1
|
Kovačević K, Puškarić BJ, Kovačević DO. Imaging‑based diagnosis of intrapancreatic accessory spleen: A case report. Biomed Rep 2024; 21:114. [PMID: 38912170 PMCID: PMC11190635 DOI: 10.3892/br.2024.1801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 05/08/2024] [Indexed: 06/25/2024] Open
Abstract
During a routine ultrasound examination of the abdomen, a 60-year-old male patient was diagnosed with mass in the tail of the pancreas. However, computed tomography (CT) suggested that the lesion was an intrapancreatic accessory spleen (IPAS). IPAS is a congenital anomaly, which usually does not present with symptoms. IPAS occurs during embryologic splenic development when a portion of the splenic tissue fails to fuse with the main body of the spleen. IPAS does not require treatment, except when it is combined with idiopathic thrombocytopenic purpura. In the present case, the diagnosis of IPAS was confirmed using magnetic resonance imaging (MRI). On CT and MRI, the IPAS had a density and intensity comparable with that of the spleen in all plain and contrast-enhanced phases. Due to comorbidities, the patient refused further evaluation or surgery. The lesion was periodically monitored using CT every 1-2 years. Since the tumour was stable during the 7-year follow-up, it was concluded that it was an IPAS. In patients that cannot undergo surgery, a characteristic location (near the spleen) and imaging features (such as a 'zebra-patterned' enhancement in the arterial phase on CT and high signal intensity on diffusion-weighted imaging sequences on MRI, which is comparative to that of the normal spleen) may allow for a diagnose of IPAS with a high level of certainty. Being aware of this condition could aid a correct diagnosis of IPAS and prevent unnecessary surgery.
Collapse
Affiliation(s)
- Karla Kovačević
- Department of Diabetes and Endocrinology, Vuk Vrhovac University Clinic for Diabetes, Endocrinology and Metabolic Diseases, Merkur University Hospital, 10 000 Zagreb, Croatia
| | - Biljana Jelić Puškarić
- Department of Pathology and Cytology, Merkur University Hospital, 10 000 Zagreb, Croatia
| | - Dragica Obad Kovačević
- Department of Diagnostic and Interventional Radiology, Merkur University Hospital, 10 000 Zagreb, Croatia
| |
Collapse
|
2
|
Liu X, Li W, Qu J. Accessory spleen below the peritoneal reflection masquerading as metastatic rectal cancer: A case study. Asian J Surg 2024; 47:2880-2881. [PMID: 38383194 DOI: 10.1016/j.asjsur.2024.02.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Accepted: 02/07/2024] [Indexed: 02/23/2024] Open
Affiliation(s)
- Xuejing Liu
- Department of General Surgery, Aerospace Center Hospital, Beijing 100049, China
| | - Wenqiang Li
- Department of General Surgery, Aerospace Center Hospital, Beijing 100049, China
| | - Jun Qu
- Department of General Surgery, Aerospace Center Hospital, Beijing 100049, China.
| |
Collapse
|
3
|
Kashiwagi R, Ishida M, Onodera K, Aoki S, Iseki M, Miura T, Ohtsuka H, Mizuma M, Nakagawa K, Kamei T, Unno M. Laparoscopic excision of accessory spleen for recurrent autoimmune hemolytic anemia after splenectomy: a case report. Surg Case Rep 2024; 10:110. [PMID: 38700738 PMCID: PMC11068696 DOI: 10.1186/s40792-024-01884-z] [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: 10/20/2023] [Accepted: 04/01/2024] [Indexed: 05/06/2024] Open
Abstract
BACKGROUND Splenectomy is indicated in cases of autoimmune hemolytic anemia (AIHA), which are refractory to medical management. In post-splenectomy, there exists a theoretical risk of AIHA recurrence, especially if an accessory spleen undergoes compensatory hypertrophy. In this context, we present a unique case of recurrent AIHA managed through laparoscopic excision of the accessory spleen (LEAS). CASE PRESENTATION A 60-year-old male underwent laparoscopic splenectomy (LS) for AIHA refractory to standard medical therapies. Following the surgery, there was a marked improvement in hemolytic anemia symptoms, and oral steroid therapy was terminated 7 months post-LS. Nonetheless, a year after the LS, the patient exhibited a marked decline in hemoglobin levels, dropping to a concerning 5.8 g/dl, necessitating the reintroduction of oral steroids. A subsequent contrast-enhanced computed tomography (CT) scan unveiled an enlarged accessory spleen. The patient then underwent LEAS, during which the accessory spleen, obscured within adipose tissue, proved challenging to visualize laparoscopically. This obstacle was surmounted utilizing intraoperative ultrasonography (US), enabling successful excision of the accessory spleen. The post-surgical period progressed without complications, and the steroid dosage was reduced to one-twelfth of its initial preoperative quantity. CONCLUSIONS Recurrent AIHA can be instigated by post-splenectomy compensatory hypertrophy of the accessory spleen. Ensuring comprehensive splenic tissue excision is crucial in AIHA management to obviate recurrent stemming from hypertrophic remnants. In scenarios of AIHA recurrence tied to an enlarged accessory spleen, LEAS stands as a viable and effective therapeutic modality.
Collapse
Affiliation(s)
- Ryosuke Kashiwagi
- Department of Surgery, Tohoku University Graduate School of Medicine, 1-1 Seiryomachi, Aobaku, Sendai, Miyagi, 980-8574, Japan
- Division of Hepato-Biliary-Pancreatic Surgery, Shizuoka Cancer Center, 1007 Shimonagakubo, Nagaizumi-cho, Sunto-gun, Shizuoka, 411-8777, Japan
| | - Masaharu Ishida
- Department of Surgery, Tohoku University Graduate School of Medicine, 1-1 Seiryomachi, Aobaku, Sendai, Miyagi, 980-8574, Japan
| | - Koichi Onodera
- Department of Hematology, Tohoku University Hospital, 1-1 Seiryomachi, Aobaku, Sendai, Miyagi, 980-8574, Japan
| | - Shuichi Aoki
- Department of Surgery, Tohoku University Graduate School of Medicine, 1-1 Seiryomachi, Aobaku, Sendai, Miyagi, 980-8574, Japan
| | - Masahiro Iseki
- Department of Surgery, Tohoku University Graduate School of Medicine, 1-1 Seiryomachi, Aobaku, Sendai, Miyagi, 980-8574, Japan
| | - Takayuki Miura
- Department of Surgery, Tohoku University Graduate School of Medicine, 1-1 Seiryomachi, Aobaku, Sendai, Miyagi, 980-8574, Japan
| | - Hideo Ohtsuka
- Department of Surgery, Tohoku University Graduate School of Medicine, 1-1 Seiryomachi, Aobaku, Sendai, Miyagi, 980-8574, Japan
| | - Masamichi Mizuma
- Department of Surgery, Tohoku University Graduate School of Medicine, 1-1 Seiryomachi, Aobaku, Sendai, Miyagi, 980-8574, Japan
| | - Kei Nakagawa
- Department of Surgery, Tohoku University Graduate School of Medicine, 1-1 Seiryomachi, Aobaku, Sendai, Miyagi, 980-8574, Japan
| | - Takashi Kamei
- Department of Surgery, Tohoku University Graduate School of Medicine, 1-1 Seiryomachi, Aobaku, Sendai, Miyagi, 980-8574, Japan
| | - Michiaki Unno
- Department of Surgery, Tohoku University Graduate School of Medicine, 1-1 Seiryomachi, Aobaku, Sendai, Miyagi, 980-8574, Japan.
| |
Collapse
|
4
|
Tiutiuca RC, Nastase Puscasu AI, Stoenescu N, Moscalu M, Bradea C, Eva I, Lupascu CD, Ivan L, Palaghia MM, Prisecariu DI, Târcoveanu E, Vâță A, Bejan V, Vasilescu AM. Laparoscopic Approach to Primary Splenic Cyst: Case Report and Review of the Literature. Life (Basel) 2024; 14:120. [PMID: 38255735 PMCID: PMC10817520 DOI: 10.3390/life14010120] [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: 11/20/2023] [Revised: 12/27/2023] [Accepted: 01/12/2024] [Indexed: 01/24/2024] Open
Abstract
Splenic cysts are rare benign lesions of the spleen, often asymptomatic and incidentally discovered during imaging studies. While many splenic cysts remain asymptomatic and do not require intervention, surgical management becomes essential in cases of symptomatic cysts, large cysts, or when malignancy cannot be ruled out. Laparoscopic surgery has emerged as a minimally invasive and effective approach for treating splenic cysts, offering advantages such as shorter hospital stays, reduced postoperative pain, and faster recovery. In this case report, we describe our experience with laparoscopic surgery for a symptomatic splenic cyst in a young patient.
Collapse
Affiliation(s)
- Razvan Calin Tiutiuca
- Faculty of Medicine, University of Medicine and Farmacy “Gr. T. Popa” Iasi, 700115 Iasi, Romania (A.V.); (A.M.V.)
| | | | - Nicoleta Stoenescu
- Faculty of Psychology and Education Sciences, “Alexandru Ioan Cuza” University of Iași, 700506 Iasi, Romania
| | - Mihaela Moscalu
- Faculty of Medicine, University of Medicine and Farmacy “Gr. T. Popa” Iasi, 700115 Iasi, Romania (A.V.); (A.M.V.)
| | - Costel Bradea
- Faculty of Medicine, University of Medicine and Farmacy “Gr. T. Popa” Iasi, 700115 Iasi, Romania (A.V.); (A.M.V.)
| | - Iuliana Eva
- Radiology Department, “Dr Iacob Czihac” Military Emergency Hospital of Iași, 700483 Iasi, Romania
| | - Cristian Dumitru Lupascu
- Faculty of Medicine, University of Medicine and Farmacy “Gr. T. Popa” Iasi, 700115 Iasi, Romania (A.V.); (A.M.V.)
| | - Luminita Ivan
- Pathology Department, “Dr Iacob Czihac” Military Emergency Hospital of Iași, 700483 Iasi, Romania
| | - Madalina Maria Palaghia
- Faculty of Medicine, University of Medicine and Farmacy “Gr. T. Popa” Iasi, 700115 Iasi, Romania (A.V.); (A.M.V.)
| | - Denisa Ioana Prisecariu
- Faculty of Medicine, University of Medicine and Farmacy “Gr. T. Popa” Iasi, 700115 Iasi, Romania (A.V.); (A.M.V.)
| | - Eugen Târcoveanu
- Faculty of Medicine, University of Medicine and Farmacy “Gr. T. Popa” Iasi, 700115 Iasi, Romania (A.V.); (A.M.V.)
| | - Andrei Vâță
- Faculty of Medicine, University of Medicine and Farmacy “Gr. T. Popa” Iasi, 700115 Iasi, Romania (A.V.); (A.M.V.)
| | - Valentin Bejan
- Faculty of Medicine, University of Medicine and Farmacy “Gr. T. Popa” Iasi, 700115 Iasi, Romania (A.V.); (A.M.V.)
| | - Alin Mihai Vasilescu
- Faculty of Medicine, University of Medicine and Farmacy “Gr. T. Popa” Iasi, 700115 Iasi, Romania (A.V.); (A.M.V.)
| |
Collapse
|
5
|
Tokuyama K, Inoue Y, Matsunaga K, Hamaguchi Y, Sekimoto S. 99mTc-Sn-colloid SPECT/CT in thoracic splenosis after esophageal cancer surgery. ASIA OCEANIA JOURNAL OF NUCLEAR MEDICINE & BIOLOGY 2024; 12:61-64. [PMID: 38164233 PMCID: PMC10757057 DOI: 10.22038/aojnmb.2023.73907.1515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 08/23/2023] [Accepted: 08/23/2023] [Indexed: 01/03/2024]
Abstract
Splenosis occurs as a result of autotransplantation of splenic tissue following splenic injury or splenectomy. A 56-year-old man with esophageal cancer underwent thoracoscopic-assisted subtotal esophagectomy accompanied by three-field lymph node dissection, and retrosternal gastric tube reconstruction. The spleen was injured during the surgery and was removed. A retrosternal nodule of 12 mm in diameter was detected near the reconstructed gastric tube on computed tomography (CT) performed 3 years and 6 months postoperatively. Retrospectively, the nodule was observed in the same area on early postoperative CT and gradually increased in size. No accessory spleen was identified on the preoperative CT. Splenosis was suspected, and 99mTc-Sn-colloid single photon emission computed tomography (SPECT)/CT was performed. It revealed intense uptake in the retrosternal nodule, consistent with the diagnosis of thoracic splenosis. Subsequently, the patient has been under observation without treatment. 99mTc-labeled colloid SPECT/CT allowed confident diagnosis of thoracic splenosis following esophageal cancer surgery. This examination is considered valuable for the evaluation of ectopic splenic tissue.
