of pancreatic cancer on CT or endoscopic ultrasound but without histological evidence. A real tumor was defined as a neoplastic space-occupying lesion because of pancreatic cancer confirmed by histology.
RESULTS: Thirty-five patients with chronic pancreatitis were included, 26 (74.2%) of whom were men. Nine (25.7%) patients were diagnosed with pseudotumoral chronic pancreatitis and two (2/35; 5.7%) patients with pseudotumoral chronic pancreatitis were diagnosed with pancreatic cancer on follow-up. The time between the diagnosis of pseudotumoral chronic pancreatitis and pancreatic adenocarcinoma was 35 and 30 d in the two patients. Definitive diagnosis of pancreatic adenocarcinoma was made by surgery. In the remaining six patients with pseudotumoral chronic pancreatitis, the median of follow-up was 11 mo (range 1-22 mo) and they showed no evidence of malignancy on surveillance. In the follow-up of patients without pseudotumoral chronic pancreatitis but with chronic pancreatitis, none were diagnosed with pancreatic cancer. According to our data, older patients with chronic pancreatitis are at risk of pseudotumoral chronic pancreatitis.
CONCLUSION: According to characteristics of patient, detection of PCP should lead a surveillance program for pancreatic cancer with EUS-FNA in < 1 mo or directly to surgical resection.
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Adsay NV, Basturk O, Saka B, Bagci P, Ozdemir D, Balci S, Sarmiento JM, Kooby DA, Staley C, Maithel SK, Everett R, Cheng JD, Thirabanjasak D, Weaver DW. Whipple made simple for surgical pathologists: orientation, dissection, and sampling of pancreaticoduodenectomy specimens for a more practical and accurate evaluation of pancreatic, distal common bile duct, and ampullary tumors. Am J Surg Pathol 2014; 38:480-93. [PMID: 24451278 PMCID: PMC4051141 DOI: 10.1097/pas.0000000000000165] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Pancreaticoduodenectomy (PD) specimens present a challenge for surgical pathologists because of the relative rarity of these specimens, combined with the anatomic complexity. Here, we describe our experience on the orientation, dissection, and sampling of PD specimens for a more practical and accurate evaluation of pancreatic, distal common bile duct (CBD), and ampullary tumors. For orientation of PDs, identification of the "trapezoid," created by the vascular bed at the center, the pancreatic neck margin on the left, and the uncinate margin on the right, is of outmost importance in finding all the pertinent margins of the specimen including the CBD, which is located at the upper right edge of this trapezoid. After orientation, all the margins can be sampled. We submit the uncinate margin entirely as a perpendicular inked margin because this adipose tissue-rich area often reveals subtle satellite carcinomas that are grossly invisible, and, with this approach, the number of R1 resections has doubled in our experience. Then, to ensure proper identification of all lymph nodes (LNs), we utilize the orange-peeling approach, in which the soft tissue surrounding the pancreatic head is shaved off in 7 arbitrarily defined regions, which also serve as shaved samples of the so-called "peripancreatic soft tissue" that defines pT3 in the current American Joint Committee on Cancer TNM. With this approach, our LN count increased from 6 to 14 and LN positivity rate from 50% to 73%. In addition, in 90% of pancreatic ductal adenocarcinomas there are grossly undetected microfoci of carcinoma. For determination of the primary site and the extent of the tumor, we believe bisectioning of the pancreatic head, instead of axial (transverse) slicing, is the most revealing approach. In addition, documentation of the findings in the duodenal surface of the ampulla is crucial for ampullary carcinomas and their recent site-specific categorization into 4 categories. Therefore, we probe both the CBD and the pancreatic duct from distal to the ampulla and cut the pancreatic head to the ampulla at a plane that goes through both ducts. Then, we sample the bisected pancreatic head depending on the findings of the case. For example, for proper staging of ampullary carcinomas, it is imperative to take the sections perpendicular to the duodenal serosa at the "groove" area, as ampullary carcinomas often extend to this region. Amputative (axial) sectioning of the ampulla, although good for documentation of the peri-Oddi spread of the intra-ampullary tumors, unfortunately disallows documentation of mucosal spread of the papilla of Vater tumors (those arising from the edge of the ampulla, where the ducts transition to duodenal mucosa and extending) into the neighboring duodenum. Axial sectioning also often fails to document tumor spread to the "groove" area. In conclusion, knowledge of the gross characteristics of the anatomic hallmarks is essential for proper dissection of PD specimens. The approach described above allows practical and accurate documentation and staging of pancreas, distal CBD, and ampullary cancers.
