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Miller FH, Lopes Vendrami C, Hammond NA, Mittal PK, Nikolaidis P, Jawahar A. Pancreatic Cancer and Its Mimics. Radiographics 2023; 43:e230054. [PMID: 37824413 DOI: 10.1148/rg.230054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2023]
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is the most common primary pancreatic malignancy, ranking fourth in cancer-related mortality in the United States. Typically, PDAC appears on images as a hypovascular mass with upstream pancreatic duct dilatation and abrupt duct cutoff, distal pancreatic atrophy, and vascular encasement, with metastatic involvement including lymphadenopathy. However, atypical manifestations that may limit detection of the underlying PDAC may also occur. Atypical PDAC features include findings related to associated conditions such as acute or chronic pancreatitis, a mass that is isointense to the parenchyma, multiplicity, diffuse tumor infiltration, associated calcifications, and cystic components. Several neoplastic and inflammatory conditions can mimic PDAC, such as paraduodenal "groove" pancreatitis, autoimmune pancreatitis, focal acute and chronic pancreatitis, neuroendocrine tumors, solid pseudopapillary neoplasms, metastases, and lymphoma. Differentiation of these conditions from PDAC can be challenging due to overlapping CT and MRI features; however, certain findings can help in differentiation. Diffusion-weighted MRI can be helpful but also can be nonspecific. Accurate diagnosis is pivotal for guiding therapeutic planning and potential outcomes in PDAC and avoiding biopsy or surgical treatment of some of these mimics. Biopsy may still be required for diagnosis in some cases. The authors describe the typical and atypical imaging findings of PDAC and features that may help to differentiate PDAC from its mimics. ©RSNA, 2023 Online supplemental material is available for this article. Quiz questions for this article are available through the Online Learning Center. See the invited commentary by Zins in this issue.
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Affiliation(s)
- Frank H Miller
- From the Department of Radiology, Northwestern Memorial Hospital, Northwestern University Feinberg School of Medicine, 676 N St. Clair St, Ste 800, Chicago, IL 60611 (F.H.M., C.L.V., N.A.H., P.N., A.J.); and Department of Radiology and Imaging, Medical College of Georgia, Augusta, GA (P.K.M.)
| | - Camila Lopes Vendrami
- From the Department of Radiology, Northwestern Memorial Hospital, Northwestern University Feinberg School of Medicine, 676 N St. Clair St, Ste 800, Chicago, IL 60611 (F.H.M., C.L.V., N.A.H., P.N., A.J.); and Department of Radiology and Imaging, Medical College of Georgia, Augusta, GA (P.K.M.)
| | - Nancy A Hammond
- From the Department of Radiology, Northwestern Memorial Hospital, Northwestern University Feinberg School of Medicine, 676 N St. Clair St, Ste 800, Chicago, IL 60611 (F.H.M., C.L.V., N.A.H., P.N., A.J.); and Department of Radiology and Imaging, Medical College of Georgia, Augusta, GA (P.K.M.)
| | - Pardeep K Mittal
- From the Department of Radiology, Northwestern Memorial Hospital, Northwestern University Feinberg School of Medicine, 676 N St. Clair St, Ste 800, Chicago, IL 60611 (F.H.M., C.L.V., N.A.H., P.N., A.J.); and Department of Radiology and Imaging, Medical College of Georgia, Augusta, GA (P.K.M.)
| | - Paul Nikolaidis
- From the Department of Radiology, Northwestern Memorial Hospital, Northwestern University Feinberg School of Medicine, 676 N St. Clair St, Ste 800, Chicago, IL 60611 (F.H.M., C.L.V., N.A.H., P.N., A.J.); and Department of Radiology and Imaging, Medical College of Georgia, Augusta, GA (P.K.M.)
| | - Anugayathri Jawahar
- From the Department of Radiology, Northwestern Memorial Hospital, Northwestern University Feinberg School of Medicine, 676 N St. Clair St, Ste 800, Chicago, IL 60611 (F.H.M., C.L.V., N.A.H., P.N., A.J.); and Department of Radiology and Imaging, Medical College of Georgia, Augusta, GA (P.K.M.)