Collapse
Affiliation(s)
- Kishin Tokuyama
- Department of Radiology, Kitasato University Hospital, Sagamihara, Kanagawa, Japan
| | - Yusuke Inoue
- Department of Radiology, Kitasato University Hospital, Sagamihara, Kanagawa, Japan
| | - Keiji Matsunaga
- Department of Radiology, Fuchinobe General Hospital, Sagamihara, Kanagawa, Japan
| | - Yasunori Hamaguchi
- Department of Radiology, Kitasato University Hospital, Sagamihara, Kanagawa, Japan
| | - Saori Sekimoto
- Department of Radiology, Kitasato University Hospital, Sagamihara, Kanagawa, Japan
| |
Collapse
|
6
|
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.
Collapse
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.)
| |
Collapse
|
7
|
Zhang Q, Liang X, Zhang Y, Nie H, Chen Z. A review of contrast-enhanced ultrasound using SonoVue® and Sonazoid™ in non-hepatic organs. Eur J Radiol 2023; 167:111060. [PMID: 37657380 DOI: 10.1016/j.ejrad.2023.111060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 08/08/2023] [Accepted: 08/21/2023] [Indexed: 09/03/2023]
Abstract
Contrast-enhanced ultrasound (CEUS) is a dependable modality for the diagnosis of various clinical conditions. A judicious selection of ultrasound contrast agent (UCA) is imperative for optimizing imaging and improving diagnosis. Approved UCAs for imaging the majority of organs include SonoVue, a pure blood agent, and Sonazoid, which exhibits an additional Kupffer phase. Despite the fact that the two UCAs are increasingly being employed, there is a lack of comparative reviews between the two agents in different organs diseases. This review represents the first attempt to compare the two UCAs in non-hepatic organs, primarily including breast, thyroid, pancreas, and spleen diseases. Through comparative analysis, this review provides a comprehensive and objective evaluation of the performance characteristics of SonoVue and Sonazoid, with the aim of offering valuable guidance for the clinical application of CEUS. Overall, further clinical evidences are required to compare and contrast the dissimilarities between the two UCAs in non-hepatic organs, enabling clinicians to make an appropriate selection based on actual clinical applications.
Collapse
Affiliation(s)
- Qing Zhang
- Institution of Medical Imaging, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, Changsha, China; Institution of Medical Imaging, University of South China, Hengyang, China; The Seventh Affiliated Hospital, Hengyang Medical School, University of South China, Changsha, China
| | - Xiaowen Liang
- Institution of Medical Imaging, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, Changsha, China; Institution of Medical Imaging, University of South China, Hengyang, China
| | - Yanfen Zhang
- Department of Ultrasound, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, Changsha, China
| | - Hongjun Nie
- Department of Ultrasound, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, Changsha, China
| | - Zhiyi Chen
- Institution of Medical Imaging, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, Changsha, China; Institution of Medical Imaging, University of South China, Hengyang, China.
| |
Collapse
|
8
|
Vitali F, Zundler S, Jesper D, Wildner D, Strobel D, Frulloni L, Neurath MF. Diagnostic Endoscopic Ultrasound in Pancreatology: Focus on Normal Variants and Pancreatic Masses. Visc Med 2023; 39:121-130. [PMID: 37899794 PMCID: PMC10601528 DOI: 10.1159/000533432] [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: 05/19/2023] [Accepted: 08/03/2023] [Indexed: 10/31/2023] Open
Abstract
Background Endoscopic ultrasound (EUS) is a main tool in gastroenterology for both diagnosis and exclusion of pancreatic pathology. It allows minimally invasive assessment of various diseases or anatomic variations affecting the pancreas also with the help of new Doppler technologies, elastography, contrast-enhanced imaging including post hoc image processing with quantification analyses, three-dimensional reconstruction, and artificial intelligence. EUS also allows interventional direct access to the pancreatic parenchyma and the retroperitoneal space, to the pancreatic duct, pancreatic masses, cysts, and vascular structures. Summary This review aimed to summarize new developments of EUS in the field of pancreatology. We highlight the role of EUS in evaluating pancreatic pathology by describing normal anatomic variants like pancreas divisum, pancreatic lipomatosis, pancreatic fibrosis in the elderly and characterizing pancreatic masses, both in the context of chronic pancreatitis and within healthy pancreatic parenchyma. EUS is considered the optimal imaging modality for pancreatic masses of uncertain dignity and allows both cytological diagnosis and histology, which is essential not only for neoplastic conditions but also for tailoring therapy for benign inflammatory conditions. Key Messages EUS plays an indispensable role in pancreatology and the development of new diagnostic and interventional approaches to the retroperitoneal space and the pancreas exponentially increased over the last years. The development of computer-aided diagnosis and artificial intelligence algorithms hold the potential to overcome the obstacles associated with interobserver variability and will most likely support decision-making in the management of pancreatic disease.
Collapse
Affiliation(s)
- Francesco Vitali
- Department of Medicine 1, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Sebastian Zundler
- Department of Medicine 1, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Daniel Jesper
- Department of Medicine 1, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Dane Wildner
- Department of Medicine 1, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Deike Strobel
- Department of Medicine 1, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Luca Frulloni
- Department of Medicine, Gastroenterology Unit, Pancreas Center, University of Verona, Verona, Italy
| | - Markus F. Neurath
- Department of Medicine 1, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| |
Collapse
|
9
|
Veron Sanchez A, Santamaria Guinea N, Cayon Somacarrera S, Bennouna I, Pezzullo M, Bali MA. Rare Solid Pancreatic Lesions on Cross-Sectional Imaging. Diagnostics (Basel) 2023; 13:2719. [PMID: 37627978 PMCID: PMC10453474 DOI: 10.3390/diagnostics13162719] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/15/2023] [Accepted: 08/18/2023] [Indexed: 08/27/2023] Open
Abstract
Several solid lesions can be found within the pancreas mainly arising from the exocrine and endocrine pancreatic tissue. Among all pancreatic malignancies, the most common subtype is pancreatic ductal adenocarcinoma (PDAC), to a point that pancreatic cancer and PDAC are used interchangeably. But, in addition to PDAC, and to the other most common and well-known solid lesions, either related to benign conditions, such as pancreatitis, or not so benign, such as pancreatic neuroendocrine neoplasms (pNENs), there are solid pancreatic lesions considered rare due to their low incidence. These lesions may originate from a cell line with a differentiation other than exocrine/endocrine, such as from the nerve sheath as for pancreatic schwannoma or from mesenchymal cells as for solitary fibrous tumour. These rare solid pancreatic lesions may show a behaviour that ranges in a benign to highly aggressive malignant spectrum. This review includes cases of an intrapancreatic accessory spleen, pancreatic tuberculosis, solid serous cystadenoma, solid pseudopapillary tumour, pancreatic schwannoma, purely intraductal neuroendocrine tumour, pancreatic fibrous solitary tumour, acinar cell carcinoma, undifferentiated carcinoma with osteoclastic-like giant cells, adenosquamous carcinoma, colloid carcinoma of the pancreas, primary leiomyosarcoma of the pancreas, primary and secondary pancreatic lymphoma and metastases within the pancreas. Therefore, it is important to determine the correct diagnosis to ensure optimal patient management. Because of their rarity, their existence is less well known and, when depicted, in most cases incidentally, the correct diagnosis remains challenging. However, there are some typical imaging features present on cross-sectional imaging modalities that, taken into account with the clinical and biological context, contribute substantially to achieve the correct diagnosis.
Collapse
Affiliation(s)
- Ana Veron Sanchez
- Hôpital Universitaire de Bruxelles, Institut Jules Bordet, 1070 Brussels, Belgium; (I.B.)
| | | | | | - Ilias Bennouna
- Hôpital Universitaire de Bruxelles, Institut Jules Bordet, 1070 Brussels, Belgium; (I.B.)
| | - Martina Pezzullo
- Hôpital Universitaire de Bruxelles, Hôpital Erasme, 1070 Brussels, Belgium
| | - Maria Antonietta Bali
- Hôpital Universitaire de Bruxelles, Institut Jules Bordet, 1070 Brussels, Belgium; (I.B.)
| |
Collapse
|
10
|
Ren S, Guo K, Li Y, Cao YY, Wang ZQ, Tian Y. Diagnostic accuracy of apparent diffusion coefficient to differentiate intrapancreatic accessory spleen from pancreatic neuroendocrine tumors. World J Gastrointest Oncol 2023; 15:1051-1061. [PMID: 37389113 PMCID: PMC10302999 DOI: 10.4251/wjgo.v15.i6.1051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/01/2023] [Accepted: 04/19/2023] [Indexed: 06/14/2023] Open
Abstract
BACKGROUND Intrapancreatic accessory spleen (IPAS) shares similar imaging findings with hypervascular pancreatic neuroendocrine tumors (PNETs), which may lead to unnecessary surgery.
AIM To investigate and compare the diagnostic performance of absolute apparent diffusion coefficient (ADC) and normalized ADC (lesion-to-spleen ADC ratios) in the differential diagnosis of IPAS from PNETs.
METHODS A retrospective study consisting of 29 patients (16 PNET patients vs 13 IPAS patients) who underwent preoperative contrast-enhanced magnetic resonance imaging together with diffusion-weighted imaging/ADC maps between January 2017 and July 2020 was performed. Two independent reviewers measured ADC on all lesions and spleens, and normalized ADC was calculated for further analysis. The receiver operating characteristics analysis was carried out for evaluating the diagnostic performance of both absolute ADC and normalized ADC values in the differential diagnosis between IPAS and PNETs by clarifying sensitivity, specificity, and accuracy. Inter-reader reliability for the two methods was evaluated.