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Affiliation(s)
- N. Volkan Adsay
- Department of Pathology Emory University School of Medicine and Winship Cancer Institute Atlanta, GA
| | - Olca Basturk
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Burcu Saka
- Department of Pathology Emory University School of Medicine and Winship Cancer Institute Atlanta, GA
| | - Pelin Bagci
- Department of Pathology Emory University School of Medicine and Winship Cancer Institute Atlanta, GA
| | - Denizhan Ozdemir
- Department of Pathology Emory University School of Medicine and Winship Cancer Institute Atlanta, GA
| | - Serdar Balci
- Department of Pathology Emory University School of Medicine and Winship Cancer Institute Atlanta, GA
| | - Juan M. Sarmiento
- Department of General Surgery Emory University School of Medicine and Winship Cancer Institute Atlanta, GA
| | - David A. Kooby
- Department of Surgical Oncology, Emory University School of Medicine and Winship Cancer Institute Atlanta, GA
| | - Charles Staley
- Department of Surgical Oncology, Emory University School of Medicine and Winship Cancer Institute Atlanta, GA
| | - Shishir K. Maithel
- Department of Surgical Oncology, Emory University School of Medicine and Winship Cancer Institute Atlanta, GA
| | - Rhonda Everett
- Department of Pathology Emory University School of Medicine and Winship Cancer Institute Atlanta, GA
| | | | | | - Donald W. Weaver
- Department of General Surgery, Wayne State University and Karmanos Cancer Institute, Detroit, MI
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Granulomatous pancreatitis in a patient with acute manifested insulin-dependent diabetes mellitus. Case Rep Pathol 2014; 2014:615426. [PMID: 24711951 PMCID: PMC3965917 DOI: 10.1155/2014/615426] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Accepted: 01/27/2014] [Indexed: 11/18/2022] Open
Abstract
Isolated granulomatous noncaseating pancreatitis is a rare condition exceptionally described in human population. We demonstrate a case of the a 71-years-old female patient suffering from recent diabetes mellitus, generalized atherosclerosis and hypertension who died due to pulmonary embolism and terminal bronchopneumonia. Lipomatosis of pancreatic tissue was observed during the postmortem examination. Histological examination of pancreatic tissue discovered multiple small noncaseating epithelioid cell and giant cell granulomas, partly replacing the islets of Langerhans. To our knowledge, our case represents the first description of noninfectious granulomatous pancreatitis associated with acute manifested insulin-dependent diabetes mellitus.
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Abstract
Several uncommon primary pancreatic tumors, inflammatory conditions, metastasis to the pancreas and peripancreatic masses can mimic the appearance of pancreatic ductal adenocarcinoma (PDA). Differentiation between these lesions and PDA can be challenging, due to the overlap in imaging features; however, familiarity with their typical imaging features and clinical presentation may be helpful in their differentiation, as in some cases, invasive diagnostic tests or unnecessary surgery can be avoided. The different pathologies that can mimic PDA include inflammatory conditions such as the various forms of pancreatitis (chronic-focal mass-forming, autoimmune and groove pancreatitis), pancreatic neuroendocrine tumors, solid pseudopapillary tumors, metastasis (solid non-lymphomatous and hematologic), congenital variants (annular pancreas), as well as peripancreatic lesions (accessory spleen, adrenal masses, duodenal masses, lymph nodes and vascular lesions), and certain rare pancreatic tumors (e.g., acinar cell tumors, solid serous tumors, hamartoma and solitary fibrous tumors). The clinical presentation and imaging features of the most commonly encountered mimics of PDA are discussed in this presentation with representative illustrations.
