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Manfrin E, Parisi A, Stefanizzi L, D'Onofrio M, Bernardoni L, Crino SF, Pelosi G, Pancione M, Giordano G, Sina S, Remo A. Bcl-10, trypsin and synaptophysin helps recognize acinar cell and mixed acinar neuroendocrine cell carcinoma of the pancreas on both preoperative cytological samples and needle biopsy specimens. Pathol Res Pract 2021; 226:153593. [PMID: 34481211 DOI: 10.1016/j.prp.2021.153593] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 08/18/2021] [Accepted: 08/20/2021] [Indexed: 02/05/2023]
Abstract
OBJECTIVE Acinar cell carcinoma (ACC) of the pancreas are known to be rare and difficult to be recognize because they mimic other unrelated tumors (neuroendocrine, solid pseudopapillary) with different clinical behavior. Especially in the setting of inoperable patients, fine needle aspiration cytology (FNAC), core needle biopsy (FNAB) and immunocyto/histochemistry (ICC/IHC) play a crucial role in the differential diagnosis. The biological material available for ICC tests obtained by minimal invasive procedures is usually limited. Aim of the current study was to evaluate diagnostic panel based on a limited number of ICC markers for typing preoperatively ACC of the pancreas. METHODS Of 1820 needle sampling procedures performed and related to pancreatic lesions, 21 cases were extracted with a confirmed diagnosis of ACC on histology. Of them,12 were pure ACC and 9 mixed acinar-neuroendocrine carcinoma (MANEC). Smears of ACC, MANEC and a control group composed of 34neuroendocrine, 7solid pseudopapillary, 50ductal and 4 adenosquamous carcinoma were assessed with an ICC panel made up of BCL10, trypsin, synaptophysin, chromograninA, β-catenin. RESULTS On cytology, BCL10 sensitivity and specificity for ACC was 100%. Trypsin correctly recognized 90% of the cases. Synaptophysin was helpful to correctly identify all the cases with a mixed neuroendocrine component. No significant cross-reaction was observed between BCL10 and trypsin in any of the control group case. CONCLUSIONS BCL10 is a determinant marker for the diagnosis of acinar cell carcinoma and mixed acinar neuroendocrine cell carcinoma of the pancreas in a pre-operative citologic/histologic setting.
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Affiliation(s)
- Erminia Manfrin
- Department of Diagnostics and Public Health, Section of Pathology, University of Verona, L.A. Scuro Square, 10, 37134 Verona, Italy.
| | - Alice Parisi
- Department of Pathology and Diagnosis, Section of Pathology, University of Verona Hospital Trust, L.A. Scuro Square, 10, 37134 Verona, Italy
| | - Lavinia Stefanizzi
- Department of Diagnostics and Public Health, Section of Pathology, University of Verona, L.A. Scuro Square, 10, 37134 Verona, Italy
| | - Mirko D'Onofrio
- Department of Diagnostics and Public Health, Section of Radiology, University of Verona, L.A. Scuro Square, 10, 37134 Verona, Italy
| | - Laura Bernardoni
- Department of Medicine, Unit of Digestive Endoscopy, Pancreas Institute, University of Verona Hospital Trust, L.A. Scuro Square, 10, 37134 Verona, Italy
| | - Stefano Francesco Crino
- Department of Medicine, Unit of Digestive Endoscopy, Pancreas Institute, University of Verona Hospital Trust, L.A. Scuro Square, 10, 37134 Verona, Italy
| | - Giuseppe Pelosi
- Department of Oncology and Hemato-Oncology, University of Milan School of Medicine, via Festa del Perdono, 7, 20122 Milan, Italy
| | - Massimo Pancione
- Department of Science and Technologies, University of Sannio, Port'Arsa 11, 82100 Benevento, Italy
| | - Guido Giordano
- U.O.C. Oncologia Medica, Ospedali Riuniti Azienda Ospedaliera Universitaria, 71122 Foggia, Italy
| | - Sokol Sina
- Department of Diagnostics and Public Health, Section of Pathology, University of Verona, L.A. Scuro Square, 10, 37134 Verona, Italy
| | - Andrea Remo
- Department of Pathology, ULSS9 "Scaligera", Via Valverde 42, 37100 Verona, Italy.
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2
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Abdelkader A, Hunt B, Hartley CP, Panarelli NC, Giorgadze T. Cystic Lesions of the Pancreas: Differential Diagnosis and Cytologic-Histologic Correlation. Arch Pathol Lab Med 2019; 144:47-61. [PMID: 31538798 DOI: 10.5858/arpa.2019-0308-ra] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
CONTEXT.— Pancreatic cystic lesions (PCLs) are very common, and their detection is increasing with the advances in imaging techniques. Because of the major implications for management, distinguishing between neoplastic and nonneoplastic PCLs is critical. Neoplastic cysts with potential to progress into cancer include mucinous PCLs (intraductal papillary mucinous neoplasms and mucinous cystic neoplasms) and nonmucinous cysts (solid pseudopapillary tumors, serous cystic neoplasms, and neuroendocrine tumors with cystic degeneration). Nonneoplastic cysts with no risk of malignant transformation include pseudocysts, retention cysts, lymphoepithelial cysts, cystic pancreatic lymphangioma, and duplication cyst/ciliated foregut cysts. The role of endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) cytology with cyst fluid analysis in the diagnosis of PCLs has evolved during the last decade; however, a definitive diagnosis on cytologic specimens is hampered by the sparse cellularity and can be challenging. EUS-FNA can play an important role to differentiate low-risk from high-risk pancreatic cysts and to distinguish between patients with cysts who need clinical follow-up versus those who require surgery. OBJECTIVE.— To provide an integrative approach to diagnose pancreatic cystic lesions using EUS-FNA cytology and cyst fluid analysis, along with clinical, radiologic, histologic, genetic, and molecular characteristics. DATA SOURCES.— The review and analysis of the latest literature describing pancreatic cystic lesions. CONCLUSIONS.— Accurate diagnosis of PCLs requires a multidisciplinary and multimodal team approach, including the integration of clinical findings, imaging, cytology, cyst fluid analysis, and molecular testing.