RESULTS IPAS had a significantly lower absolute ADC (0.931 ± 0.773 × 10-3 mm2/s vs 1.254 ± 0.219 × 10-3 mm2/s) and normalized ADC value (1.154 ± 0.167 vs 1.591 ± 0.364) compared to PNET. A cutoff value of 1.046 × 10-3 mm2/s for absolute ADC was associated with 81.25% sensitivity, 100% specificity, and 89.66% accuracy with an area under the curve of 0.94 (95% confidence interval: 0.8536-1.000) for the differential diagnosis of IPAS from PNET. Similarly, a cutoff value of 1.342 for normalized ADC was associated with 81.25% sensitivity, 92.31% specificity, and 86.21% accuracy with an area under the curve of 0.91 (95% confidence interval: 0.8080-1.000) for the differential diagnosis of IPAS from PNET. Both methods showed excellent inter-reader reliability with intraclass correlation coefficients for absolute ADC and ADC ratio being 0.968 and 0.976, respectively.
CONCLUSION Both absolute ADC and normalized ADC values can facilitate the differentiation between IPAS and PNET.
Collapse
Affiliation(s)
- Shuai Ren
- Department of Radiology, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, Jiangsu Province, China
| | - Kai Guo
- Department of Radiology, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, Jiangsu Province, China
| | - Yuan Li
- Department of Radiology, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, Jiangsu Province, China
| | - Ying-Ying Cao
- Department of Radiology, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, Jiangsu Province, China
| | - Zhong-Qiu Wang
- Department of Radiology, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, Jiangsu Province, China
| | - Ying Tian
- Department of Radiology, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, Jiangsu Province, China
| |
Collapse
|
11
|
M S P, Matthew C, Rajendran RR. Accessory Spleen Mimicking an Intrahepatic Neoplasm: A Rare Case Report. Cureus 2023; 15:e39185. [PMID: 37332428 PMCID: PMC10276632 DOI: 10.7759/cureus.39185] [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] [Accepted: 05/17/2023] [Indexed: 06/20/2023] Open
Abstract
Accessory spleen and splenosis are two types of ectopic spleen. An accessory spleen can be found in various sites in the abdomen, but an intrahepatic accessory spleen is very rare though many case reports of intrahepatic splenosis are available. This case report presents the incidental diagnosis of accessory spleen in the liver of a 57-year-old male while undergoing laparoscopic diaphragmatic repair. The patient had a history of splenectomy 27 years ago for hereditary spherocytosis, but his routine haemogram did not show any features of the ectopic splenic function. Intraoperatively, a mass was suspected in the liver and was resected. Histopathology revealed an accessory spleen with well-preserved red and white pulp architecture. Though a history of splenectomy suggested a diagnosis of splenosis, a well-encapsulated and preserved splenic architecture confirmed the diagnosis of accessory spleen. Accessory spleen or splenosis can be diagnosed radiologically using Tc-99m-labeled heat-denatured red blood cells (HRBC) and Tc-99m sulfur colloid scans, but the gold standard is histopathological examination. Ectopic spleen is mostly asymptomatic but usually results in unnecessary surgeries as it is difficult to differentiate from benign or malignant tumors. Thus, a high degree of suspicion and awareness is necessary for early and prompt diagnosis.
Collapse
Affiliation(s)
- Peethambaran M S
- Gastrointestinal Surgery, Avitis Institute of Medical Sciences, Palakkad, IND
| | | | | |
Collapse
|
12
|
The Role of MRI in the Diagnosis of Solid Pseudopapillary Neoplasm of the Pancreas and Its Mimickers: A Case-Based Review with Emphasis on Differential Diagnosis. Diagnostics (Basel) 2023; 13:diagnostics13061074. [PMID: 36980388 PMCID: PMC10046973 DOI: 10.3390/diagnostics13061074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 03/05/2023] [Accepted: 03/09/2023] [Indexed: 03/15/2023] Open
Abstract
Solid pseudopapillary neoplasm (SPN) is rare pancreatic tumor occurring most commonly in young females. The typical imaging appearance of SPN is of well-defined, encapsulated, and large heterogeneous tumors, consisting of solid and cystic components due to various degrees of intralesional hemorrhage and necrosis. However, atypical imaging presentation in the form of small solid tumors or uniformly cystic lesions might also be seen, which can be explained by specific pathological characteristics. Other imaging features such as a round shape, the absence of main pancreatic duct dilatation, and slow growth, in combination with vague symptoms, favor the diagnosis of SPNs. Nevertheless, the radiological findings of SPN might overlap with other solid and cystic pancreatic neoplasms, such as neuroendocrine tumors, serous and mucinous neoplasms, and even small pancreatic adenocarcinomas. In addition, a few benign non-tumorous conditions including walled-of-necrosis, and intrapancreatic accessory spleen may also pose diagnostic dilemmas simulating SPNs on imaging studies. The aim of this manuscript is to provide a comprehensive overview of the typical and atypical imaging features of SPNs and to describe useful tips for differential diagnosis with its potential mimickers.
Collapse
|
13
|
Jang YS, Kim SS, Shin HC, Choi SY, Park CH, Lee HN, Kim SY, Park H, Kim YT. Various congenital anomalies and anatomical variations of the spleen: a multimodality pictorial review. Abdom Radiol (NY) 2023; 48:1505-1513. [PMID: 36790453 DOI: 10.1007/s00261-023-03826-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 01/17/2023] [Accepted: 01/18/2023] [Indexed: 02/16/2023]
Abstract
There are various congenital anomalies and anatomical variations of the spleen (CAAVS). CAAVS are common and are often associated with systemic anomalies. Widespread use of computed tomography and magnetic resonance imaging in a variety of clinical situations has increased the detection of CAAVS. However, CAAVS are frequently overlooked and are occasionally misdiagnosed as pathologic disease entities. This article aimed to review the various manifestations of CAAVS with radiologic findings.
Collapse
Affiliation(s)
- Young Sil Jang
- Department of Radiology, Soonchunhyang University College of Medicine, Cheonan Hospital, 31 Soonchunhyang6-gil, Dongnam-gu, Cheonan-si, Chungcheongnam-do, 330-721, Republic of Korea
| | - Seung Soo Kim
- Department of Radiology, Soonchunhyang University College of Medicine, Cheonan Hospital, 31 Soonchunhyang6-gil, Dongnam-gu, Cheonan-si, Chungcheongnam-do, 330-721, Republic of Korea.
| | - Hyeong Cheol Shin
- Department of Radiology, Soonchunhyang University College of Medicine, Cheonan Hospital, 31 Soonchunhyang6-gil, Dongnam-gu, Cheonan-si, Chungcheongnam-do, 330-721, Republic of Korea
| | - Seo-Youn Choi
- Department of Radiology, Soonchunhyang University College of Medicine, Bucheon Hospital, Bucheon-si, Republic of Korea
| | - Chan Ho Park
- Department of Radiology, Soonchunhyang University College of Medicine, Cheonan Hospital, 31 Soonchunhyang6-gil, Dongnam-gu, Cheonan-si, Chungcheongnam-do, 330-721, Republic of Korea
| | - Hyoung Nam Lee
- Department of Radiology, Soonchunhyang University College of Medicine, Cheonan Hospital, 31 Soonchunhyang6-gil, Dongnam-gu, Cheonan-si, Chungcheongnam-do, 330-721, Republic of Korea
| | - Shin Young Kim
- Department of Radiology, Soonchunhyang University College of Medicine, Cheonan Hospital, 31 Soonchunhyang6-gil, Dongnam-gu, Cheonan-si, Chungcheongnam-do, 330-721, Republic of Korea
| | - Hyerim Park
- Department of Radiology, Soonchunhyang University College of Medicine, Cheonan Hospital, 31 Soonchunhyang6-gil, Dongnam-gu, Cheonan-si, Chungcheongnam-do, 330-721, Republic of Korea
| | - Young Tong Kim
- Department of Radiology, Soonchunhyang University College of Medicine, Cheonan Hospital, 31 Soonchunhyang6-gil, Dongnam-gu, Cheonan-si, Chungcheongnam-do, 330-721, Republic of Korea
| |
Collapse
|
14
|
Chiu YT, Tseng LW, Chang CY. A Pancreatic Tumor With Homogeneous Hyper-Enhancement Under Contrast-Enhanced Endosonography Showing an Unexpected Pathology Finding. Gastroenterology 2022; 163:e20-e21. [PMID: 35716772 DOI: 10.1053/j.gastro.2022.06.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Accepted: 06/08/2022] [Indexed: 12/02/2022]
Affiliation(s)
- Yu-Tse Chiu
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Fu Jen Catholic University Hospital, New Taipei City, Taiwan, Republic of China.
| | - Liang-Wei Tseng
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Fu Jen Catholic University Hospital, New Taipei City, Taiwan, Republic of China
| | - Chi-Yang Chang
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Fu Jen Catholic University Hospital, New Taipei City, Taiwan, Republic of China
| |
Collapse
|
15
|
Hou S, Cheng B, Gao Z, Ye Y. Congenital accessory spleen in the fundus of stomach mimicking a gastrointestinal stromal tumor. Asian J Surg 2022; 46:1585-1586. [PMID: 36688237 DOI: 10.1016/j.asjsur.2022.09.147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 09/29/2022] [Indexed: 01/24/2023] Open
Affiliation(s)
- Sen Hou
- Department of Gastrointestinal Surgery, Peking University People`s Hospital, Beijing, 100044, PR China; Laboratory of Surgical Oncology, Peking University People`s Hospital, Beijing, 100044, PR China.
| | - Baosen Cheng
- Department of Gastrointestinal Surgery, Peking University People`s Hospital, Beijing, 100044, PR China; Laboratory of Surgical Oncology, Peking University People`s Hospital, Beijing, 100044, PR China.
| | - Zhidong Gao
- Department of Gastrointestinal Surgery, Peking University People`s Hospital, Beijing, 100044, PR China; Laboratory of Surgical Oncology, Peking University People`s Hospital, Beijing, 100044, PR China; Beijing Key Laboratory of Colorectal Cancer Diagnosis and Treatment Research, Peking University People`s Hospital, Beijing, 100044, PR China.
| | - Yingjiang Ye
- Department of Gastrointestinal Surgery, Peking University People`s Hospital, Beijing, 100044, PR China; Laboratory of Surgical Oncology, Peking University People`s Hospital, Beijing, 100044, PR China; Beijing Key Laboratory of Colorectal Cancer Diagnosis and Treatment Research, Peking University People`s Hospital, Beijing, 100044, PR China.
| |
Collapse
|
16
|
Kim JW, Kim KA, Sim KC, Lee J, Park BN, Song MJ, Park YS, Lee J, Choi JW, Lee CH. Ectopic lesions in the abdomen and pelvis: a multimodality pictorial review. Abdom Radiol (NY) 2022; 47:2254-2276. [PMID: 35441342 DOI: 10.1007/s00261-022-03520-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 04/02/2022] [Accepted: 04/04/2022] [Indexed: 11/29/2022]
Abstract
Various ectopic lesions occur in the abdomen and pelvis and affect multiple organs including liver, gallbladder, pancreas, spleen, and organs of the genitourinary system. Ectopic organs may be present outside their normal positions, or ectopic tissues may develop while the original organ exists in its normal position. Both benign and malignant lesions can occur in ectopic organs and tissues. Owing to their unusual location, they can often be misdiagnosed as other lesions or even malignant lesions, such as metastasis or seeding. This multimodality pictorial review provides various cases of ectopic lesions in the abdomen and pelvis, which will help narrow the differential diagnosis and guide clinical decision-making.