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Affiliation(s)
- Mahmoud M Al-Hawary
- Department of Radiology, University of Michigan Health Services, Ann Arbor, MI, USA
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Moh IH, Kim JB, Shin SR, Jung SW, Park SH, Kim JW, Shin MK, Lee MS. A case of intraperitoneal immunoglobulin G4-related inflammatory pseudotumor. THE KOREAN JOURNAL OF GASTROENTEROLOGY 2013; 60:258-61. [PMID: 23089913 DOI: 10.4166/kjg.2012.60.4.258] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The term inflammatory pseudotumor (IPT) has been used to describe inflammatory and fibrosing tumoral processes of an undetermined cause that may involve a variety of organ system. IgG4-related disease is a newly recognized fibroinflammatory condition characterized by IgG4-producing plasma cell expansion in affected organs and, often but not always, elevated serum IgG4 concentrations. IgG4-related IPTs, a subtype of IPT, are characterized by dense infiltration of IgG4-positive plasma cells and stromal fibrosis. The association between inflammatory pseudotumor and IgG4 was first reported with a regard to sclerosing pancreatitis. Despite there are many reports on intraperitoneal IPTs including both cellular and lymphoplasmacytic type, only a few cases have been confirmed to be IgG4-related. We experienced a case of intraperitoneal IgG4-related inflammatory pseudotumor in an 83-year-old woman presenting with epigastric pain and malaise. Surgical specimens revealed an IgG4-related inflammatory pseudotumor.
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Affiliation(s)
- In Ho Moh
- Department of Internal Medicine, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
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Park JS, Kim WJ, Jeong YG, Park YS, Koo HC, Lee TI, Choi GC, Kim S. A case of intrapancreatic accessory spleen mistaken as a pancreatic mass due to different enhancing pattern from normal spleen. THE KOREAN JOURNAL OF GASTROENTEROLOGY 2012; 58:357-60. [PMID: 22198236 DOI: 10.4166/kjg.2011.58.6.357] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Most cases of accessory spleen show similar features as normal spleen in imaging studies. However, some accessory spleen has unusual scan feature which can be misdiagnosed. We present a case of intrapancreatic accessory spleen that was discovered incidentally during a workup for abdominal pain in a 47-year-old woman. CT and MRI revealed a different enhancing pattern from that of the spleen. Further evaluation with endoscopic ultrasonography failed to identify the pancreatic mass. Therefore, it was surgically removed and diagnosed pathologically as an accessory spleen.
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Affiliation(s)
- Jun Seok Park
- Department of Internal Medicine, Soonchunhyang University Hospital, Gumi, Korea
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35
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Ray S, Chatterjee S, Saha AK, Samanta S. Obstructive Jaundice Due to Tuberculosis of Distal CBD and Periampullary Region Mimickcholangiocarcinoma. Niger J Surg 2012; 18:17-8. [PMID: 24027386 PMCID: PMC3716243 DOI: 10.4103/1117-6806.95478] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Abdominal tuberculosis (TB) commonly affects the intestinal tract, lymph nodes, peritoneum, and solid organs in varying combinations. Hepatobiliary or pancreatic TB is rare and the preoperative diagnosis is difficult. Though rare, there have been a few citations of intrahepatic tuberculosis, but isolated bile duct tuberculosis is extremely rare. Here we report a case of obstructive jaundice which was initially thought to be due to lower-end cholangiocarcinoma but postoperatively it was found to be tuberculosis.