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Gong L, Shu B, Yu F, Zhang X, Chen J, Peng J. Main Diagnostic Criteria Usually Does Not Work for Autoimmune Pancreatitis Wrongly Presuming Malignancy. Gastroenterol Res Pract 2023; 2023:6652881. [PMID: 39291275 PMCID: PMC11407881 DOI: 10.1155/2023/6652881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 07/21/2023] [Accepted: 08/16/2023] [Indexed: 09/19/2024] Open
Abstract
Background Autoimmune pancreatitis (AIP) usually responds dramatically to steroid therapy. Occasionally, however, misdiagnosed patients have undergone pancreaticoduodenectomy. This study is aimed at providing useful information to improve the accuracy of diagnosis before surgery and thus avoid unnecessary resections in patients with AIP. Methods From January 2015 to February 2020, a series of patients were enrolled, having undergone pancreaticoduodenectomy for presumed malignancy. AIP diagnoses were confirmed by postoperative pathology. The demographic and clinical data of the AIP patients were evaluated. The main diagnostic criteria (HISORt, Asian, and ICDC) for AIP were applied to assess whether and how unnecessary surgery could have been avoided. Results A total of 124 cases of pancreaticoduodenectomy were performed for presumed malignancy. Six patients were diagnosed with benign disease and five with AIP. The prevalences of benign disease and AIP were 4.8% and 4%, respectively. Four patients were female and 1 male, with a mean age of 60.0 years old. Jaundice, pain, and weight loss were observed in 100%, 20%, and 40% of AIP patients, respectively. The radiologic features of the AIP patients were a diffusely enlarged gland (40.0%), a focally enlarged gland (40.0%), pancreatic ductal dilatation (60.0%), upstream parenchymal atrophy (20.0%), bile duct thickening (66.0%), and bile duct stricture (40.0%). Based on the diagnostic criteria for AIP, surgery could have been avoided in two cases. Conclusions IgG4 measurement and integrated use of major diagnostic criteria should be emphasized in every patient eligible for pancreaticoduodenectomies.
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Affiliation(s)
- Lei Gong
- Department of Surgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - Bin Shu
- Center of Hepatopancreatobiliary Diseases, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing 102218, China
| | - Fei Yu
- Center of Hepatopancreatobiliary Diseases, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing 102218, China
| | - Xinjing Zhang
- Department of Surgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - Jianfei Chen
- Department of Surgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - Jirun Peng
- Department of Surgery, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
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Pancreatic Cancer in Chronic Pancreatitis: Pathogenesis and Diagnostic Approach. Cancers (Basel) 2023; 15:cancers15030761. [PMID: 36765725 PMCID: PMC9913572 DOI: 10.3390/cancers15030761] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 01/20/2023] [Accepted: 01/24/2023] [Indexed: 01/28/2023] Open
Abstract
Chronic pancreatitis is one of the main risk factors for pancreatic cancer, but it is a rare event. Inflammation and oncogenes work hand in hand as key promoters of this disease. Tobacco is another co-factor. During alcoholic chronic pancreatitis, the cumulative risk of cancer is estimated at 4% after 15 to 20 years. This cumulative risk is higher in hereditary pancreatitis: 19 and 12% in the case of PRSS1 and SPINK1 mutations, respectively, at an age of 60 years. The diagnosis is difficult due to: (i) clinical symptoms of cancer shared with those of chronic pancreatitis; (ii) the parenchymal and ductal remodeling of chronic pancreatitis rendering imaging analysis difficult; and (iii) differential diagnoses, such as pseudo-tumorous chronic pancreatitis and paraduodenal pancreatitis. Nevertheless, the occurrence of cancer during chronic pancreatitis must be suspected in the case of back pain, weight loss, unbalanced diabetes, and jaundice, despite alcohol withdrawal. Imaging must be systematically reviewed. Endoscopic ultrasound-guided fine-needle biopsy can contribute by targeting suspicious tissue areas with the help of molecular biology (search for KRAS, TP53, CDKN2A, DPC4 mutations). Short-term follow-up of patients is necessary at the clinical and paraclinical levels to try to diagnose cancer at a surgically curable stage. Pancreatic surgery is sometimes necessary if there is any doubt.