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Affiliation(s)
- Amrou Abdelkader
- From the Department of Pathology, Medical College of Wisconsin, Milwaukee (Drs Abdelkader, Hunt, Hartley, and Giorgadze); and the Department of Pathology, Albert Einstein College of Medicine, The Bronx, New York (Dr Panarelli)
| | - Bryan Hunt
- From the Department of Pathology, Medical College of Wisconsin, Milwaukee (Drs Abdelkader, Hunt, Hartley, and Giorgadze); and the Department of Pathology, Albert Einstein College of Medicine, The Bronx, New York (Dr Panarelli)
| | - Christopher P Hartley
- From the Department of Pathology, Medical College of Wisconsin, Milwaukee (Drs Abdelkader, Hunt, Hartley, and Giorgadze); and the Department of Pathology, Albert Einstein College of Medicine, The Bronx, New York (Dr Panarelli)
| | - Nicole C Panarelli
- From the Department of Pathology, Medical College of Wisconsin, Milwaukee (Drs Abdelkader, Hunt, Hartley, and Giorgadze); and the Department of Pathology, Albert Einstein College of Medicine, The Bronx, New York (Dr Panarelli)
| | - Tamara Giorgadze
- From the Department of Pathology, Medical College of Wisconsin, Milwaukee (Drs Abdelkader, Hunt, Hartley, and Giorgadze); and the Department of Pathology, Albert Einstein College of Medicine, The Bronx, New York (Dr Panarelli)
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3
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Aoto K, Shimura T, Kofunato Y, Okada R, Yashima R, Kiko Y, Takenoshita S. Acinar Cell Cystadenocarcinoma of the Pancreas. Case Rep Gastroenterol 2017; 11:504-510. [PMID: 29033770 PMCID: PMC5624265 DOI: 10.1159/000455185] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Accepted: 12/15/2016] [Indexed: 12/02/2022] Open
Abstract
Acinar cell cystadenocarcinoma is a rare malignant epithelial neoplasm of the pancreas with a diffusely cystic, gross architecture in which the cysts are lined with neoplastic epithelial cells that demonstrate evidence of pancreatic exocrine enzyme production. This is the 10th case that has been reported in the literature. A 77-year-old male complaining of left hypochondrial pain was referred to our hospital for treatment of a pancreatic tumor. A huge, honeycomb-structured tumor was detected in the pancreatic tail. Distal pancreatectomy with total resection of the residual stomach and partial resection of the transverse colon were performed. Microscopically, there were variably sized cystic lesions in the tumor. Immunohistochemical examinations revealed that tumor cells were positive for alpha 1-antichymotrypsin and alpha 1-trypsin, showing that tumor cells had features of pancreatic acinar cells. Thus, the tumor was diagnosed as acinar cell cystadenocarcinoma. Herein, we report a rare case with acinar cell cystadenocarcinoma, which is the 10th case reported in the literature based on a PubMed search. We managed to resect the tumor completely by distal pancreatectomy with total resection of the residual stomach and partial resection of the transverse colon. The patient is still alive 26 months after surgery without any recurrence after 1 year of adjuvant chemotherapy with S-1.
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Affiliation(s)
- Keita Aoto
- Department of Organ Regulatory Surgery, Fukushima Medical University, Fukushima City, Japan
| | - Tatsuo Shimura
- Department of Organ Regulatory Surgery, Fukushima Medical University, Fukushima City, Japan
| | - Yasuhide Kofunato
- Department of Organ Regulatory Surgery, Fukushima Medical University, Fukushima City, Japan
| | - Ryo Okada
- Department of Organ Regulatory Surgery, Fukushima Medical University, Fukushima City, Japan
| | - Rei Yashima
- Department of Organ Regulatory Surgery, Fukushima Medical University, Fukushima City, Japan
| | - Yuichiro Kiko
- Department of Pathology, Fukushima Medical University, Fukushima City, Japan
| | - Seiichi Takenoshita
- Department of Organ Regulatory Surgery, Fukushima Medical University, Fukushima City, Japan
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4
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Callata-Carhuapoma HR, Pato Cour E, Garcia-Paredes B, Fernandez RM, Mendoza Fernandez ML, Fernandez AM, De La Rosa CA, Sotelo Lezama MJ, Cabezas-Camarero S, Sastre Varela J. Pancreatic acinar cell carcinoma with bilateral ovarian metastases, panniculitis and polyarthritis treated with FOLFIRINOX chemotherapy regimen. A case report and review of the literature. Pancreatology 2015; 15:440-4. [PMID: 25959244 DOI: 10.1016/j.pan.2015.04.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2014] [Revised: 04/09/2015] [Accepted: 04/14/2015] [Indexed: 02/08/2023]
Abstract
Pancreatic acinar cell carcinoma (PACC) is a rare pancreatic tumor, with an estimated frequency of less than 1% of pancreatic malignancies. There are no prospective studies to guide diagnostic or therapeutic algorithms. We report the case of a 36 year-old woman, diagnosed of a pancreatic tumor with liver and peritoneal metastases that was initially managed as a neuroendocrine tumor with temozolomide and capecitabine. After two cycles a severely painful arthritis developed in her left ankle with panniculitis and extensive fat necrosis, and CT scan demonstrated progressive disease. Pathology of the primary was reassessed establishing the diagnosis of PACC. The patient started treatment with FOLFIRINOX regimen, achieving clinical benefit and disease stabilization. We also briefly reviewed the literature on this rare subtype of pancreatic tumor.