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Affiliation(s)
- Sumantra Ray
- Nil Ratan Sirrcar Medical College and Hospital, Kolkata, India
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36
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Farris AB, Basturk O, Adsay NV. Pancreatitis, Other Inflammatory Lesions, and Pancreatic Pseudotumors. Surg Pathol Clin 2011; 4:625-650. [PMID: 26837491 DOI: 10.1016/j.path.2011.03.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The pancreas is versatile in the diversity of disorders that it can exhibit. In this article, characteristics of disorders such as chronic, autoimmune, eosinophilic, hereditary, and infectious pancreatitis are described. With regard to autoimmune pancreatitis, the role of clinical evaluation, histologic examination, and IgG4 immunohistochemistry is discussed. The role of pancreatitis in the pathogenesis of diabetes is also mentioned. Some implications of pancreatitis are highlighted, including the neoplastic predisposition caused by inflammatory lesions of the pancreas. The goal of this article is to convey an appreciation of these disorders because their recognition can benefit patients tremendously, as inflammatory lesions of the pancreas can be mass-forming, giving rise to pseudotumors, and leading to surgical resection that may otherwise be unnecessary.
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Affiliation(s)
- Alton B Farris
- Department of Pathology and Laboratory Medicine, Emory University Hospital, Emory University, 1364 Clifton Road Northeast, Room H-188, Atlanta, GA 30322, USA.
| | - Olca Basturk
- Department of Pathology, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA
| | - N Volkan Adsay
- Department of Pathology and Laboratory Medicine, Emory University, 1364 Clifton Road NE, Room H-180B, Atlanta, GA 30322, USA
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Kersting S, Roth J, Bunk A. Transabdominal contrast-enhanced ultrasonography of pancreatic cancer. Pancreatology 2011; 11 Suppl 2:20-7. [PMID: 21464583 DOI: 10.1159/000323480] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Since its introduction, contrast-enhanced ultrasonography (CEUS) has significantly extended the value of ultrasonography (US). CEUS can be used to more accurately determine pancreatic lesions compared to conventional US or to characterize lesions already detectable by US. Thus, CEUS can aid in the differential diagnosis of pancreatic tumors. Using US contrast media, it is possible to visually detect microvessels in the majority of pancreatic ductal adenocarcinomas. Thus, the use of quantitatively evaluated transabdominal CEUS can help in the differentiation of patients with mass-forming pancreatitis from patients with pancreatic adenocarcinomas. In neuroendocrine pancreatic tumors, different enhancement patterns can be observed in relation to the tumor mass: larger ones show a rapid early enhancement sometimes combined with necrotic central structures, and smaller ones disclose a capillary-blush enhancement. Pseudocysts, the most widespread cystic lesions of the pancreas, are not vascularized. They do not show any signal in CEUS and remain entirely anechoic in all phases, while true cystic pancreatic tumors usually have vascularized septa and parietal nodules. In summary, CEUS is effective for differentiating solid pancreatic tumors in most cases. CEUS is safe and cost effective and can better discriminate solid from cystic pancreatic lesions, thereby directing further imaging modalities.
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Affiliation(s)
- Stephan Kersting
- Department of General, Thoracic and Vascular Surgery, School of Medicine, Dresden University of Technology, Dresden, Germany. stephan.kersting @ uniklinikum-dresden.de
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Dursun N, Feng J, Basturk O, Bandyopadhyay S, Cheng JD, Adsay VN. Vacuolated cell pattern of pancreatobiliary adenocarcinoma: a clinicopathological analysis of 24 cases of a poorly recognized distinctive morphologic variant important in the differential diagnosis. Virchows Arch 2010; 457:643-9. [PMID: 20931225 PMCID: PMC3164262 DOI: 10.1007/s00428-010-0978-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2010] [Revised: 09/07/2010] [Accepted: 09/09/2010] [Indexed: 12/27/2022]
Abstract
Pancreatic ductal adenocarcinoma (PDCA) is characterized by well-defined tubular units in the vast majority of the cases; however, variations in this theme do occur. It is important to recognize the morphologic spectrum of PDCA to avoid misdiagnosis especially in small specimens and also in metastatic foci. Here, we document a morphologic variant of PDCA that is characterized by a distinctive pattern of infiltrating cribriform nests in a distinctive "microcystic" or "secretory" pattern. Twenty-four cases of PDCA have been identified in a review of 505 cases diagnosed with PDCA. Histologically, this pattern was characterized by infiltrating nests of tumor cells with large vacuoles and "signet-ring" like appearance imparting a cribriform growth pattern. The vacuoles were one to five cells in size, often merging to form multilocular spaces separated by a thin rim of cell membrane. Many of these spaces contained CA19.9 positive granular secretory material. The nuclei were often pushed to the periphery and compressed in a pattern resembling adipocytes, although the nuclei were often densely hyperchromatic and displayed significant atypia. Especially in biopsies from the peripancreatic fat and peritoneum, these neoplastic cells had been misdiagnosed as degenerating adipocytes, and in the lymph nodes, they had been misinterpreted as lipogranulomas. Clinical findings of the patients were similar to that of conventional PDCA, except higher incidence of history of smoking (83% vs. 60%; p=0.034). In conclusion, vacuolated cell adenocarcinoma is a distinct morphologic variant of PDCA, and the presence of this peculiar pattern in a metastatic site, although not specific, should raise the suspicion of a PDCA.
