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Hesami M, Blake M, Anderson MA, Asmundo L, Kilcoyne A, Najmi Z, Caravan PD, Catana C, Czawlytko C, Abdar Esfahani S, Kambadakone AR, Samir A, McDermott S, Domachevsky L, Ursprung S, Catalano OA. Diagnostic Anatomic Imaging for Neuroendocrine Neoplasms: Maximizing Strengths and Mitigating Weaknesses. J Comput Assist Tomogr 2024:00004728-990000000-00316. [PMID: 38657156 DOI: 10.1097/rct.0000000000001615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
ABSTRACT Neuroendocrine neoplasms are a heterogeneous group of gastrointestinal and lung tumors. Their diverse clinical manifestations, variable locations, and heterogeneity present notable diagnostic challenges. This article delves into the imaging modalities vital for their detection and characterization. Computed tomography is essential for initial assessment and staging. At the same time, magnetic resonance imaging (MRI) is particularly adept for liver, pancreatic, osseous, and rectal imaging, offering superior soft tissue contrast. The article also highlights the limitations of these imaging techniques, such as MRI's inability to effectively evaluate the cortical bone and the questioned cost-effectiveness of computed tomography and MRI for detecting specific gastric lesions. By emphasizing the strengths and weaknesses of these imaging techniques, the review offers insights into optimizing their utilization for improved diagnosis, staging, and therapeutic management of neuroendocrine neoplasms.
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Affiliation(s)
- Mina Hesami
- From the Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | - Michael Blake
- From the Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | - Mark A Anderson
- From the Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | | | - Aoife Kilcoyne
- From the Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | - Zahra Najmi
- From the Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | - Peter D Caravan
- From the Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | - Ciprian Catana
- From the Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | - Cynthia Czawlytko
- From the Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | - Shadi Abdar Esfahani
- From the Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | - Avinash R Kambadakone
- From the Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | - Anthony Samir
- From the Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | - Shaunagh McDermott
- From the Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | - Liran Domachevsky
- Department of Nuclear Medicine, The Chaim Sheba Medical Center, Tel Hashomer, Israel
| | - Stephan Ursprung
- Department of Radiology, University Hospital Tuebingen, Tuebingen, Germany
| | - Onofrio A Catalano
- From the Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA
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2
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Ren SJ, Wang X, Ke NW, Tan QQ, Yang F, Yao WQ, Tan CL, Liu XB. Clinicopathological features and long-term prognosis of purely cystic pancreatic neuroendocrine tumors: A single-center experience. Asian J Surg 2023; 46:774-779. [PMID: 35850904 DOI: 10.1016/j.asjsur.2022.07.029] [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: 08/16/2021] [Revised: 12/12/2021] [Accepted: 07/07/2022] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Pancreatic neuroendocrine tumors (pNETs) are heterogenous neoplasms, of which the prognosis varies widely. Purely cystic pancreatic neuroendocrine tumors (C-pNETs) are a small subset of pNETs in which data are extremely rare. This study aimed to compare clinicopathological and long-term survival differences between C-pNETs and solid pNETs (S-pNETs). METHODS A retrospective review of 242 patients with pNETs underwent resection in our institution from 2009 to 2019 was conducted. Demography characteristics, clinicopathological features and long-term outcomes of them were analyzed. RESULTS Sixteen out of 242 patients (6.6%) were identified as C-pNETs. Compared with S-pNETs, C-pNETs were more frequently non-functional (75% vs 45%, P = 0.02), and the median tumor diameter of C-pNETs was smaller (36 mm vs. 47 mm, P = 0.001). And the accuracy of preoperative diagnosis of C-pNETs was significantly lower (31% vs 78%, P = 0.001). Of note, the majority of C-pNETs were well-differentiated with G1 (81% vs 35%, P = 0.001). And there were no G3 (0 vs 7%, P = 0.001) in C-pNETs. No T4 stage or R1/R2 surgical margin detected in C-pNETs. And only one C-pNETs (6%) had regional lymph node metastasis (N) or synchronous distant metastasis (M). Additionally, only one patient with C-pNETs (6%) suffered tumor recurrence, compared with 24 (13%) for S-pNETs. And survival analysis showed the patients with C-pNETs seemed to be with better disease-free survival (P = 0.26). CONCLUSION C-pNETs are rare subtype with possibly less aggressive behavior comparing with their solid counterparts. Recurrence and tumor-related death still occurs in patients with resected C-pNETs, although they tend to be with more favorable prognosis.