Collapse
Affiliation(s)
- Jeong Woo Kim
- Department of Radiology, Korea University Guro Hospital, Korea University College of Medicine, 148 Gurodong-ro, Guro-gu, Seoul, 08380, Korea
| | - Kyeong Ah Kim
- Department of Radiology, Korea University Guro Hospital, Korea University College of Medicine, 148 Gurodong-ro, Guro-gu, Seoul, 08380, Korea.
| | - Ki Choon Sim
- Department of Radiology, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Korea
| | - Jisun Lee
- Department of Radiology, Chungbuk National University Hospital, Chungbuk National University College of Medicine, Cheongju, Korea
| | - Bit Na Park
- Department of Radiology, Korea University Guro Hospital, Korea University College of Medicine, 148 Gurodong-ro, Guro-gu, Seoul, 08380, Korea
| | - Mi Jin Song
- Department of Radiology, Korea University Guro Hospital, Korea University College of Medicine, 148 Gurodong-ro, Guro-gu, Seoul, 08380, Korea
| | - Yang Shin Park
- Department of Radiology, Korea University Guro Hospital, Korea University College of Medicine, 148 Gurodong-ro, Guro-gu, Seoul, 08380, Korea
| | - Jongmee Lee
- Department of Radiology, Korea University Guro Hospital, Korea University College of Medicine, 148 Gurodong-ro, Guro-gu, Seoul, 08380, Korea
| | - Jae Woong Choi
- Department of Radiology, Korea University Guro Hospital, Korea University College of Medicine, 148 Gurodong-ro, Guro-gu, Seoul, 08380, Korea
| | - Chang Hee Lee
- Department of Radiology, Korea University Guro Hospital, Korea University College of Medicine, 148 Gurodong-ro, Guro-gu, Seoul, 08380, Korea
| |
Collapse
|
17
|
Smith HC, Kakar N, Shadid AM. Accessory Spleen Masquerading as an Intrapancreatic Tumor: A Case Report. Cureus 2022; 14:e24677. [PMID: 35663712 PMCID: PMC9159715 DOI: 10.7759/cureus.24677] [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] [Accepted: 05/02/2022] [Indexed: 11/05/2022] Open
Abstract
The finding of splenic tissue within the pancreas, also known as splenosis or intrapancreatic accessory spleen (IPAS), is a relatively uncommon condition that presents as an intrapancreatic mass. The discovery of an intrapancreatic mass often prompts a thorough diagnostic workup for a primary pancreatic malignancy, often exposing patients to unnecessary risks associated with invasive testing and even surgery. The benign, asymptomatic nature of this finding places emphasis on utilizing non-invasive techniques for confirmation of the diagnosis, reducing risks of morbidity and mortality in this patient population. Contrast-enhanced computed tomography (CT) and magnetic resonance imaging (MRI) will display near-identical signal intensities (SI) between the spleen and the intrapancreatic mass, as well as identical contrast-enhancement patterns. Nuclear medicine evaluation with Tc-99m heat-damaged red blood cells (HDRBCs) is often used as a confirmatory test and allows for differentiation from malignancies.
Collapse
Affiliation(s)
- Harrison C Smith
- Medical School, Nova Southeastern University Dr. Kiran C. Patel College of Osteopathic Medicine, Fort Lauderdale, USA
| | - Nandita Kakar
- Medical School, Nova Southeastern University Dr. Kiran C. Patel College of Osteopathic Medicine, Fort Lauderdale, USA
| | | |
Collapse
|
18
|
Smoot T, Revels J, Soliman M, Liu P, Menias CO, Hussain HH, Savas H, Gaballah AH. Abdominal and pelvic splenosis: atypical findings, pitfalls, and mimics. Abdom Radiol (NY) 2022; 47:923-947. [PMID: 35076742 DOI: 10.1007/s00261-021-03402-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 12/22/2021] [Accepted: 12/24/2021] [Indexed: 01/28/2023]
Abstract
Splenosis is an acquired form of ectopic splenic tissue that typically arises after trauma or splenectomy. It is often an incidental image finding in an otherwise asymptomatic patient, but the spectrum of symptoms varies based on the site of implantation. Radiologists should be familiar with the imaging features of splenosis to avoid mistaking it for malignancy. Splenosis has identical imaging features to that of the native spleen on US, CT, MRI, and nuclear medicine examinations. Therefore, when the radiologic findings support the diagnosis of splenosis, the patient can be spared invasive procedures for tissue sampling.
Collapse
Affiliation(s)
- Travis Smoot
- Department of Diagnostic Radiology, University of Missouri, One Hospital Dr. Columbia, Columbia, MO, 65212, USA
| | - Jonathan Revels
- Department of Radiology, University of New Mexico, Albuquerque, NM, USA
| | - Moataz Soliman
- Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, IL, 48109, USA
| | - Peter Liu
- Department of Radiology, Cleveland Clinic, Cleveland, OH, USA
| | | | - Hero H Hussain
- Department of Radiology, University of Michigan, Ann Arbor, MI, USA
| | - Hatice Savas
- Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, IL, 48109, USA
| | - Ayman H Gaballah
- Department of Diagnostic Radiology, University of Missouri, One Hospital Dr. Columbia, Columbia, MO, 65212, USA.
| |
Collapse
|
19
|
Huang JY, Yang R, Li JW, Lu Q, Luo Y. Cavernous hemangioma of an intrapancreatic accessory spleen mimicking a pancreatic tumor: A case report. World J Clin Cases 2022; 10:1973-1980. [PMID: 35317146 PMCID: PMC8891771 DOI: 10.12998/wjcc.v10.i6.1973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 11/02/2021] [Accepted: 01/10/2022] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Intrapancreatic accessory spleen (IPAS) is an uncommon condition, with the majority of cases presenting as solid lesions. Thus, this condition is frequently misdiagnosed as pancreatic solid neoplasm. Moreover, splenic cavernous hemangioma is a rare disorder, whereas lesions with a cystic appearance arising from IPAS have not been reported.
CASE SUMMARY Herein, we present a case involving a 32-year-old male who had a complex cystic lesion in the tail of the pancreas revealed by conventional ultrasound. The lesion was misdiagnosed as a pancreatic cystadenoma because of its confusing anatomic location, as well as due to its peripheral nodular and internal septal enhancement patterns on contrast-enhanced ultrasound. After multidisciplinary discussion, the patient finally underwent laparoscopic pancreatic body and tail resections. Postoperative pathology demonstrated the lesion to be a cavernous hemangioma arising from the IPAS.
CONCLUSION Cavernous hemangioma in the intrapancreatic accessory spleen may mimic pancreatic cystadenoma, which is a condition with the potential to be malignant. Imaging follow-ups or surgical interventions may be helpful for the exclusion of malignant risks in complicated cystic lesions, especially those with parietal and septal enhancements.
Collapse
Affiliation(s)
- Jia-Yan Huang
- Department of Medical Ultrasound, West China Hospital of Sichuan University, Chengdu 610041, Sichuan Province, China
| | - Rui Yang
- Department of Medical Ultrasound, West China Hospital of Sichuan University, Chengdu 610041, Sichuan Province, China
| | - Jia-Wu Li
- Department of Medical Ultrasound, West China Hospital of Sichuan University, Chengdu 610041, Sichuan Province, China
| | - Qiang Lu
- Department of Medical Ultrasound, West China Hospital of Sichuan University, Chengdu 610041, Sichuan Province, China
| | - Yan Luo
- Department of Medical Ultrasound, West China Hospital of Sichuan University, Chengdu 610041, Sichuan Province, China
| |
Collapse
|
20
|
Wee JJ, Vu CKF, Ding CSL, Shelat VG. Intrapancreatic accessory spleen with an epidermoid cyst: a malignant mimicry. BMJ Case Rep 2022; 15:e247737. [PMID: 35165128 PMCID: PMC8845195 DOI: 10.1136/bcr-2021-247737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/26/2022] [Indexed: 02/05/2023] Open
Abstract
With the liberal use of CT scan for clinical diagnosis, clinicians are faced with an increasing number of pancreatic incidentalomas. Compared with other incidentalomas, pancreatic incidentalomas have higher chances of future malignant transformation. There are many differential diagnoses, and epidermoid cyst in an intrapancreatic accessory spleen (ECIPAS) is extremely rare, with only a handful of reports. Preoperative diagnosis is often complicated, and the final diagnosis is usually only made after surgical resection.We report a 34-year-old man who had an incidentally noted 2.8 cm pancreatic tail cystic lesion on a CT scan done for urinary symptoms. The lesion had a solid nodular component that was worrisome for malignancy, and the patient underwent further evaluation with an MRI scan and endoscopic ultrasound of the pancreas. The differential diagnoses of cystic degeneration of neuroendocrine tumour, branch-duct intraductal papillary mucinous neoplasm with worrisome features or ectopic intrapancreatic spleen were made. A multidisciplinary tumour board recommended surgical resection given risk features of malignancy. The patient subsequently underwent a laparoscopic distal pancreatectomy with splenectomy, and histology confirmed the diagnosis of ECIPAS.Imaging characteristics of ECIPAS are non-specific, and most patients have a diagnosis made only after surgery. Therefore, more evidence is warranted for accurate preoperative imaging diagnosis to avoid unnecessary pancreatic surgery, which is not without its risks.
Collapse
Affiliation(s)
- Jia Jia Wee
- General Surgery, Tan Tock Seng Hospital, Singapore
| | | | | | | |
Collapse
|
21
|
Qiu L, Trout AT, Ayyala RS, Szabo S, Nathan JD, Geller JI, Dillman JR. Pancreatic Masses in Children and Young Adults: Multimodality Review with Pathologic Correlation. Radiographics 2021; 41:1766-1784. [PMID: 34597223 DOI: 10.1148/rg.2021210008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Masses and masslike lesions of the pancreas are uncommon in the pediatric population. However, owing to overlapping clinical and imaging features, it can be challenging to differentiate the various causes of pediatric pancreatic masses at initial patient presentation. Clinical data such as patient age, signs and symptoms at presentation, laboratory test results, and potential underlying cancer predisposition syndrome can be helpful when formulating a differential diagnosis. US may be the first imaging study to depict a pancreatic mass in a child, as this examination is frequently performed in children with nonspecific abdominal signs and symptoms because of its wide availability and relatively low cost and the lack of a need for sedation or anesthesia. CT or MRI is typically required for more thorough characterization of the mass and surgical planning. Complete characterization of pancreatic masses includes assessment of vascular involvement, local invasion, and extrapancreatic spread of tumor. The authors provide an up-to-date comprehensive review of the clinical manifestations, histopathologic features, and imaging findings of primary and secondary tumors of the pancreas in children and young adults. Advances in imaging, current prognostic information, and treatment paradigms also are highlighted. Finally, nontumorous masslike lesions of the pediatric pancreas, including vascular malformations, cystic disorders (eg, von Hippel-Lindau syndrome, cystic fibrosis), intrapancreatic accessory spleen, and autoimmune pancreatitis, are discussed. Online supplemental material is available for this article. ©RSNA, 2021.