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5
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Kim CY, Lee SH, Jeon HM, Kim HK, Kang CM, Lee WJ. AFP-producing acinar cell carcinoma treated by pancreaticoduodenectomy in a patient with a previous radical subtotal gastrectomy by gastric cancer. KOREAN JOURNAL OF HEPATO-BILIARY-PANCREATIC SURGERY 2014; 18:33-7. [PMID: 26155245 PMCID: PMC4492330 DOI: 10.14701/kjhbps.2014.18.1.33] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Revised: 12/10/2013] [Accepted: 12/16/2013] [Indexed: 12/31/2022]
Abstract
We report a case of alpha-fetoprotein (AFP)-producing acinar cell carcinoma (ACC) of the pancreas. The tumor was diagnosed in a 72 yearold female after radical subtotal gastrectomy (Billroth I) due to early gastric cancer six months before. The initial serum AFP levels were increased to 2,254.1 IU/ml and preoperative imaging studies showed a mass with approximately 2.5 cm in diameter near the neck of the pancreas. A pancreaticoduodenectomy was performed. The pathologic examination revealed an ill-defined lobulating tumor confined to the pancreas (T1 stage). Immunohistochemical study showed that the tumor cells expressed AFP. The Adenosine triphosphate-based chemotherapy response assay (ATP-CRA) suggested that cisplatin would be more desirable than gemcitabine in AFP-producing ACC of the pancreas as an adjuvant chemotherapy. However, the adjuvant chemotherapy was not performed due to the early pathological stage. The patient died from carcinomatosis and pneumonia. Even if the tumor was on a relatively early stage, an adjuvant treatment should be considered ACC.
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Affiliation(s)
- Chang Young Kim
- Department of Surgery, Yonsei University College of Medicine, Seoul, Korea
| | - Sung Hwan Lee
- Department of Surgery, Yonsei University College of Medicine, Seoul, Korea. ; Pancreaticobiliary Cancer Clinic, Institute of Gastroenterology, Yonsei University Severance Hospital, Seoul, Korea
| | - Hyae Min Jeon
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea
| | - Hyun Ki Kim
- Department of Pathology, Yonsei University College of Medicine, Seoul, Korea
| | - Chang Moo Kang
- Department of Surgery, Yonsei University College of Medicine, Seoul, Korea. ; Pancreaticobiliary Cancer Clinic, Institute of Gastroenterology, Yonsei University Severance Hospital, Seoul, Korea
| | - Woo Jung Lee
- Department of Surgery, Yonsei University College of Medicine, Seoul, Korea. ; Pancreaticobiliary Cancer Clinic, Institute of Gastroenterology, Yonsei University Severance Hospital, Seoul, Korea
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6
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Sakorafas GH, Smyrniotis V, Reid-Lombardo KM, Sarr MG. Primary pancreatic cystic neoplasms of the pancreas revisited. Part IV: rare cystic neoplasms. Surg Oncol 2012; 21:153-63. [PMID: 21816607 DOI: 10.1016/j.suronc.2011.06.007] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2011] [Revised: 05/16/2011] [Accepted: 06/29/2011] [Indexed: 02/07/2023]
Abstract
Primary pancreatic cystic neoplasms are being recognized with increasing frequency due to modern imaging techniques. In addition to the more common cystic neoplasms-serous cystadenoma, primary mucinous cystic neoplasm, and intraductal papillary mucinous neoplasm-there are many other less common neoplasms that appear as cystic lesions. These cystic neoplasms include solid pseudopapillary neoplasm of the pancreas (the most common rare cystic neoplasm), cystic neuroendocrine neoplasm, cystic degeneration of otherwise solid neoplasms, and then the exceedingly rare cystic acinar cell neoplasm, intraductal tubular neoplasm, angiomatous neoplasm, lymphoepithelial cysts (not true neoplasms), and few others of mesenchymal origin. While quite rare, the pancreatic surgeon should at the least consider these unusual neoplasms in the differential diagnosis of potentially benign or malignant cystic lesions of the pancreas. Moreover, each of these unusual neoplasms has their own natural history/tumor biology and may require a different level of operative aggressiveness to obtain the optimal outcome.
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Affiliation(s)
- George H Sakorafas
- 4th Department of Surgery, Medical School, University of Athens, Attikon University Hospital, Athens, 12462, Greece.