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Affiliation(s)
- Nevra Dursun
- Department of Pathology, Istanbul Education and Research Hospital, Istanbul, Turkey
| | - Jining Feng
- Department of Pathology, Karmanos Cancer Institute and Wayne State University, Detroit, MI, USA
| | - Olca Basturk
- Department of Pathology, Memorial Sloan–Kettering Cancer Center, New York, NY, USA
| | - Sudeshna Bandyopadhyay
- Department of Pathology, Karmanos Cancer Institute and Wayne State University, Detroit, MI, USA
| | | | - Volkan N. Adsay
- Department of Pathology and Laboratory Medicine, Emory University Hospital, 1364 Clifton Road NE, Room H-180B, Atlanta, GA 30322, USA
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Abstract
OBJECTIVES Owing to the challenges in obtaining pancreatic biopsies, pancreatic resection for presumed malignancy is often performed without histological confirmation. As a result, benign lesions are sometimes surgically removed. One such condition, which is poorly defined in the literature, is referred to as lipomatous pseudohypertrophy (LPH) of the pancreas. METHODS Five cases of LPH were analyzed. RESULTS Four patients underwent surgical resection, 3 of which were diagnosed preoperatively by radiology as having ductal adenocarcinoma. The fourth case was correctly interpreted by magnetic resonance imaging as LPH, but the patient underwent resection because of the intractable pain due to pancreatitis. The fifth patient has been placed on watchful waiting.Two tumors were in the pancreatic head, one in the tail, one in the uncinate process, and one demonstrated diffuse involvement. Microscopically, they were characterized as having normal lipocytes without lipoblasts or inflammation. Within the adipose tissue, scattered microscopic foci of pancreatic parenchyma could be seen. CONCLUSION Lipomatous pseudohypertrophy of the pancreas is a distinct entity characterized by localized/diffuse replacement of pancreatic parenchyma with mature adipose tissue. It forms a pseudotumor that may be difficult to distinguish clinically from pancreatic adenocarcinoma. This entity should be considered when evaluating patients with a new diagnosis of a hypodense pancreatic neoplasm on imaging.
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Basturk O, Coban I, Adsay NV. Pancreatic cysts: pathologic classification, differential diagnosis, and clinical implications. Arch Pathol Lab Med 2009; 133:423-38. [PMID: 19260748 DOI: 10.5858/133.3.423] [Citation(s) in RCA: 198] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/04/2008] [Indexed: 12/14/2022]
Abstract
CONTEXT Cystic lesions of the pancreas are being recognized with increasing frequency and have become a more common finding in clinical practice because of the widespread use of advanced imaging modalities and the sharp drop in the mortality rate of pancreatic surgery. Consequently, in the past 2 decades, the nature of many cystic tumors in this organ has been better characterized, and significant developments have taken place in the classification and in our understanding of pancreatic cystic lesions. OBJECTIVE To provide an overview of the current concepts in classification, differential diagnosis, and clinical/biologic behavior of pancreatic cystic tumors. DATA SOURCES The authors' personal experience, based on institutional and consultation materials, combined with an analysis of the literature. CONCLUSIONS In contrast to solid tumors, most of which are invasive ductal adenocarcinomas with dismal prognosis, cystic lesions of the pancreas are often either benign or low-grade indolent neoplasia. However, those that are mucinous, namely, intraductal papillary mucinous neoplasms and mucinous cystic neoplasms, constitute an important category because they have well-established malignant potential, representing an adenoma-carcinoma sequence. Those that are nonmucinous such as serous tumors, congenital cysts, lymphoepithelial cysts, and squamoid cyst of pancreatic ducts have no malignant potential. Only rare nonmucinous cystic tumors that occur as a result of degenerative/necrotic changes in otherwise solid neoplasia, such as cystic ductal adenocarcinomas, cystic pancreatic endocrine neoplasia, and solid-pseudopapillary neoplasm, are also malignant and have variable degrees of aggressiveness.