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Long-Term Follow-Up and Immunomonitoring of Relapsing Type 1 Autoimmune Pancreatitis Treated With Rituximab. Pancreas 2022; 51:452-462. [PMID: 35835119 DOI: 10.1097/mpa.0000000000002048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
OBJECTIVES To evaluate the efficacy and safety of rituximab in relapsing type 1 autoimmune pancreatitis especially the long-term clinical and immunologic impacts. METHODS All consecutive patients with type 1 autoimmune pancreatitis were retrospectively included. The rituximab protocol was induction therapy of 375 mg·m -2 intravenous weekly for 4 weeks, followed by 500 mg intravenous every 6 months for 2 years. The follow-up included clinical examinations, biological tests, positron emission tomography scan, and immunomonitoring of lymphocyte CD 19+. RESULTS Among the 43 patients included, 15 received rituximab induction therapy, followed by maintenance in 10 cases because of 1 or more relapses after steroids (whether or not followed by immunosuppressants) and multiple organ involvement. All patients had a clinical, biological and morphological response, a deep and persistent drop in serum immunoglobulin G4 levels, an extinction of both pancreatic and extra pancreatic hypermetabolic positron emission tomography scan signals, and a depletion of B lymphocyte CD19+. No relapse occurred during the follow-up (62.8 ± standard error of the mean of 11.1 months). CONCLUSIONS Rituximab is an effective treatment for type 1 autoimmune pancreatitis that provides a rapid strong clinical, biological, and morphological response, which persists after discontinuation without any safety issues.
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Masood M. Autoimmune pancreatitis: What we know so far. JGH Open 2021; 6:3-10. [PMID: 35071782 PMCID: PMC8762623 DOI: 10.1002/jgh3.12688] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 11/12/2021] [Accepted: 11/20/2021] [Indexed: 12/19/2022]
Abstract
Autoimmune pancreatitis (AIP) is a rare, often‐missed disease that involves inflammation of the pancreas and strictures of the pancreatic duct. Its prevalence and incidence in the United States remain scarce. The disease has a varied presentation and often mimics pancreatic malignancy, which can make the diagnosis challenging. Most patients have an excellent response to corticosteroid therapy. Immunomodulators may be used in some cases. Rituximab is an effective, emerging treatment in steroid‐refractory cases. This study aims to review the two distinct types of AIP and provide a detailed analysis of the diagnostic approach and treatment modalities.
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Affiliation(s)
- Muaaz Masood
- Department of Internal Medicine Medical College of Georgia at Augusta University Augusta Georgia USA
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Abstract
Immunoglobulin G4-related disease (IgG4-RD) is a systemic immune-mediated fibroinflammatory disease. Since its discovery nearly two decades ago, our understanding of its pathophysiology and clinical manifestations has grown substantially. Early diagnosis and treatment of this elusive disease can prevent substantial organ damage from end-stage fibrosis, emphasizing the need for prompt recognition and accurate characterization of IgG4-RD. The classification criteria endorsed by the American College of Rheumatology and the European Alliance of Associations for Rheumatology in 2019 provide a framework for establishing the diagnosis in the clinical setting. This process involves recognizing the typical manifestations of the disease and incorporating clinical, radiological, serological, and histopathological information as well as excluding disease mimickers. Glucocorticoids and rituximab are effective at inducing remission in IgG4-RD in most patients, but the optimal approach to long-term management of IgG4-RD remains an area of active clinical research. Expected final online publication date for the Annual Review of Medicine, Volume 73 is January 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.
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Affiliation(s)
- Guy Katz
- Division of Rheumatology, Allergy, and Immunology, Massachusetts General Hospital, Boston, Massachusetts 02114, USA;
| | - John H Stone
- Division of Rheumatology, Allergy, and Immunology, Massachusetts General Hospital, Boston, Massachusetts 02114, USA;
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Trout AT, Anupindi SA, Freeman AJ, Macias-Flores JA, Martinez JA, Parashette KR, Shah U, Squires JH, Morinville VD, Husain SZ, Abu-El-Haija M. North American Society for Pediatric Gastroenterology, Hepatology and Nutrition and the Society for Pediatric Radiology Joint Position Paper on Noninvasive Imaging of Pediatric Pancreatitis: Literature Summary and Recommendations. J Pediatr Gastroenterol Nutr 2021; 72:151-167. [PMID: 33003171 DOI: 10.1097/mpg.0000000000002964] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
ABSTRACT The reported incidence of pediatric pancreatitis is increasing. Noninvasive imaging, including ultrasound, computed tomography (CT), and magnetic resonance imaging (MRI), play important roles in the diagnosis, staging, follow-up, and management of pancreatitis in children. In this position paper, generated by members of the Pancreas Committee of the North American Society for Pediatric Gastroenterology, Hepatology and Nutrition (NASPGHAN) and the Abdominal Imaging Committee of The Society for Pediatric Radiology (SPR), we review the roles of noninvasive imaging in pediatric acute, acute recurrent, and chronic pancreatitis. We discuss available evidence related to noninvasive imaging, highlighting evidence specific to pediatric populations, and we make joint recommendations for use of noninvasive imaging. Further, we highlight the need for research to define the performance and role of noninvasive imaging in pediatric pancreatitis.