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7
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Perrone VG, Mariniello DM, De Lio N, Caniglia F, Cappelli C, Campani D, Funel N, Amorese G, Boggi U. The odd case of a small and mucinous-like acinar cell cystoadenocarcinoma of the pancreas. Pancreatology 2012; 12:421-2. [PMID: 23127530 DOI: 10.1016/j.pan.2012.07.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2012] [Revised: 07/13/2012] [Accepted: 07/16/2012] [Indexed: 02/06/2023]
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8
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Roggin KK, Chennat J, Oto A, Noffsinger A, Briggs A, Matthews JB. Pancreatic Cystic Neoplasm. Curr Probl Surg 2010; 47:459-510. [DOI: 10.1067/j.cpsurg.2010.02.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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9
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Abstract
The patients consisted of a 60-year-old woman and a 72-year-old man with no significant symptoms, who were both referred to the hospital due to the presence of large pancreatic tumors. They underwent F-18 FDG PET/CT and subsequently a pancreaticoduodenectomy and acinar cell carcinoma in the pancreas was proven histopathologically. In one case, the tumor consisted of a solid component presenting intense FDG uptake and necrotic tissue. In another case, the tumor consisted of cystic and papillary components presenting with weak FDG uptake. This report thus documents 2 cases of acinar cell carcinoma that showed contrasting histopathologic and F-18 FDG PET/CT findings.
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10
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Basturk O, Coban I, Adsay NV. Pancreatic cysts: pathologic classification, differential diagnosis, and clinical implications. Arch Pathol Lab Med 2009; 133:423-38. [PMID: 19260748 DOI: 10.5858/133.3.423] [Citation(s) in RCA: 198] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/04/2008] [Indexed: 12/14/2022]
Abstract
CONTEXT Cystic lesions of the pancreas are being recognized with increasing frequency and have become a more common finding in clinical practice because of the widespread use of advanced imaging modalities and the sharp drop in the mortality rate of pancreatic surgery. Consequently, in the past 2 decades, the nature of many cystic tumors in this organ has been better characterized, and significant developments have taken place in the classification and in our understanding of pancreatic cystic lesions. OBJECTIVE To provide an overview of the current concepts in classification, differential diagnosis, and clinical/biologic behavior of pancreatic cystic tumors. DATA SOURCES The authors' personal experience, based on institutional and consultation materials, combined with an analysis of the literature. CONCLUSIONS In contrast to solid tumors, most of which are invasive ductal adenocarcinomas with dismal prognosis, cystic lesions of the pancreas are often either benign or low-grade indolent neoplasia. However, those that are mucinous, namely, intraductal papillary mucinous neoplasms and mucinous cystic neoplasms, constitute an important category because they have well-established malignant potential, representing an adenoma-carcinoma sequence. Those that are nonmucinous such as serous tumors, congenital cysts, lymphoepithelial cysts, and squamoid cyst of pancreatic ducts have no malignant potential. Only rare nonmucinous cystic tumors that occur as a result of degenerative/necrotic changes in otherwise solid neoplasia, such as cystic ductal adenocarcinomas, cystic pancreatic endocrine neoplasia, and solid-pseudopapillary neoplasm, are also malignant and have variable degrees of aggressiveness.
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Affiliation(s)
- Olca Basturk
- Department of Pathology, New York University, New York, New York, USA
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11
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Basturk O, Zamboni G, Klimstra DS, Capelli P, Andea A, Kamel NS, Adsay NV. Intraductal and papillary variants of acinar cell carcinomas: a new addition to the challenging differential diagnosis of intraductal neoplasms. Am J Surg Pathol 2007; 31:363-70. [PMID: 17325477 DOI: 10.1097/01.pas.0000213376.09795.9f] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The recognition and differential diagnosis of pancreatic intraductal neoplasms (IN) have gained importance in the past few years, as the incidence of these tumors (especially intraductal papillary mucinous neoplasms-IPMNs) have risen to >10% of pancreatic resections, and their significance as precursors of invasive cancer is better appreciated. Acinar cell carcinomas (ACCs) are typically solid tumors; however, we have recently encountered 7 ACCs with either intraductal growth and/or a papillary/papillocystic pattern that could be mistaken for IN. The clinicopathologic features of these cases were studied. Four patients were male and 3 female, with a mean age of 59 and mean tumor size of 4.9 cm (as compared with 10 cm in conventional ACCs). Only 1 patient had metastasis at the time of diagnosis (as opposed to 50% in usual ACCs). In 5 cases, the tumors had nodular growth of sheet-forming acinar cells, some of which were within ducts, as evidenced by the polypoid nature of the process, partial ductal lining, and presence of small tributary ducts in the walls. In 3 cases, the tumor had papillary and/or papillocystic growth, at least focally. All cases had cystic areas. No mucin was identified. All expressed trypsin. Markers of ductal differentiation were either absent or focal. A minor endocrine component was present in 3. The main histologic findings that distinguished these tumors from IPMNs were the more sheetlike nature of the nodules (rather than villous or arborizing papillae), cuboidal cells, overall basophilia of the cytoplasm, prominent nucleoli, apical granules, intraluminal crystals or pale, acidophilic secretions (enzymatic condensations), and lack of mucin. In conclusion, some ACCs show intraductal growth or exhibit papillary patterns, which can mimic IN, especially IPMNs. In such cases, attention to morphologic details described above, and immunohistochemistry are helpful. The clinical significance of this variant is difficult to determine; however, it appears that the tumors are relatively small and metastasis at presentation is less common than typically seen in ACCs (1/7 vs. 50%).