Collapse
Affiliation(s)
- Lisa Qiu
- From the Department of Radiology (L.Q., A.T.T., R.S.A., J.R.D.), Department of Pathology (S.S.), Division of Pediatric General and Thoracic Surgery (J.D.N.), and Division of Oncology (J.I.G.), Cincinnati Children's Hospital Medical Center, MLC 5031, 3333 Burnet Ave, Cincinnati, OH 45229; and Departments of Radiology (A.T.T., R.S.A., J.R.D.), Pediatrics (A.T.T., J.I.G.), Pathology (S.S.), and Surgery (J.D.N.), University of Cincinnati College of Medicine, University of Cincinnati, Cincinnati, Ohio
| | - Andrew T Trout
- From the Department of Radiology (L.Q., A.T.T., R.S.A., J.R.D.), Department of Pathology (S.S.), Division of Pediatric General and Thoracic Surgery (J.D.N.), and Division of Oncology (J.I.G.), Cincinnati Children's Hospital Medical Center, MLC 5031, 3333 Burnet Ave, Cincinnati, OH 45229; and Departments of Radiology (A.T.T., R.S.A., J.R.D.), Pediatrics (A.T.T., J.I.G.), Pathology (S.S.), and Surgery (J.D.N.), University of Cincinnati College of Medicine, University of Cincinnati, Cincinnati, Ohio
| | - Rama S Ayyala
- From the Department of Radiology (L.Q., A.T.T., R.S.A., J.R.D.), Department of Pathology (S.S.), Division of Pediatric General and Thoracic Surgery (J.D.N.), and Division of Oncology (J.I.G.), Cincinnati Children's Hospital Medical Center, MLC 5031, 3333 Burnet Ave, Cincinnati, OH 45229; and Departments of Radiology (A.T.T., R.S.A., J.R.D.), Pediatrics (A.T.T., J.I.G.), Pathology (S.S.), and Surgery (J.D.N.), University of Cincinnati College of Medicine, University of Cincinnati, Cincinnati, Ohio
| | - Sara Szabo
- From the Department of Radiology (L.Q., A.T.T., R.S.A., J.R.D.), Department of Pathology (S.S.), Division of Pediatric General and Thoracic Surgery (J.D.N.), and Division of Oncology (J.I.G.), Cincinnati Children's Hospital Medical Center, MLC 5031, 3333 Burnet Ave, Cincinnati, OH 45229; and Departments of Radiology (A.T.T., R.S.A., J.R.D.), Pediatrics (A.T.T., J.I.G.), Pathology (S.S.), and Surgery (J.D.N.), University of Cincinnati College of Medicine, University of Cincinnati, Cincinnati, Ohio
| | - Jaimie D Nathan
- From the Department of Radiology (L.Q., A.T.T., R.S.A., J.R.D.), Department of Pathology (S.S.), Division of Pediatric General and Thoracic Surgery (J.D.N.), and Division of Oncology (J.I.G.), Cincinnati Children's Hospital Medical Center, MLC 5031, 3333 Burnet Ave, Cincinnati, OH 45229; and Departments of Radiology (A.T.T., R.S.A., J.R.D.), Pediatrics (A.T.T., J.I.G.), Pathology (S.S.), and Surgery (J.D.N.), University of Cincinnati College of Medicine, University of Cincinnati, Cincinnati, Ohio
| | - James I Geller
- From the Department of Radiology (L.Q., A.T.T., R.S.A., J.R.D.), Department of Pathology (S.S.), Division of Pediatric General and Thoracic Surgery (J.D.N.), and Division of Oncology (J.I.G.), Cincinnati Children's Hospital Medical Center, MLC 5031, 3333 Burnet Ave, Cincinnati, OH 45229; and Departments of Radiology (A.T.T., R.S.A., J.R.D.), Pediatrics (A.T.T., J.I.G.), Pathology (S.S.), and Surgery (J.D.N.), University of Cincinnati College of Medicine, University of Cincinnati, Cincinnati, Ohio
| | - Jonathan R Dillman
- From the Department of Radiology (L.Q., A.T.T., R.S.A., J.R.D.), Department of Pathology (S.S.), Division of Pediatric General and Thoracic Surgery (J.D.N.), and Division of Oncology (J.I.G.), Cincinnati Children's Hospital Medical Center, MLC 5031, 3333 Burnet Ave, Cincinnati, OH 45229; and Departments of Radiology (A.T.T., R.S.A., J.R.D.), Pediatrics (A.T.T., J.I.G.), Pathology (S.S.), and Surgery (J.D.N.), University of Cincinnati College of Medicine, University of Cincinnati, Cincinnati, Ohio
| |
Collapse
|
22
|
Wang H, So H, Nah YW, Kim M, Lee TY, Seo M, Bang SJ. Acute Abdominal Pain due to Accessory Splenic Infarction in an Adult: A Case Report. THE KOREAN JOURNAL OF GASTROENTEROLOGY = TAEHAN SOHWAGI HAKHOE CHI 2021; 78:183-187. [PMID: 34565788 DOI: 10.4166/kjg.2021.071] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 05/27/2021] [Accepted: 05/27/2021] [Indexed: 02/05/2023]
Abstract
Accessory spleens are common congenital anatomic variations that are usually asymptomatic. On the other hand, they can be clinically significant if complicated by hemorrhage, torsion, or infarction. This paper describes a case of an infarcted accessory spleen in a 30-year-old male who presented with abdominal pain. Abdominal CT and MRI revealed an isolated mass, 4.5 cm in size, in the perisplenic area. An infarcted accessory spleen was suspected. The patient underwent laparoscopic accessory splenectomy. Histopathology identified the mass as splenic tissue that had undergone ischemic necrosis. A definitive diagnosis of an infarcted accessory spleen was made, and the patient was discharged on day 5 after surgery symptom-free.
Collapse
Affiliation(s)
- Hoyoung Wang
- Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Hoonsub So
- Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Yang Won Nah
- Department of Surgery, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Misung Kim
- Department of Pathology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Tae Young Lee
- Department of Radiology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Minjung Seo
- Department of Nuclear Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Sung-Jo Bang
- Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| |
Collapse
|
23
|
Fung CI, Bigam DL, Wong CKW, Hurrell C, Bird JR, Brahm GL, Kirkpatrick IDC. Recommendations for the Management of Incidental Pancreatic Findings in Adults by the Canadian Association of Radiologists Incidental Findings Working Group. Can Assoc Radiol J 2021; 73:312-319. [PMID: 34154391 DOI: 10.1177/08465371211021079] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The Canadian Association of Radiologists Incidental Findings Working Group consists of both academic subspecialty and general radiologists and is tasked with adapting and expanding upon the American College of Radiology incidental findings white papers to more closely apply to Canadian practice patterns, particularly more comprehensively dealing with the role of ultrasound and pursuing more cost-effective approaches to the workup of incidental findings without compromising patient care. Presented here are the 2021 Canadian guidelines for the management of pancreatic incidental findings. Topics covered include anatomic variants, fatty atrophy, pancreatic calcifications, ductal ectasia, and management of incidental pancreatic cysts.
Collapse
Affiliation(s)
- Christopher I Fung
- Department of Radiology and Diagnostic Imaging, 3158University of Alberta, Edmonton, Alberta, Canada
| | - David L Bigam
- Department of Surgery, 3158University of Alberta, Edmonton, Alberta, Canada
| | - Clarence K W Wong
- Division of Gastroenterology, Department of Medicine, 3158University of Alberta, Edmonton, Alberta, Canada
| | - Casey Hurrell
- Canadian Association of Radiologists, Ottawa, Ontario, Canada
| | - Jeffery R Bird
- Department of Medical Imaging, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Gary L Brahm
- Department of Medical Imaging, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
| | - Iain D C Kirkpatrick
- Department of Diagnostic Radiology, University of Manitoba, Winnipeg, Manitoba, Canada
| |
Collapse
|
24
|
Muehler MR, Rendell VR, Bergmann LL, Winslow ER, Reeder SB. Ferumoxytol-enhanced MR imaging for differentiating intrapancreatic splenules from other tumors. Abdom Radiol (NY) 2021; 46:2003-2013. [PMID: 33377995 PMCID: PMC8131292 DOI: 10.1007/s00261-020-02883-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 11/19/2020] [Accepted: 11/25/2020] [Indexed: 12/21/2022]
Abstract
Objectives Ferumoxytol is an ultra-small superparamagnetic iron oxide (USPIO) agent that is taken up by splenic tissue. This study describes our initial institutional experience of ferumoxytol-enhanced MRI (feMRI) for differentiating intrapancreatic splenules (IPS) from other pancreatic lesions. Methods In this retrospective study, patients with computed tomographic imaging that identified small enhancing lesions in the tail of the pancreas subsequently underwent feMRI for further characterization. The feMRI protocol included T2-weighted (T2w) imaging with and without fat suppression (FS), R2* mapping, diffusion-weighted imaging (DWI), and T1-weighted (T1w) imaging with FS, prior to contrast injection. Immediately after slow intravenous infusion with 3 mg/kg body weight ferumoxytol, T1w was repeated. Delayed imaging with all sequences were obtained 24–72 h after ferumoxytol administration. Results Seven patients underwent feMRI. In two patients, the pancreatic lesions were presumed as pancreatic neuroendocrine tumor (PNET) from feMRI and in the remaining 5 IPS. One of the two patients with PNET was symptomatic for NET. In another symptomatic patient with pathologically proven duodenal NET and suspected PNET, the pancreatic lesion was proven to be an IPS on feMRI. IPS demonstrated strong negative enhancement in feMRI on T2w and increased R2* values consistent with splenic tissue, while the presumed PNETs did not enhance. T2w FS was helpful on the pre-contrast images to identify IPS, while R2* did on post-contrast images. Neither DWI nor T1w contributed to differentiating PNETs from IPS. Conclusions This study demonstrates the potential utility of feMRI as a helpful adjunct diagnostic tool for differentiating IPS from other pancreatic lesions. Further studies in larger patient cohorts are needed.
Collapse
Affiliation(s)
- M R Muehler
- Department of Radiology, University of Wisconsin, Madison, WI, USA.