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Affiliation(s)
- Andrew T Trout
- Department of Radiology, Cincinnati Children's Hospital Medical Center
- Department of Radiology
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH
| | - Sudha A Anupindi
- Department of Radiology, The Children's Hospital of Philadelphia, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
| | - A Jay Freeman
- Department of Pediatrics, Emory University, Children's Healthcare of Atlanta, Atlanta, GA
| | | | - J Andres Martinez
- Division of Pediatric Gastroenterology, Hepatology and Nutrition, Vanderbilt University Medical Center, Nashville, TN
| | - Kalyan R Parashette
- Department of Pediatrics, Loma Linda University School of Medicine, Loma Linda, CA
| | - Uzma Shah
- Pediatric Gastroenterology, Hepatology and Nutrition, Massachusetts General Hospital for Children, Harvard Medical School, Boston, MA
| | - Judy H Squires
- Department of Radiology, University of Pittsburgh Medical Center, Department of Radiology, UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA
| | - Veronique D Morinville
- Department of Pediatrics, Montreal Children's Hospital, McGill University, Montreal, Quebec, Canada
| | - Sohail Z Husain
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Stanford School of Medicine, Stanford, CA
| | - Maisam Abu-El-Haija
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH
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Abstract
OBJECTIVE Since the time of inception of autoimmune pancreatitis (AIP), our knowledge of autoimmune pancreatitis has expanded significantly. The aim of this review is to provide an update on clinical manifestations, diagnosis, imaging features, and treatment of AIP. BACKGROUND AND CLINICAL SIGNIFICANCE Type 1 AIP is the pancreatic manifestation of IgG4-related systemic disease, which can be diagnosed using a combination of clinical, histopathological, pancreatic imaging findings in conjunction with manifestation in other organs, as well of responsiveness to steroid treatment. It is vital to differentiate AIP from pancreatic cancer since both can mimic each other clinically and radiologically. Type 2 AIP is a rare but distinct subtype of AIP which occurs mostly in the younger patient. CONCLUSION AIP is steroid-responsive chronic pancreatitis with distinct manifestations on imaging.
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Affiliation(s)
- Ashish Khandelwal
- Department of Radiology, Mayo Clinic, 200 First St, Rochester, MN, 55902, USA
| | - Dai Inoue
- Department of Radiology, Kanazawa Univeristy, 1192 Kakumamachi, Kanazawa, Ishikawa, 920-1192, Japan
| | - Naoki Takahashi
- Department of Radiology, Mayo Clinic, 200 First St, Rochester, MN, 55902, USA.
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Glinka J, Calderón F, de Santibañes M, Hyon SH, Gadano A, Mullen E, Pol M, Spina J, de Santibañes E. Early pancreatic cancer in IgG4-related pancreatic mass: A case report. World J Gastrointest Surg 2019; 11:443-448. [PMID: 31879536 PMCID: PMC6912071 DOI: 10.4240/wjgs.v11.i12.443] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 09/18/2019] [Accepted: 11/07/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND IgG4-related disease can manifest diversely, including autoimmune pancreatitis and IgG4-related cholangiopathy. We are reporting a very unusual cause of pancreatic cancer triggered in a previously unknown IgG4-related disease.