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Affiliation(s)
- Olca Basturk
- Department of Pathology, New York University, New York, New York, USA
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Zamboni G, Capelli P, Scarpa A, Bogina G, Pesci A, Brunello E, Klöppel G. Nonneoplastic mimickers of pancreatic neoplasms. Arch Pathol Lab Med 2009; 133:439-53. [PMID: 19260749 DOI: 10.5858/133.3.439] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/08/2008] [Indexed: 11/06/2022]
Abstract
CONTEXT A variety of nonneoplastic conditions may form pancreatic masses that mimic carcinoma. Approximately 5% to 10% of pancreatectomies performed with the clinical diagnosis of pancreatic cancer prove on microscopic evaluation to be pseudotumors. OBJECTIVES To illustrate the clinical and pathologic characteristics of the 2 most frequent pseudotumoral inflammatory conditions, autoimmune pancreatitis and paraduodenal pancreatitis, and describe the criteria that may be useful in the differential diagnosis versus pancreatic carcinoma. DATA SOURCES Recent literature and the authors' experience with the clinical and pathologic characteristics of autoimmune pancreatitis and paraduodenal pancreatitis. CONCLUSIONS The knowledge of the clinical, radiologic, and pathologic findings in both autoimmune pancreatitis and paraduodenal pancreatitis is crucial in making the correct preoperative diagnosis. Autoimmune pancreatitis, which occurs in isolated or syndromic forms, is characterized by a distinctive fibroinflammatory process that can either be limited to the pancreas or extend to the biliary tree. Its correct preoperative identification on biopsy material with ancillary immunohistochemical detection of dense immunoglobulin G4-positive plasma cell infiltration is possible and crucial to prevent major surgery and to treat these patients with steroid therapy. Paraduodenal pancreatitis is a special form of chronic pancreatitis that affects young males with a history of alcohol abuse and predominantly involves the duodenal wall in the region of the minor papilla. Pathogenetically, the anatomical and/or functional obstruction of the papilla minor, resulting from an incomplete involution of the intraduodenal dorsal pancreas, associated with alcohol abuse represents the key factor. Endoscopic drainage of the papilla minor, with decompression of the intraduodenal and dorsal pancreas, might be considered in these patients.
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Affiliation(s)
- Giuseppe Zamboni
- Department of Pathology, University of Verona, Ospedale Sacro Cuore-Don Calabria, Via don Sempreboni 5, 37024 Negrar-Verona, Italy.