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MESH Headings
- Adult
- Aged
- Aged, 80 and over
- Biomarkers, Tumor/analysis
- Carcinoma, Acinar Cell/chemistry
- Carcinoma, Acinar Cell/pathology
- Carcinoma, Acinar Cell/surgery
- Carcinoma, Pancreatic Ductal/chemistry
- Carcinoma, Pancreatic Ductal/pathology
- Carcinoma, Pancreatic Ductal/surgery
- Carcinoma, Papillary/chemistry
- Carcinoma, Papillary/pathology
- Carcinoma, Papillary/surgery
- Diagnosis, Differential
- Female
- Humans
- Male
- Middle Aged
- Pancreatic Ducts/chemistry
- Pancreatic Ducts/pathology
- Pancreatic Neoplasms/chemistry
- Pancreatic Neoplasms/pathology
- Pancreatic Neoplasms/surgery
- Periodic Acid-Schiff Reaction
- Tomography, X-Ray Computed
- Treatment Outcome
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Affiliation(s)
- Olca Basturk
- Department of Pathology, Wayne State University and Karmanos Cancer Institute, Detroit, MI 48201, USA.
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12
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Abstract
Although the majority of pancreatic neoplasms are infiltrating ductal adenocarcinomas or other neoplasms with ductal differentiation, neoplasms with acinar, endocrine, mixed, or uncertain differentiation constitute a diverse and distinctive group. The most common and best-characterized nonductal neoplasms are pancreatic endocrine neoplasm, acinar cell carcinoma, pancreatoblastoma, and solid pseudopapillary neoplasm. This review details the clinical and pathologic features of these nonductal neoplasms, highlighting diagnostic criteria including the use of specific immunohistochemical stains to define the cellular differentiation of the neoplasms.
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Affiliation(s)
- David S Klimstra
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
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13
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Abstract
Although cystic tumors of the pancreas are relatively rare, they constitute an increasingly important category. Advances in imaging and interventional techniques and the sharp drop in the mortality rate of pancreatic surgery have rendered pancreatic biopsies and resections commonplace specimens. Consequently, in the past two decades, the nature of many cystic tumors in this organ has been better characterized. The names of some existing entities were revised; for example, what was known as papillary-cystic tumor is now regarded as solid-pseudopapillary tumor. New entities, in particular, intraductal papillary mucinous neoplasm and its variants, such as oncocytic and intestinal subtypes were recognized. The importance of clinical and pathologic correlation in the evaluation of these lesions was appreciated, in particular, with regards to the multifocality of these lesions, their association with invasive carcinomas, and thus their 'preinvasive' nature. Consensus criteria for the distinction of these from the ordinary precursors of adenocarcinoma, the pancreatic intraepithelial neoplasia, were established. The definition of mucinous cystic neoplasms was refined; ovarian-like stroma has now become almost a requirement for the diagnosis of mucinous cystic neoplasia, and defined as such, the propensity of these tumors to occur in perimenopausal women became even more striking. The validity and clinical value of classifying the pancreatic cysts of mucinous type as adenoma, borderline, CIS and invasive have been established. Related to this, the importance of thorough sampling in accurate classification of these mucinous lesions was recognized. Greater accessibility of the pancreas afforded by improved invasive as well as noninvasive modalities has also increased the detection of otherwise clinically silent cystic tumors, which has led to the recognition of more innocuous entities such as acinar cell cystadenoma and squamoid cyst of pancreatic ducts. As the significance of the cystic lesions emerged, cystic forms of otherwise typically solid tumors were also better characterized. Thus, significant developments have taken place in the classification and our understanding of pancreatic cystic tumors in the past few years, and experience with these lesions is likely to grow exponentially in the coming years.
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Affiliation(s)
- N Volkan Adsay
- Department of Pathology, Harper Hospital and Karmanos Cancer Institute, Wayne State University, Detroit, MI, USA.
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14
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Al-Saif F, Al-Masloom A, Johnson MA, Bain VG, Sandha GS, Ritchie DBC, Shapiro AMJ. Acinar cell cystadenocarcinoma of the pancreas in a 4-year-old child. Pancreas 2006; 33:316-7. [PMID: 17003658 DOI: 10.1097/01.mpa.0000229011.70161.d9] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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15
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Natsume T, Watanabe Y, Maruyama T, Tanaka H, Sunouchi K, Tohma T, Noju M, Muto Y, Tohnosu N, Uehara T, Shimizu SI, Ochiai T, Nabeya Y. Successful resection of a liver metastasis from AFP-producing pancreatic cancer resulting in long-term survival: a case report and review of literature. Pancreas 2005; 31:416-9. [PMID: 16258380 DOI: 10.1097/01.mpa.0000179727.15716.82] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The prognosis of patients with alpha-fetoprotein (AFP)-producing pancreatic cancer is generally very poor. We, however, present a case of a 33-year-old man who survived AFP-producing pancreatic cancer and its metachronous liver metastasis. The patient had undergone a curative total pancreatectomy for AFP-producing pancreas head cancer invading to the tail, which was postoperatively confirmed by immunohistochemical staining of the resected specimen. At 1 year and 4 months after the operation, the serum AFP level was elevated to 26 ng/mL, and a 2.6 cm-sized mass was found in the lateral segment of the liver. He underwent lateral segmentectomy, and the tumor was histopathologically diagnosed as having metastasized from the AFP-producing pancreatic cancer removed earlier. The patient is doing well 8 years and 5 months after resecting the liver metastasis, with no signs of recurrence. This case suggests that surgery may also be a treatment of choice for patients with liver metastasis from AFP-producing pancreatic cancer, particularly for those with a metachronous and solitary tumor. It should be remembered that some pancreatic cancers produce AFP and that monitoring of postoperative serum AFP levels in such cases will be useful for early detection of recurrence and selection of appropriate surgical intervention.