CASE SUMMARY A 75-year-old man was diagnosed with a 43 mm × 33 mm pancreatic head tumor after consulting for abdominal pain and jaundice. A pancreaticoduodenectomy was carried out uneventfully, and the histopathology report showed an early stage of acinar-cell pancreatic cancer. The patient reconsulted on the 30th postoperative day with fever, jaundice and asthenia. Magnetic resonance cholangiopancreatography evidenced an extense bile duct stricture. A percutaneous biliary drainage proved to be ineffective, even after exchanging it with larger bore drainage. Reviewing the surgical specimen, features compatible with IgG4-related disease were observed. Consequently, empiric treatment with steroids was initiated achieving excellent results.
CONCLUSION IgG4-related disease may cause chronic inflammation of the pancreas and can condition pancreatic malignancies.
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Affiliation(s)
- Juan Glinka
- Department of General Surgery, Hepato-bilio-pancreatic Unit, Hospital Italiano de Buenos Aires, Buenos Aires C1181ACH, Argentina
| | - Francisco Calderón
- Department of General Surgery, Hepato-bilio-pancreatic Unit, Hospital Italiano de Buenos Aires, Buenos Aires C1181ACH, Argentina
| | - Martín de Santibañes
- Department of General Surgery, Hepato-bilio-pancreatic Unit, Hospital Italiano de Buenos Aires, Buenos Aires C1181ACH, Argentina
| | - Sung Ho Hyon
- Department of General Surgery, Image Guided Minimally Invasive Surgery Unit, Hospital Italiano de Buenos Aires, Buenos Aires C1181ACH, Argentina
| | - Adrián Gadano
- Hepatology Section, Hospital Italiano Buenos Aires, Buenos Aires C1181ACH, Argentina
| | - Eduardo Mullen
- Department of Surgical Pathology, Hospital Italiano de Buenos Aires, Buenos Aires C1181ACH, Argentina
| | - Melina Pol
- Department of Surgical Pathology, Hospital Italiano de Buenos Aires, Buenos Aires C1181ACH, Argentina
| | - Juan Spina
- Department of Radiology, Hospital Italiano de Buenos Aires, Buenos Aires C1181ACH, Argentina
| | - Eduardo de Santibañes
- Department of General Surgery, Hepato-bilio-pancreatic Unit, Hospital Italiano de Buenos Aires, Buenos Aires C1181ACH, Argentina
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Gonzalez HH, Skrove JL, Rosen S, Sobrado J. A Curious Case of Autoimmune Pancreatitis with IgG4-related Sclerosing Cholangitis. Cureus 2019; 11:e4153. [PMID: 31058036 PMCID: PMC6488342 DOI: 10.7759/cureus.4153] [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] [Indexed: 11/25/2022] Open
Abstract
Immunoglobulin G4-related sclerosing cholangitis (IgG4-SC) is a novel entity that belongs to the immune-mediated fibroinflammatory class of IgG4-related diseases (IgG4-RD). IgG4-SC is noted to be one of the most frequent manifestations of extra-pancreatic disease among IgG4-RD, which is significantly different from primary SC (PSC) and cholangiocarcinoma (CC) as is evident in the varied approaches to treatment. IgG4-RD includes IgG4-SC and autoimmune pancreatitis (AIP). Herein, we presented a case of IgG4-SC in a patient with obstructive jaundice secondary to AIP. We have also discussed the current recommendations for diagnostic and treatment modalities, with an emphasis on the issues that arise in obtaining a definitive classification of disease.
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Affiliation(s)
- Hector H Gonzalez
- Internal Medicine, Florida Atlantic University Charles E. Schmidt College of Medicine, Boca Raton, USA
| | - Jamie L Skrove
- Internal Medicine, Larkin Community Hospital, South Miami, USA
| | - Seth Rosen
- Gastroenterology, Larkin Community Hospital, South Miami, USA
| | - Javier Sobrado
- Internal Medicine, Larkin Community Hospital, South Miami, USA
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Pickhardt PJ. Gastrointestinal Imaging: Rapid Advancements Leading to Improved Patient Care. Gastroenterol Clin North Am 2018; 47:xv-xvii. [PMID: 30115446 DOI: 10.1016/j.gtc.2018.04.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Affiliation(s)
- Perry J Pickhardt
- Abdominal Imaging Section, Department of Radiology, University of Wisconsin School of Medicine & Public Health, 600 Highland Avenue, Madison, WI 53792, USA.
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