- Department of Radiology and Neuroradiology, University Greifswald, Greifswald, Germany.
| | - V R Rendell
- Department of Surgery, University of Wisconsin, Madison, WI, USA
| | - L L Bergmann
- Department of Radiology, University of Texas Southwestern, Dallas, TX, USA
| | - E R Winslow
- Medstar Georgetown Transplant Institute, Medstar Georgetown University Hospital, Washington, DC, USA
| | - S B Reeder
- Department of Radiology, University of Wisconsin, Madison, WI, USA
- Department of Biomedical Engineering, University of Wisconsin, Madison, WI, USA
- Department Medical Physics, University of Wisconsin, Madison, WI, USA
- Department of Medicine, University of Wisconsin, Madison, WI, USA
- Department of Emergency Medicine, University of Wisconsin, Madison, WI, USA
| |
Collapse
|
25
|
Impact of PET data driven respiratory motion correction and BSREM reconstruction of 68Ga-DOTATATE PET/CT for differentiating neuroendocrine tumors (NET) and intrapancreatic accessory spleens (IPAS). Sci Rep 2021; 11:2273. [PMID: 33500455 PMCID: PMC7838183 DOI: 10.1038/s41598-020-80855-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 12/29/2020] [Indexed: 12/17/2022] Open
Abstract
To evaluate whether quantitative PET parameters of motion-corrected 68Ga-DOTATATE PET/CT can differentiate between intrapancreatic accessory spleens (IPAS) and pancreatic neuroendocrine tumor (pNET). A total of 498 consecutive patients with neuroendocrine tumors (NET) who underwent 68Ga-DOTATATE PET/CT between March 2017 and July 2019 were retrospectively analyzed. Subjects with accessory spleens (n = 43, thereof 7 IPAS) and pNET (n = 9) were included, resulting in a total of 45 scans. PET images were reconstructed using ordered-subsets expectation maximization (OSEM) and a fully convergent iterative image reconstruction algorithm with β-values of 1000 (BSREM1000). A data-driven gating (DDG) technique (MOTIONFREE, GE Healthcare) was applied to extract respiratory triggers and use them for PET motion correction within both reconstructions. PET parameters among different samples were compared using non-parametric tests. Receiver operating characteristics (ROC) analyzed the ability of PET parameters to differentiate IPAS and pNETs. SUVmax was able to distinguish pNET from accessory spleens and IPAs in BSREM1000 reconstructions (p < 0.05). This result was more reliable using DDG-based motion correction (p < 0.003) and was achieved in both OSEM and BSREM1000 reconstructions. For differentiating accessory spleens and pNETs with specificity 100%, the ROC analysis yielded an AUC of 0.742 (sensitivity 56%)/0.765 (sensitivity 56%)/0.846 (sensitivity 62%)/0.840 (sensitivity 63%) for SUVmax 36.7/41.9/36.9/41.7 in OSEM/BSREM1000/OSEM + DDG/BSREM1000 + DDG, respectively. BSREM1000 + DDG can accurately differentiate pNET from accessory spleen. Both BSREM1000 and DDG lead to a significant SUV increase compared to OSEM and non-motion-corrected data.
Collapse
|
26
|
Nazem MN, Sajjadian SM, Kheirandish R, Shamshirgaran MA. Accessory spleen in a dog: Macroscopic and microscopic findings. BULGARIAN JOURNAL OF VETERINARY MEDICINE 2021. [DOI: 10.15547/bjvm.2019-0031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Accessory spleens are one or more areas of normal ectopic splenic tissue of variable size supplied by the branches of the splenic artery. A 7 year-old mixed breed male dog was fixed for use as a model in anatomy hall. During the abdominal dissection, the gross examination showed a 6.3×3.1×1 cm mass that was situated on the caudodorsal border of the spleen. Its appearance and firm consistency were similar to those of spleen. There was no connection between the spleen and this mass. It was supplied by accessory splenic artery. Microscopic examination of the mass revealed some structures similar to spleen.
Collapse
|
27
|
Poola S, Laks S, Kragel P, Regan K. Intrapancreatic Accessory Spleen Masquerading as a Pancreatic Mucinous Neoplasm. Surg J (N Y) 2020; 6:e128-e130. [PMID: 32566751 PMCID: PMC7297644 DOI: 10.1055/s-0040-1710342] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 04/06/2020] [Indexed: 11/05/2022] Open
Abstract
Incidentally discovered pancreatic cysts have become more common with increasing use of abdominal cross-sectional imaging. Tools that help us to better risk stratify a pancreatic cyst include advanced imaging techniques, such as pancreatic protocol computed tomography (CT) scan or magnetic resonance imaging (MRI) with cholangiopancreatography. Endoscopic ultrasound (EUS) and fine-needle aspiration (FNA) are invasive measures to better define and sample cysts especially if high-risk features are present. EUS may also yield pancreatic cyst fluid for analysis of carcinoembryonic antigen (CEA) which is elevated in mucinous cysts. This case highlights a rare finding of a mucinous, epidermoid cyst in an intrapancreatic accessory spleen (IPAS) with high-risk features on EUS.
Collapse
Affiliation(s)
- Shiva Poola
- Department of Internal Medicine/Pediatrics, Vidant Medical Center/Brody School of Medicine, Greenville, North Carolina
| | - Shachar Laks
- Deparment of Surgery, Vidant Medical Center/Brody School of Medicine, Greenville, North Carolina
| | - Peter Kragel
- Deparment of Pathology, Vidant Medical Center/Brody School of Medicine, Greenville, North Carolina
| | - Kara Regan
- Deparment of Gastroenterology, Vidant Medical Center/Brody School of Medicine, Greenville, North Carolina
| |
Collapse
|
28
|
Abstract
Multidetector computed tomography (MDCT) is a widely used cross-sectional imaging modality for initial evaluation of patients with suspected pancreatic ductal adenocarcinoma (PDAC). However, diagnosis of PDAC can be challenging due to numerous pitfalls associated with image acquisition and interpretation, including technical factors, imaging features, and cognitive errors. Accurate diagnosis requires familiarity with these pitfalls, as these can be minimized using systematic strategies. Suboptimal acquisition protocols and other technical errors such as motion artifacts and incomplete anatomical coverage increase the risk of misdiagnosis. Interpretation of images can be challenging due to intrinsic tumor features (including small and isoenhancing masses, exophytic masses, subtle pancreatic duct irregularities, and diffuse tumor infiltration), presence of coexisting pathology (including chronic pancreatitis and intraductal papillary mucinous neoplasm), mimickers of PDAC (including focal fatty infiltration and focal pancreatitis), distracting findings, and satisfaction of search. Awareness of pitfalls associated with the diagnosis of PDAC along with the strategies to avoid them will help radiologists to minimize technical and interpretation errors. Cognizance and mitigation of these errors can lead to earlier PDAC diagnosis and ultimately improve patient prognosis.
Collapse
|
29
|
Spleen Scan for 68Ga-DOTATOC PET-Positive Pancreatic Tail Lesion: Differential Diagnosis of Neuroendocrine Tumor from Accessory Spleen. Nucl Med Mol Imaging 2019; 54:43-47. [PMID: 32206130 DOI: 10.1007/s13139-019-00626-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 11/19/2019] [Accepted: 11/25/2019] [Indexed: 12/15/2022] Open
Abstract
68Ga-DOTATOC PET/CT is widely used as a functional imaging technique in the detection and characterization of neuroendocrine tumors (NETs). Pancreatic NET and intrapancreatic accessory spleen (IPAS) have similar radiologic characteristics in anatomical imaging and usually show high uptake of 68Ga-DOTATOC. Thus, it is challenging to make a differential diagnosis between NET and IPAS when the tumor-like lesion is located in the pancreatic tail. Here, we present a case of 68Ga-DOTATOC PET-positive pancreatic tail lesion with high arterial enhancement on CT and MRI. Since 99mTc-labeled damaged red blood cell does not accumulate on NET, a negative spleen scan finding was a crucial diagnostic step to decide surgical resection, which was histologically proven as insulinoma. Our case shows a promising role of additional use of spleen scan with SPECT/CT for the differential diagnosis of 68Ga-DOTATOC PET-positive pancreatic NET from the accessory spleen.
Collapse
|
30
|
Diagnosis of intrapancreatic accessory spleen by endoscopic ultrasound-guided fine-needle aspiration mimicking a pancreatic neoplasm: a case report and review of literature. Clin J Gastroenterol 2019; 13:287-297. [DOI: 10.1007/s12328-019-01045-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 09/11/2019] [Indexed: 12/14/2022]
|
31
|
Tan HJ, Neo WL, Lee SY, Goh BKP, Kam JH. Epidermal Inclusion Cyst in an Intra-pancreatic Accessory Spleen: a Differential Diagnosis for Pancreatic Cystic Neoplasms and Review of the Literature. J Gastrointest Cancer 2019; 50:308-314. [PMID: 28889365 DOI: 10.1007/s12029-017-0002-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Hiang Jin Tan
- Department of General Surgery, Singapore General Hospital, Bukit Merah, Singapore
| | - Wei Li Neo
- Department of General Surgery, Singapore General Hospital, Bukit Merah, Singapore
| | - Ser Yee Lee
- Department of Hepato-pancreato-biliary and Transplant Surgery, Singapore General Hospital, Bukit Merah, Singapore. .,Duke-NUS Medical School, Singapore, Singapore.
| | - Brian Kim Poh Goh
- Department of Hepato-pancreato-biliary and Transplant Surgery, Singapore General Hospital, Bukit Merah, Singapore.,Duke-NUS Medical School, Singapore, Singapore
| | - Juinn Huar Kam
- Department of Hepato-pancreato-biliary and Transplant Surgery, Singapore General Hospital, Bukit Merah, Singapore.,Duke-NUS Medical School, Singapore, Singapore
| |
Collapse
|
32
|
Accessory Splenectomy: the Keystone of Success in the Treatment for Refractory Immune Thrombocytopenia. Indian J Surg 2019. [DOI: 10.1007/s12262-019-01949-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
|
33
|
Rendell VR, Mühler MR, Winslow ER, Reeder SB. Letter to the Editor: Intrapancreatic Accessory Spleen Masquerading as a Pancreatic Neuroendocrine Tumor. J Gastrointest Surg 2019; 23:1717-1718. [PMID: 31152350 PMCID: PMC6650345 DOI: 10.1007/s11605-019-04110-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Accepted: 01/06/2019] [Indexed: 01/31/2023]
Affiliation(s)
- Victoria R. Rendell
- Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Matthias R. Mühler
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Emily R. Winslow
- Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Scott B. Reeder
- Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA.,Department of Medical Physics, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA.,Department of Biomedical Engineering, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA.,Department of Emergency Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| |
Collapse
|
34
|
Li L, Liu X, Chen J, Liu Z, Li Q, Shi Y. Laparoscopic spleen-preserving pancreatic resection for intrapancreatic accessory spleen: Case report. Medicine (Baltimore) 2019; 98:e16488. [PMID: 31374010 PMCID: PMC6709274 DOI: 10.1097/md.0000000000016488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
INTRODUCTION Intrapancreatic accessory spleen (IPAS) has been rarely noted radiologically because the spatial resolution of conventional images was low. The infrequent presence of the accessory spleen in the pancreatic tissue could lead to inappropriate diagnosis, thereby necessitating a therapeutic approach. The present study reported such cases and summarized the available imaging findings to reduce unnecessary invasive surgeries. PATIENT CONCERNS The patient's complaint was "a pancreatic mass was found for half a month." DIAGNOSIS IPAS was eventually diagnosed by pathology. INTERVENTIONS Laparoscopic spleen-preserving pancreatic resection. OUTCOMES Postoperative course was uneventful and the patient was discharged from our hospital after 10 days. CONCLUSIONS When an asymptomatic pancreatic mass is detected, the diagnosis of IPAS should not be excluded, especially if the lesion has the same imaging features as the spleen. As a definite diagnosis of IPAS is difficult by a single examination, multiple techniques might be essential.