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Affiliation(s)
- Toshiyuki Natsume
- Department of Surgery, Funabashi Municipal Medical Center, Funabashi, Chiba, Japan.
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16
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Tatli S, Mortele KJ, Levy AD, Glickman JN, Ros PR, Banks PA, Silverman SG. CT and MRI features of pure acinar cell carcinoma of the pancreas in adults. AJR Am J Roentgenol 2005; 184:511-9. [PMID: 15671372 DOI: 10.2214/ajr.184.2.01840511] [Citation(s) in RCA: 93] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
OBJECTIVE We sought to describe the CT and MRI features of pure acinar cell carcinoma of the pancreas in adults. MATERIALS AND METHODS Eleven patients (six women and five men; mean age, 64 years) with acinar cell carcinoma, documented by pathologic examination of resected specimens, underwent CT (n=9) or MRI (n=2) examinations. Two radiologists evaluated imaging studies and determined, by consensus, the following data for each tumor: size, location, margination, internal density or signal intensity, and contrast enhancement pattern. In addition, they assessed the presence of calcification, pancreatic or bile duct dilation, and metastases. Imaging features were correlated with gross and microscopic pathologic features of the tumors. RESULTS Masses were distributed throughout the pancreas (head, n=5; body, n=2; and tail, n=4). The mean largest dimensions were 6.0 x 5.3 cm (range, from 2 x 1.7 to 15 x 11 cm). Tumors were oval (n=5), round (n=4), or lobular (n=2). Ten (91%) masses were well marginated; nine (82%) were exophytic. Five (45%) masses enhanced homogeneously; the remaining tumors contained cystic areas. All masses enhanced less than the surrounding pancreas. Three (27%) masses contained calcifications. Four (80%) masses invaded the duodenum. Common bile and pancreatic duct dilatation was present in two and three patients, respectively. One patient had metastatic liver disease at presentation. CONCLUSION Pure acinar cell carcinoma of the pancreas is usually an exophytic, oval or round, well-marginated, and hypovascular mass on CT and MRI. It typically is completely solid when small and contains cystic areas due to necrosis when large.
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Affiliation(s)
- Servet Tatli
- Department of Radiology, Division of Abdominal Imaging and Intervention, Brigham and Women's Hospital, Harvard Medical School, 75 Francis St., Boston, MA 02115, USA.
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Faria SC, Tamm EP, Loyer EM, Szklaruk J, Choi H, Charnsangavej C. Diagnosis and staging of pancreatic tumors. Semin Roentgenol 2004; 39:397-411. [PMID: 15372753 DOI: 10.1016/j.ro.2004.06.012] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Silvana C Faria
- Department of Radiology, Division of Diagnostic Imaging, The University of Texas M. D. Anderson Cancer Center, Houston, TX 77030, USA
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18
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Colombo P, Arizzi C, Roncalli M. Acinar cell cystadenocarcinoma of the pancreas: Report of rare case and review of the literature. Hum Pathol 2004; 35:1568-71. [PMID: 15619219 DOI: 10.1016/j.humpath.2004.08.004] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Most exocrine pancreatic tumors are of ductal origin, whereas acinar cell adenocarcinomas are unusual (1% to 2% of all exocrine pancreatic neoplasms). We recently found a cystic adenocarcinoma of the pancreatic body whose cells had the characteristics of acinar cells, which we term acinar cell cystadenocarcinoma. Macroscopically, this tumor consists of a large multilocular cystic mass with a pseudocapsule and a spongy appearance on the cut surface. Microscopically, the cysts are lined by a single layer of cuboid/columnar cells. The cytoplasm has the characteristics of acinar cells, with eosinophilic granules in the apex and prominent nucleoli. Immunohistochemically, the cells express alpha1-antitrypsin, trypsin, and lipase in their cytoplasm, thus confirming the acinar origin of the tumor. A review of the literature revealed only 5 other cases of this tumor reported since its first description in 1981. Follow-up data are available for 4 of these; all of the affected patients had metastases at presentation or a few months later, and 2 died of the disease, at 13 and 37 months after diagnosis. Although this variant of adenocarcinoma of the pancreas is not prognostically different from the classic solid type (few patients survive more than 5 years), we believe that it is important because of its extreme rarity.