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44
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Kakar S, Smyrk TC. Autoimmune pancreatitis: negotiating the labyrinth of terminology, diagnosis and differential diagnosis. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.mpdhp.2008.04.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Dietrich CF, Ignee A, Braden B, Barreiros AP, Ott M, Hocke M. Improved differentiation of pancreatic tumors using contrast-enhanced endoscopic ultrasound. Clin Gastroenterol Hepatol 2008; 6:590-597.e1. [PMID: 18455699 DOI: 10.1016/j.cgh.2008.02.030] [Citation(s) in RCA: 114] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND & AIMS Endoscopic ultrasound is a widely accepted imaging method for staging of ductal adenocarcinoma and the localization of neuroendocrine tumors of the pancreas. We prospectively evaluated conventional color Doppler imaging and contrast-enhanced endoscopic Doppler ultrasound (CE-EDUS) as a new imaging technique for further characterization and differentiation of solid pancreatic tumors. METHODS From 300 patients with pancreatic lesions investigated using contrast-enhanced endoscopic ultrasound we could finally include 93 patients with an undetermined, solitary, predominantly solid, lesion 40 mm or less, and a definite histologically proven diagnosis. After bolus injection of the contrast agent SHU 508A 4 g (400 mg/dL) the vascular pattern of the lesion during the arterial phase was compared with the vascularity of the residual pancreatic parenchyma. RESULTS Color Doppler imaging did not reveal vascularity of the pancreatic parenchyma in any of the patients, and therefore tumor hypovascularity could not be determined in contrast to all CE-EDUS-examined patients revealing at least some degree of parenchymal vascularity. Fifty-seven of 62 patients with ductal adenocarcinoma of the pancreas showed a hypovascularity of the tumor using CE-EDUS. All other pancreatic lesions revealed an isovascular or hypervascular pattern using contrast-enhanced endoscopic ultrasound (20 neuroendocrine tumors, 10 serous microcystic adenomas, and 1 teratoma). Hypovascularity as a sign of malignancy in contrast-enhanced endoscopic ultrasound obtained 92% (82%-97%) sensitivity and 100% specificity (89%-100%). CONCLUSIONS Contrast-enhanced endoscopic ultrasound is effective in differentiating small solid pancreatic tumors of different origin in most cases. Hypovascularity indicates malignancy of pancreatic tumors.
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Agarwal R, Srinivas R, Aggarwal AN. Parenchymal pseudotumoral tuberculosis: case series and systematic review of literature. Respir Med 2007; 102:382-9. [PMID: 18060757 DOI: 10.1016/j.rmed.2007.10.017] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2007] [Revised: 09/29/2007] [Accepted: 10/19/2007] [Indexed: 02/08/2023]
Abstract
Tuberculosis is a rampant infectious pandemic worldwide, with an annual incidence of 8 million active cases and 2 million deaths. Tuberculosis is also among the leading causes of solitary pulmonary nodule in the tropics. Although lymph nodal masses are common in tuberculosis, parenchymal masses are distinctly rare. We report eight immunocompetent adults admitted with large pulmonary masses, and ultimately diagnosed to have parenchymal pseudotumoral tuberculosis. Clinical and radiological resolution followed anti-tubercular therapy alone. We have also conducted a MEDLINE search and summarize the clinical features of all patients with parenchymal pseudotumoral tuberculosis. We also compare our findings with published literature and discuss the possible mechanisms leading to large inflammatory masses, clinical and radiologic clues to the same, common errors in clinical decision making and the therapy of this rare entity.
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Affiliation(s)
- Ritesh Agarwal
- Department of Pulmonary Medicine, Postgraduate Institute of Medical Education and Research, Sector-12, Chandigarh 160012, India.
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Abstract
Due to recent advances in CT/MRI technology, incidentalomas of the pancreas are detected with increasing frequency. Pancreatic incidentalomas should be differentiated into solid and cystic tumors. In both subgroups definitive classification of the tumor is often not possible. Operative therapy is recommended in premalignant or malignant pathologies. Thus solid incidentalomas should be resected independently of their size, if the patient is without serious comorbidities. In case of cystic incidentalomas, benign cystic lesions should be excluded as far as possible. Otherwise they should be resected if their size is >or=2 cm. In case of IPMN with specific risk factors, resection is recommended when the tumor size exceeds 1 cm.
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Affiliation(s)
- U Hopt
- Abteilung Allgemein- und Viszeralchirurgie, Chirurgische Universitätsklinik, Freiburg.