Collapse
Affiliation(s)
- Le Li
- The Hepatobiliary Surgery, Chifeng Municipal Hospital
| | - Xiaohua Liu
- Department of Medical Oncology, Affiliated Hospital of Chifeng College, Chifeng, Inner Mongolia Autonomous, China
| | - Jinming Chen
- The Hepatobiliary Surgery, Chifeng Municipal Hospital
| | - Zhonghua Liu
- The Hepatobiliary Surgery, Chifeng Municipal Hospital
| | - Qiang Li
- The Hepatobiliary Surgery, Chifeng Municipal Hospital
| | - Ying Shi
- The Hepatobiliary Surgery, Chifeng Municipal Hospital
| |
Collapse
|
35
|
Lancellotti F, Sacco L, Cerasari S, Bellato V, Cicconi S, Ciardi A, Muttillo EM, Feola T, Caronna R, Chirletti P. Intrapancreatic accessory spleen false positive to 68Ga-Dotatoc: case report and literature review. World J Surg Oncol 2019; 17:117. [PMID: 31288823 PMCID: PMC6617599 DOI: 10.1186/s12957-019-1660-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 06/28/2019] [Indexed: 02/08/2023] Open
Abstract
Background Intrapancreatic accessory spleen (IPAS) is an uncommon finding of pancreatic mass. Differential diagnosis with pancreatic tumor, especially with non-functional neuroendocrine tumor (NF-NET), may be very hard and sometimes it entails unnecessary surgery. A combination of CT scan, MRI, and nuclear medicine can confirm the diagnosis of IPAS. 68-Ga-Dotatoc PET/CT is the gold standard in NET diagnosis and it can allow to distinguish between IPAS and NET. Case presentation A 69-year-old man was admitted to our hospital for an incidental nodule in the tail of the pancreas with focal uptake of 68-Ga-dotatate at PET/CT. NET was suspected and open distal splenopancreatectomy was performed. Pathologic examination revealed an IPAS. Conclusion This is the second IPAS case in which a positive 68Ga-Dotatoc uptake led to a false diagnosis of pancreatic NET. Here is a proposal of a literature review.
Collapse
Affiliation(s)
- Francesco Lancellotti
- Department of Surgical Sciences, Sapienza University of Rome, Viale del Policlinico 155, 00161, Rome, Italy
| | - Luca Sacco
- Department of Surgical Sciences, Sapienza University of Rome, Viale del Policlinico 155, 00161, Rome, Italy
| | - Saverio Cerasari
- Department of Surgical Sciences, Sapienza University of Rome, Viale del Policlinico 155, 00161, Rome, Italy
| | - Vittoria Bellato
- Department of Surgical Sciences, Sapienza University of Rome, Viale del Policlinico 155, 00161, Rome, Italy
| | - Simone Cicconi
- Department of Surgical Sciences, Sapienza University of Rome, Viale del Policlinico 155, 00161, Rome, Italy
| | - Antonio Ciardi
- Department of Radiological Oncological and Pathological Sciences, Sapienza University of Rome, Viale del Policlinico 155, 00161, Rome, Italy
| | - Edoardo Maria Muttillo
- Department of Surgical Sciences, Sapienza University of Rome, Viale del Policlinico 155, 00161, Rome, Italy
| | - Tiziana Feola
- Department of Experimental Medicine, Sapienza University of Rome, Viale del Policlinico 155, 00161, Rome, Italy
| | - Roberto Caronna
- Department of Surgical Sciences, Sapienza University of Rome, Viale del Policlinico 155, 00161, Rome, Italy.
| | - Piero Chirletti
- Department of Surgical Sciences, Sapienza University of Rome, Viale del Policlinico 155, 00161, Rome, Italy
| |
Collapse
|
36
|
Abstract
Numerous and various congenital abnormalities and anatomic variants of the pancreas (CAAVPs) have been reported. Some of them are not so uncommon. Recent advances and accessibility of various multiplanar imaging modalities today offer the increased capabilities of detection and full diagnosis of these CAAVPs. With a precise diagnosis, the symptomatic CAAVPs can not only be more specifically treated but even more their detection and exact description can modify the surgical or interventional strategy to avoid unexpected post-operative complications. This article aimed to review the embryogenesis of the pancreas and describe imaging findings of CAAVPs.
Collapse
|
37
|
AlShammari A, Kalagi D, Hijji T, Aburahmah M. Laparoscopic intrapancreatic accessory splenectomy: A case report of recurrent immune thrombocytopenia in a 33 years old male patient after 6 years of splenectomy. Int J Surg Case Rep 2019; 60:168-170. [PMID: 31229770 PMCID: PMC6597495 DOI: 10.1016/j.ijscr.2019.06.021] [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: 03/27/2019] [Revised: 05/16/2019] [Accepted: 06/12/2019] [Indexed: 11/17/2022] Open
Abstract
Intrapancreatic Accessory Spleen (IPAS) is a rare embryological benign abnormality. (IPAS) should be considered in patients with recurrent immune thrombocytopenia (ITP). Although IPAS is a challenging diagnosis, it can be detected by the recent advancement of medical imaging.
Introduction Intra-pancreatic Accessory Spleen (IPAS) is a rare benign abnormality of splenic embryology that should be considered in any patient with recurrence of immune thrombocytopenia (ITP). The case demonstrates that remission could be achieved if an IPAS is correctly identified and safely removed. Case presentation We report a 33-years-old male patient who presented with chronic ITP relapsed 3 years post initial splenectomy. The patient presented with severe thrombocytopenia requiring steroids and intravenous immunoglobulin (IVIG). Discussion IPAS can be identified using enhanced CT scan along with Tc-99 m sulfur colloid scintigraphy. Our patient underwent CT scan of abdomen and pelvis and was found to have an IPAS originating from the tail of the pancreas which was subsequently removed laparoscopically. The patient was then tapered off steroids and was followed up regularly and found to have acceptable platelet levels and no symptoms for 30 months post-surgery. Conclusion The diagnosis of IPAS can be non-invasively made by an experienced radiologist with the recent advancement of medical imaging. Recognizing IPAS as a possible cause of ITP recurrence, and using minimally invasive approach can be performed safely and lead satisfactory outcomes.
Collapse
Affiliation(s)
- Abdullah AlShammari
- College of Medicine, Alfaisal University, P.O. Box 50927, Riyadh 11533, Saudi Arabia; King Faisal Specialist Hospital and Research Center (KFSH&RC), P. O. Box 3354, Riyadh 11211, Saudi Arabia.
| | - Dana Kalagi
- College of Medicine, Alfaisal University, P.O. Box 50927, Riyadh 11533, Saudi Arabia.
| | - Talal Hijji
- College of Medicine, Alfaisal University, P.O. Box 50927, Riyadh 11533, Saudi Arabia.
| | - Mohammad Aburahmah
- College of Medicine, Alfaisal University, P.O. Box 50927, Riyadh 11533, Saudi Arabia; King Faisal Specialist Hospital and Research Center (KFSH&RC), P. O. Box 3354, Riyadh 11211, Saudi Arabia.
| |
Collapse
|
38
|
Lin X, Xu L, Wu A, Guo C, Chen X, Wang Z. Differentiation of intrapancreatic accessory spleen from small hypervascular neuroendocrine tumor of the pancreas: textural analysis on contrast-enhanced computed tomography. Acta Radiol 2019; 60:553-560. [PMID: 30086651 DOI: 10.1177/0284185118788895] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
BACKGROUND Intrapancreatic accessory spleens (IPASs) are usually misdiagnosed as pancreatic neuroendocrine tumors (PNETs). Texture analysis is valuable in tumor detection, diagnosis, and staging. PURPOSE To identify the potential of texture features in differentiating IPASs from small hypervascular PNETs. MATERIAL AND METHODS Twenty-one patients with PNETs and 13 individuals with IPASs who underwent pretreatment dynamic contrast-enhanced computed tomography (CT) were retrospectively analyzed. The routine imaging features-such as location, size, margin, cystic or solid appearance, enhancement degree and pattern, and lymph node enlargement-were recorded. Texture features, such as entropy, skewness, kurtosis, and uniformity, on contrast-enhanced images were analyzed. Receiver operating characteristic (ROC) analysis was performed to differentiate IPASs from PNETs. RESULTS No significant differences were observed in margin, enhancement degree (arterial and portal phase), lymph node enlargement, or size between PNETs and IPASs (all P > 0.05). However, IPASs usually showed heterogeneous enhancement at the arterial phase and the same degree of enhancement as the spleen at the portal phase, both of which were greater than those of PNETs (69% vs. 35%, P = 0.06; 100% vs. 29%, P = 0.04). Entropy and uniformity were significantly different between IPASs and PNETs at moderate (1.5) and high sigma values (2.5) (both P < 0.01). ROC analysis showed that uniformity at moderate and high sigma had the highest area under the curve (0.82 and 0.89) with better sensitivity (85.0-95.0%) and acceptable specificity (75.0-83.3%) for differentiating IPASs from PNETs. CONCLUSIONS Texture parameters have potential in differentiating IPASs from PNETs.
Collapse
Affiliation(s)
- Xubo Lin
- Department of Radiology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou Medical University, Wenzhou, PR China
| | - Lei Xu
- Department of Radiology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou Medical University, Wenzhou, PR China
| | - Aiqin Wu
- Department of Radiology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou Medical University, Wenzhou, PR China
| | - Chuangen Guo
- Department of Radiology, the First Affiliated Hospital, College of Medicine Zhejiang University, Hangzhou, PR China
| | - Xiao Chen
- Department of Radiology, the Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, PR China
| | - Zhongqiu Wang
- Department of Radiology, the Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, PR China
| |
Collapse
|
39
|
Rodríguez Vargas D, Parada Blázquez M, Vargas Serrano B. Diagnostic imaging of abnormalities in the location of the spleen and in the number of spleens. RADIOLOGIA 2019. [DOI: 10.1016/j.rxeng.2018.09.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
40
|
Rodríguez Vargas D, Parada Blázquez M, Vargas Serrano B. Diagnóstico por imagen de anomalías en el número y localización del bazo. RADIOLOGIA 2019; 61:26-34. [DOI: 10.1016/j.rx.2018.07.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2018] [Revised: 06/29/2018] [Accepted: 07/02/2018] [Indexed: 11/29/2022]
|
41
|
Li BQ, Lu J, Seery S, Guo JC. Epidermoid cyst in intrapancreatic accessory spleen: A systematic review. Pancreatology 2019; 19:10-16. [PMID: 30366677 DOI: 10.1016/j.pan.2018.10.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Revised: 10/16/2018] [Accepted: 10/21/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND/OBJECTIVES Due to its rarity, epidermoid cyst in intrapancreatic accessory spleen (ECIPAS) is still a diagnostic dilemma during clinical practice. The aim of this review was to summarize the epidemiologic features and management of ECIPAS. METHODS MEDLINE and EMBASE were searched for English articles reporting on ECIPAS up to April 30th, 2018 following the methodology suggested by the PRISMA guidelines. Categorical variables were reported as frequency and percentage. Continuous variables were reported as median (range). RESULTS A total of 56 patients from 47 full articles were included for the final data synthesis. More than half of the ECIPASs (59%) were found incidentally. The female/male ratio was 1.33. ECIPAS is typically a single mono-/multi-lobular cystic lesions in the pancreatic tail with thickened cystic wall or various amount of solid component which had identical density/signal to the spleen on imaging examinations. The cyst is filled with serous or non-serous fluid. Recognition of the surrounding ectopic splenic tissue is the key point to diagnose ECIPAS. However, no preoperative examination was able to make a definite diagnosis. Almost all the patients (96%) received surgical treatment, due to the suspicion of pancreatic malignant or potentially malignant cystic tumor, especially mucinous cystic neoplasm (MCN). CONCLUSIONS Although seldom encountered, ECIPAS should be considered as a differential diagnosis for pancreatic cystic lesions, especially when solid component was detected. As a benign disease, unnecessary surgery should be avoided. Because it is difficult to make a definite diagnosis preoperatively by one single examination, multiple modalities may be required.