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Affiliation(s)
- Piergiuseppe Colombo
- Department of Pathology, Humanitas Clinical Institute, University of Milan School of Medicine, Rozzano, Milan, Itlay
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Chiou YY, Chiang JH, Hwang JI, Yen CH, Tsay SH, Chang CY. Acinar cell carcinoma of the pancreas: clinical and computed tomography manifestations. J Comput Assist Tomogr 2004; 28:180-6. [PMID: 15091120 DOI: 10.1097/00004728-200403000-00005] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
PURPOSE Acinar cell carcinoma (ACC) is a subtype of pancreatic neoplasm sufficiently rare that its imaging has not been fully analyzed. The purpose of this article is to present the computed tomography (CT) appearance of ACC of the pancreas. METHODS Clinical data and CT studies of 10 patients (7 male and 3 female) with pathologically proven ACC of the pancreas were reviewed. Among the CT features emphasized were the presence of a well-defined enhancing capsule, foci of internal calcification, intratumoral hemorrhage, presence of a central hypodense area, and degree of contrast enhancement. RESULTS The presenting symptoms of ACC of the pancreas were nonspecific. An elevated serum level of alpha-fetoprotein, carcinoembryonic acid, and CA 19-9 was noted in 2 (20%), 1 (10%), and 3 (30%) patients, respectively. The tumor locations were in the uncinate process in 4 (40%), in the head and neck in 2 (20%), in the body in 1 (10%), and in the tail in 3 (30%) patients. The average tumor size was 7.2 cm (range: 3.3-18 cm). A well-defined enhancing capsule, internal foci of calcification, and intratumoral hemorrhage appeared in 6 (60%), 5 (50%), and 0 tumors, respectively. Eight (80%) tumors had a central hypodense area; of these, 4 (40%) tumors exhibited a hypodense area greater than 50% of the tumor. During dynamic CT in 8 patients, 6 tumors showed early arterial (EA) enhancement and persisted into the portal venous (PV) phase, whereas the other 2 tumors revealed enhancement in the EA phase and washout in PV phase. CONCLUSION Acinar cell carcinoma typically presents as a sizable pancreatic mass with a well-defined enhancing capsule and internal calcifications. Significant central hypodensity is frequently present. Recognition of these features can provide clues to the CT diagnosis of ACC.
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Affiliation(s)
- Yi-You Chiou
- Department of Radiology, Taipei Veterans General Hospital, and School of Medicine, National Yang-Ming University, Taipei, Taiwan.
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20
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Abstract
In this article, the radiological manifestations of a variety of uncommon tumors of the pancreas are illustrated, with emphasis placed on their appearance at helical CT. Islet cell tumors, because of their vascularity, typically present as masses that are hyperattenuating to the normal pancreas at dual-phase helical CT. Lymphomas appear as hypoattenuating focal lesions or can diffusely infiltrate the gland. Absence of biliary tree dilatation, despite the presence of a bulky tumor, or associated extensive retroperitoneal adenopathy should offer clues to the diagnosis. Pancreatic metastases are usually seen in patients with advanced cancers, although isolated metastases from renal cell carcinoma can occurs years after the original tumor; such patients may benefit from surgical resection. Finally, the appearance of some rare neoplasms of mesenchymal origin is discussed.
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Affiliation(s)
- Sheila Sheth
- The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins Medical Institutions, 601 North Caroline Street, JHOC-3250, Baltimore, MD 21287, USA
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21
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Chatelain D, Paye F, Mourra N, Scoazec JY, Baudrimont M, Parc R, Flejou JF. Unilocular acinar cell cystadenoma of the pancreas an unusual acinar cell tumor. Am J Clin Pathol 2002; 118:211-4. [PMID: 12162680 DOI: 10.1309/jqq1-06ny-0f3j-peu9] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Abstract
We report an unusual case of acinar cell cystadenoma of the pancreas in a 52-year-old man treated for pulmonary adenocarcinoma. The lesion, located in the body of the pancreas, was revealed incidentally by abdominal computed tomography during follow-up for a pulmonary neoplasm. A left pancreatectomy was performed. The unilocular cystic lesion measured 5 cm and was lined by a single layer of columnar acinar cells with eosinophilic granular cytoplasm, faintly stained by periodic acid-Schiff. Immunohistochemical analysis showed the lining cells were positive for cytokeratin and trypsin, and electronic microscopy showed that they contained zymogen granules. Acinar cell tumors of the pancreas are rare and include acinar cell carcinomas, acinar cell cystadenocarcinomas, and acinar cell adenomas. We report a case of cystic acinar cell tumor of the pancreas with benign gross and histologic features that could be added to the list of cystic neoplasms of the pancreas as acinar cell cystadenoma.
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Affiliation(s)
- Denis Chatelain
- Anatomic Pathology Department, St Antoine Hospital, Paris, France
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22
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Zamboni G, Terris B, Scarpa A, Kosmahl M, Capelli P, Klimstra DS, Lam PWY, Klöppel G. Acinar cell cystadenoma of the pancreas: a new entity? Am J Surg Pathol 2002; 26:698-704. [PMID: 12023573 DOI: 10.1097/00000478-200206000-00002] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
This report describes a newly observed cystic lesion of the pancreas showing acinar cell differentiation. The patients affected by this lesion included seven women and three men (age range 16-66 years). In six patients, all of whom were female and all but one of whom suffered from abdominal pain, the cystic lesions (diameters, 4-15 cm) were detected by imaging techniques and subsequently removed. In four patients the cystic lesions were incidental findings. Eight lesions occurred as unifocal, unilocular or multilocular cysts in the head (n = 6) or tail (n = 2) of the pancreas. One lesion was bifocal (head and tail) and another involved the entire pancreas. The cysts were only rarely connected with the pancreatic duct system, but with acinar structures. Their lining cells expressed pancreatic enzymes and lacked any cellular atypia or proliferative activity (Ki67 index <1%). For a follow-up period of 6-84 months all patients remained alive and well. Although a nonneoplastic nature cannot be fully excluded, we propose that this lesion, composed of well-differentiated acinar cells, may represent the benign counterpart of the well-recognized acinar cystadenocarcinoma. We therefore suggest the term acinar cell cystadenoma.