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Dietrich CF, Braden B, Hocke M, Ott M, Ignee A. Improved characterisation of solitary solid pancreatic tumours using contrast enhanced transabdominal ultrasound. J Cancer Res Clin Oncol 2007; 134:635-43. [PMID: 17952469 DOI: 10.1007/s00432-007-0326-6] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2007] [Accepted: 09/28/2007] [Indexed: 02/06/2023]
Abstract
BACKGROUND Contrast enhanced ultrasound (CEUS) is a new imaging method for detection and characterisation of liver tumours. The role of CEUS in pancreatic disease is less obvious. We prospectively evaluated CEUS for characterization of undetermined solid pancreatic lesions (gold standard histology). PATIENTS AND METHODS A total of 112 solitary undetermined pancreatic masses (70 ductal adenocarcinoma and 42 neoplastic nodules of other origin) were prospectively examined in patients without metastatic disease using transabdominal ultrasound. Tumour enhancing features were analyzed in comparison to the surrounding pancreatic parenchyma in patients with adequate visualisation. RESULTS The sign of iso-hypervascularity as a sign of non-ductal adenocarcinoma showed a sensitivity of 100%, specifity of 90% and accuracy of 93.8%. The sign of hypovascularity as a sign of ductal adenocarcinoma showed a sensitivity of 90%, specifity of 100% and an accuracy of 93.8%. CONCLUSION CEUS allows differential diagnosis of ductal adenocarcinoma and non-ductal adenocarcinoma (mainly neuroendocrine tumours and (microcystic) serous pancreatic adenoma) in the most of cases.
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Affiliation(s)
- C F Dietrich
- Medical and Imaging Department, Caritas-Krankenhaus, Innere Medizin 2, Caritaskrankenhaus Bad Mergentheim, Uhlandstr. 7, 97980 Bad Mergentheim, Germany.
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Zen Y, Fujii T, Sato Y, Masuda S, Nakanuma Y. Pathological classification of hepatic inflammatory pseudotumor with respect to IgG4-related disease. Mod Pathol 2007; 20:884-94. [PMID: 17571078 DOI: 10.1038/modpathol.3800836] [Citation(s) in RCA: 160] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Recently, much attention has focused on IgG4-related disease, which is characterized by abundant IgG4-positive plasma cell infiltration and high serum IgG4 levels. IgG4-related disease sometimes manifests as tumorous lesions, and its relationship to inflammatory pseudotumor has been suggested. In this study, we examined clinicopathological features of a total of 16 cases of hepatic inflammatory pseudotumor (11 men and 5 women with an average age of 67 years) with respect to IgG4-related disease. The tumors could be pathologically classified into two types: fibrohistiocytic (10 cases) and lymphoplasmacytic (6 cases). Fibrohistiocytic inflammatory pseudotumors were characterized by xanthogranulomatous inflammation, multinucleated giant cells, and neutrophilic infiltration, and mostly occurred in the peripheral hepatic parenchyma as mass-forming lesions. In contrast, lymphoplasmacytic inflammatory pseudotumors showed diffuse lymphoplasmacytic infiltration and prominent eosinophilic infiltration, and were all found around the hepatic hilum. In addition, venous occlusion with little inflammation and cholangitis without periductal fibrosis were frequently observed in the fibrohistiocytic type, whereas obliterative phlebitis and cholangitis with periductal fibrosis were common features of the lymphoplasmacytic type. Interestingly, IgG4-positive plasma cells were significantly more numerous in the lymphoplasmacytic than fibrohistiocytic type. However, two of the fibrohistiocytic inflammatory pseudotumors had relatively many IgG4-positive plasma cells. In conclusion, hepatic inflammatory pseudotumor could be classified into two types based on clinicopathological characteristics. The lymphoplasmacytic type is unique, and could belong to the so-called IgG4-related diseases. In contrast, the fibrohistiocytic type might still be a heterogeneous group of disorders. This latter type seems pathologically different from IgG4-related disease, although cases with relatively abundant IgG4-positive plasma cells should be differentiated from IgG4-related disease with secondary histopathologic modifications.
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Affiliation(s)
- Yoh Zen
- Department of Human Pathology, Graduate School of Medicine, Kanazawa University, Kanazawa, Japan
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