Collapse
Affiliation(s)
- Bing-Qi Li
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences/Peking Union Medical College, Beijing, China
| | - Jun Lu
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences/Peking Union Medical College, Beijing, China
| | - Samuel Seery
- School of Humanities and Social Sciences, Chinese Academy of Medical Sciences/Peking Union Medical College, Beijing, China
| | - Jun-Chao Guo
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences/Peking Union Medical College, Beijing, China.
| |
Collapse
|
42
|
Kim SS. Pancreas Neuroendocrine Tumor and Its Mimics: Review of Cross-Sectional Imaging Findings for Differential Diagnosis. ACTA ACUST UNITED AC 2018. [DOI: 10.15746/sms.18.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
43
|
Li BQ, Xu XQ, Guo JC. Intrapancreatic accessory spleen: a diagnostic dilemma. HPB (Oxford) 2018; 20:1004-1011. [PMID: 29843985 DOI: 10.1016/j.hpb.2018.04.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2018] [Revised: 04/17/2018] [Accepted: 04/29/2018] [Indexed: 12/12/2022]
Abstract
BACKGROUND As intrapancreatic accessory spleen (IPAS) is rarely encountered during clinical practice, the aim of this review was to summarize the epidemiologic features, the diagnosis and treatment of IPAS. METHODS MEDLINE and EMBASE were searched for articles reporting on IPAS. Categorical variables were reported as frequency and percentage. Continuous variables were reported as median (range). RESULTS A total of 105 patients were included, of which 73% were detected incidentally. The male/female ratio was 1.23. The size of IPAS in patients who had previously undergone splenectomy was larger than that of patients without prior splenectomy (2.5 cm vs 1.5 cm; p = 0.020). No preoperative examination was able to make a definite diagnosis for all IPASs. More than half of the patients (55%) received surgical treatment, most of which (87%) were suspected as pancreatic neuroendocrine tumors (p-net) preoperatively. CONCLUSIONS Although rare, IPAS should be considered in the differential of patients with suspected incidental p-net, especially if there has been a past history of splenectomy. Preoperative diagnosis is important as unnecessary surgery can be avoided. As it is difficult to make a definite diagnosis of IPAS by one single examination, multiple techniques may be required.
Collapse
Affiliation(s)
- Bing-Qi Li
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences/Peking Union Medical College, Beijing, China
| | - Xie-Qun Xu
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences/Peking Union Medical College, Beijing, China
| | - Jun-Chao Guo
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences/Peking Union Medical College, Beijing, China.
| |
Collapse
|
44
|
Intrapancreatic Accessory Spleen Masquerading as a Pancreatic Neuroendocrine Tumor. J Gastrointest Surg 2018; 22:1799-1800. [PMID: 29404984 DOI: 10.1007/s11605-018-3701-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Accepted: 01/19/2018] [Indexed: 01/31/2023]
|
45
|
Ding Q, Ren Z, Wang J, Ma X, Zhang J, Sun G, Zuo C, Gu H, Jiang H. Intrapancreatic accessory spleen: Evaluation with CT and MRI. Exp Ther Med 2018; 16:3623-3631. [PMID: 30250526 DOI: 10.3892/etm.2018.6613] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Accepted: 03/23/2018] [Indexed: 01/05/2023] Open
Abstract
The aim of the present study was to evaluate the characteristics of computed tomography (CT) and magnetic resonance imaging (MRI), particularly diffusion-weighted imaging (DWI), in the imaging of intrapancreatic accessory spleen (IPAS). The clinical and pathological records of 9 patients, including 8 patients with IPAS and 1 patient with splenosis, were reviewed. The patients had undergone plain and triple-phase enhanced CT scanning (n=9) and MRI scanning (n=8). The lesions of the 8 IPAS patients were located in the pancreatic tail, and were round (n=3), oval (n=4) or triangular (n=1) in shape. The CT and/or MRI densities, signal intensities and dynamic enhanced patterns of the lesions were similar to those of the orthotopic spleen. In DWI images (n=5), the IPAS regions presented high signal intensity (SI), and no significant difference in the apparent diffusion coefficient determined using a b-value of 600 sec/mm2 was identified between the IPAS and orthotopic spleen (P>0.05). One patient with splenosis complicated with cirrhosis had a nodule located in the pancreatic tail with an unenhanced CT value of 65 HU. In MRI examination, with the exception of the dynamic enhancement pattern, the T1-weighted, T2-weighted and DWI signals of splenosis were inconsistent with those of the normal spleen. In conclusion, in pre-contrast and post-contrast-enhanced CT and MRI images, IPAS exhibits similar characteristics to the orthotopic spleen. CT and MRI used in combination with DWI are important in the diagnosis of IPAS.
Collapse
Affiliation(s)
- Qianjiang Ding
- Department of Radiology, The Affiliated Hospital of Medical School, Ningbo University, Ningbo, Zhejiang 315020, P.R. China
| | - Zhihao Ren
- Department of Radiology, The Affiliated Hospital of Medical School, Ningbo University, Ningbo, Zhejiang 315020, P.R. China
| | - Jianhua Wang
- Department of Radiology, The Affiliated Hospital of Medical School, Ningbo University, Ningbo, Zhejiang 315020, P.R. China
| | - Xiaolong Ma
- Department of Radiology, Changhai Hospital, Second Military Medical University, Shanghai 200433, P.R. China
| | - Jian Zhang
- Department of Nuclear Medicine, Changhai Hospital, Second Military Medical University, Shanghai 200433, P.R. China
| | - Gaofeng Sun
- Department of Nuclear Medicine, Changhai Hospital, Second Military Medical University, Shanghai 200433, P.R. China
| | - Changjing Zuo
- Department of Nuclear Medicine, Changhai Hospital, Second Military Medical University, Shanghai 200433, P.R. China
| | - Hao Gu
- Department of Pathology, Ningbo Second Hospital, Ningbo, Zhejiang 315010, P.R. China
| | - Hui Jiang
- Department of Pathology, Changhai Hospital, Second Military Medical University, Shanghai 200433, P.R. China
| |
Collapse
|
46
|
Jegadeesan M, Harisankar CNB, Nivetha TS, Swetha TS, Murugan M, Gunaraj A, Ramanujam A. Decisive Role of Nuclear Imaging in a Rare Pancreatic Incidentaloma. Indian J Nucl Med 2018; 33:180-181. [PMID: 29643690 PMCID: PMC5883447 DOI: 10.4103/ijnm.ijnm_11_18] [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: 11/04/2022] Open
Abstract
Pancreatic incidentalomas are increasingly recognized entities that occur as a fallout of widespread availability of high definition imaging technology. These lesions offer diagnostic dilemmas to both clinicians and radiologists alike. Nevertheless, it is the advancement in diagnostic radiology that comes to the rescue in the management of these not-so-uncommon lesions.
Collapse
Affiliation(s)
- Madhusudhanan Jegadeesan
- Department of Gastroenterology and Liver Transplantation, Velammal Medical College Hospital and Research Institute, Madurai, Tamil Nadu, India
| | | | | | | | - Mariappan Murugan
- Department of Radiology, Velammal Medical College Hospital and Research Institute, Madurai, Tamil Nadu, India
| | - Alwin Gunaraj
- Department of Gastroenterology and Liver Transplantation, Velammal Medical College Hospital and Research Institute, Madurai, Tamil Nadu, India
| | - Alwar Ramanujam
- Department of Gastroenterology and Liver Transplantation, Velammal Medical College Hospital and Research Institute, Madurai, Tamil Nadu, India
| |
Collapse
|
47
|
Abstract
OBJECTIVE The purpose of this article is to discuss the advances in CT acquisition and image postprocessing as they apply to imaging the pancreas and to conceptualize the role of radiogenomics and machine learning in pancreatic imaging. CONCLUSION CT is the preferred imaging modality for assessment of pancreatic diseases. Recent advances in CT (dual-energy CT, CT perfusion, CT volumetry, and radiogenomics) and emerging computational algorithms (machine learning) have the potential to further increase the value of CT in pancreatic imaging.
Collapse
|
48
|
Abstract
Hypervascular pancreatic lesions/masses can arise due to a variety of causes, both benign and malignant, leading to a wide differential diagnosis. Accurate differentiation of these lesions into appropriate diagnoses can be challenging; however, this is important for directing clinical management. This manuscript provides a multimodality imaging review of hypervascular pancreatic lesion, with emphasis on an imaging-based algorithmic approach for differentiation of these lesions, which may serve as a decision support tool when encountering these uncommon lesions. Additionally, we stratify these lesions into three categories based on malignant potential, to help guide clinical management.
Collapse
|
49
|
Torres US, Matsumoto C, de Macedo Neto AC, Caldana RP, Motoyama Caiado ÂH, Tiferes DA, Warmbrand G, de Godoy LL, D’Ippolito G. Common and Uncommon Benign Pancreatic Lesions Mimicking Malignancy: Imaging Update and Review. Semin Ultrasound CT MR 2018; 39:206-219. [DOI: 10.1053/j.sult.2017.10.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
50
|
Issa M, Bradshaw L, Loveluck M, Nickless D, Yong TL. Laparoscopic distal pancreatectomy for intrapancreatic accessory spleen: a case report. ANZ J Surg 2017; 89:781-782. [PMID: 29232771 DOI: 10.1111/ans.14309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 10/21/2017] [Indexed: 11/29/2022]
Affiliation(s)
- Michael Issa
- Department of Surgery, The Northern Hospital, Melbourne, Victoria, Australia
| | - Luke Bradshaw
- Department of Surgery, The Northern Hospital, Melbourne, Victoria, Australia
| | - Maree Loveluck
- Department of Surgery, The Northern Hospital, Melbourne, Victoria, Australia
| | - David Nickless
- Department of Surgery, The Northern Hospital, Melbourne, Victoria, Australia
| | - Tuck Leong Yong
- Department of Surgery, The Northern Hospital, Melbourne, Victoria, Australia
| |
Collapse
|