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23
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Abraham SC, Wu TT, Hruban RH, Lee JH, Yeo CJ, Conlon K, Brennan M, Cameron JL, Klimstra DS. Genetic and immunohistochemical analysis of pancreatic acinar cell carcinoma: frequent allelic loss on chromosome 11p and alterations in the APC/beta-catenin pathway. THE AMERICAN JOURNAL OF PATHOLOGY 2002; 160:953-62. [PMID: 11891193 PMCID: PMC1867188 DOI: 10.1016/s0002-9440(10)64917-6] [Citation(s) in RCA: 223] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Acinar cell carcinomas (ACCs) are rare malignant tumors of the exocrine pancreas. The specific molecular alterations that characterize ACCs have not yet been elucidated. ACCs are morphologically and genetically distinct from the more common pancreatic ductal adenocarcinomas. Instead, the morphological, immunohistochemical, and clinical features of ACCs overlap with those of another rare pancreatic neoplasm, pancreatoblastoma. We have recently demonstrated a high frequency of allelic loss on chromosome arm 11p and mutations in the APC/beta-catenin pathway in pancreatoblastomas, suggesting that similar alterations might also play a role in the pathogenesis of some ACCs. We analyzed a series of 21 ACCs for somatic alterations in the APC/beta-catenin pathway and for allelic loss on chromosome 11p. In addition, we evaluated the ACCs for alterations in p53 and Dpc4 expression using immunohistochemistry, and for microsatellite instability (MSI) using polymerase chain amplification of a panel of microsatellite markers. Allelic loss on chromosome 11p was the most common genetic alteration in ACCs, present in 50% (6 of 12 informative cases). Molecular alterations in the APC/beta-catenin pathway were detected in 23.5% (4 of 17) of the carcinomas, including one ACC with an activating mutation of the beta-catenin oncogene and three ACCs with truncating APC mutations. One ACC (1 of 13, 7.6%) showed allelic shifts in four of the five markers tested (MSI-high), two (15.4%) showed an allelic shift in only one of the five markers tested (MSI-low), and no shifts were detected in the remaining 10 cases. The MSI-high ACC showed medullary histological features. In contrast, no loss of Dpc4 protein expression or p53 accumulation was detected. These results indicate that ACCs are genetically distinct from pancreatic ductal adenocarcinomas, but some cases contain genetic alterations common to histologically similar pancreatoblastomas.
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Affiliation(s)
- Susan C Abraham
- Department of Pathology, Division of GI/LiverPathology, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21205-2196, USA.
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Abstract
Acinar cell carcinomas (ACCs) are rare neoplasms that represent less than 2% of all exocrine tumors of the pancreas. Although they occur more often in adults between the 5th and 7th decades of life, a few cases have been reported in children. Histologically, ACCs can resemble islet cell tumors, but they differ in their ultrastructural and immunohistochemical features. Although ACCs present a bland histology, they are highly malignant and the survival of patients with these tumors, even though better than that of those with ductal cell carcinomas, is generally poor.
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Affiliation(s)
- N G Ordóñez
- The University of Texas M.D. Anderson Cancer Center, Houston 77030, USA
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25
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Jones EA, Clement-Jones M, James OF, Wilson DI. Differences between human and mouse alpha-fetoprotein expression during early development. J Anat 2001; 198:555-9. [PMID: 11430694 PMCID: PMC1468244 DOI: 10.1046/j.1469-7580.2001.19850555.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Alpha-fetoprotein (AFP) is the major serum protein during development. AFP is one of the earliest proteins to be synthesised by the embryonic liver. The synthesis of AFP decreases dramatically after birth and only trace amounts are expressed in the adult liver. The tissue distribution of AFP in early human embryogenesis has not been defined. We have studied the expression pattern of AFP mRNA in human and mouse embryos by in situ hybridisation. In humans, AFP is expressed in the hepatic diverticulum at 26 d postovulation as it differentiates from the foregut endoderm (i.e. in the most primitive hepatocytes). It is also expressed in the endoderm of the gastrointestinal tract and in the yolk sac at this age. AFP is subsequently expressed in the mesonephros and transiently in the developing pancreas. In the mouse, no expression of AFP was observed in the mesonephros but other sites of expression were similar. Thus AFP has a distinct temporospatial expression pattern during the embryonic period and this differs between human and mouse species. It is interesting that AFP is expressed by tumours such as primitive gastrointestinal, renal cell and pancreatic tumours as well as those of hepatocyte origin. This distribution reflects the sites of AFP expression during development.
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Affiliation(s)
- E A Jones
- Institute of Human Genetics, School of Biochemistry and Genetics, University of Newcastle upon Tyne, UK.
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26
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Lam K, Lo C, Wat M, Fan ST. Malignant insulinoma with hepatoid differentiation: a unique case with alpha-fetoprotein production. Endocr Pathol 2001; 12:351-4. [PMID: 11740056 DOI: 10.1385/ep:12:3:351] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Hepatoid carcinomas are uncommon extra-hepatic neoplasms exhibiting features of hepatocellular carcinoma and they are most frequently described in the stomach. We report a 64-year-old woman with a malignant insulinoma showing focal hepatoid differentiation and biochemical evidence of alpha-fetoprotein (AFP) production. The current case is the first malignant insulinoma with hepatoid differentiation. Resection of the primary tumor followed by regional embolization was peformed. The patient died 22 months after initial presentation. Thus, the presence of hepatoid differentiation in pancreatic tumor should be noted as the tumor may be associated with elevated AFP. The features of pancreatic hepatoid carcinomas are discussed.
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Affiliation(s)
- K Lam
- Department of Pathology, University of Hong Kong Medical Center, Queen Mary Hospital.
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