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Affiliation(s)
- Shu-Jie Ren
- Department of Pancreatic Surgery, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan Province, China
| | - Xing Wang
- Department of Pancreatic Surgery, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan Province, China
| | - Neng-Wen Ke
- Department of Pancreatic Surgery, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan Province, China
| | - Qing-Quan Tan
- Department of Pancreatic Surgery, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan Province, China
| | - Fan Yang
- Department of Radiology, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan Province, China
| | - Wen-Qing Yao
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan Province, China
| | - Chun-Lu Tan
- Department of Pancreatic Surgery, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan Province, China.
| | - Xu-Bao Liu
- Department of Pancreatic Surgery, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan Province, China.
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3
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Koehler B, Ryoo DY, Krishna SG. A Review of Endoscopic Ultrasound-Guided Chemoablative Techniques for Pancreatic Cystic Lesions. Diagnostics (Basel) 2023; 13:diagnostics13030344. [PMID: 36766449 PMCID: PMC9914819 DOI: 10.3390/diagnostics13030344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 01/10/2023] [Accepted: 01/13/2023] [Indexed: 01/19/2023] Open
Abstract
Pancreatic cystic lesions (PCLs) are known precursors to pancreatic cancer, one of the deadliest types of cancer worldwide. Surgical removal or pancreatectomies remain the central approach to managing precancerous high-risk PCLs. Endoscopic ultrasound (EUS)-guided therapeutic management of PCLs is a novel management strategy for patients with prohibitive surgical risks. Various ablation techniques have been explored in previous studies utilizing EUS-guided fine needle injection (FNI) of alcohol and chemotherapeutic agents. This review article focuses on EUS-FNI and chemoablation, encompassing the evolution of chemoablation, pancreatic cyst selection, chemotherapy drug selection, including novel agents, and a discussion of its safety and efficacy.
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Affiliation(s)
- Bryn Koehler
- Department of Internal Medicine, Ohio State University Wexner Medical Center, Columbus, OH 43210, USA
| | - Da Yeon Ryoo
- Department of Internal Medicine, Ohio State University Wexner Medical Center, Columbus, OH 43210, USA
| | - Somashekar G. Krishna
- Division of Gastroenterology, Department of Internal Medicine, Ohio State University Wexner Medical Center, Columbus, OH 43210, USA
- Correspondence:
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4
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Galgano SJ, Morani AC, Gopireddy DR, Sharbidre K, Bates DDB, Goenka AH, Arif-Tiwari H, Itani M, Iravani A, Javadi S, Faria S, Lall C, Bergsland E, Verma S, Francis IR, Halperin DM, Chatterjee D, Bhosale P, Yano M. Pancreatic neuroendocrine neoplasms: a 2022 update for radiologists. ABDOMINAL RADIOLOGY (NEW YORK) 2022; 47:3962-3970. [PMID: 35244755 DOI: 10.1007/s00261-022-03466-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 02/17/2022] [Accepted: 02/18/2022] [Indexed: 01/18/2023]
Abstract
Pancreatic neuroendocrine neoplasms (PaNENs) are a unique group of pancreatic neoplasms with a wide range of clinical presentations and behaviors. Given their heterogeneous appearance and increasing detection on cross-sectional imaging, it is essential that radiologists understand the variable presentation and distinctions PaNENs display compared to other pancreatic neoplasms. Additionally, some of these neoplasms may be hormonally functional, and it is imperative that radiologists be aware of the common clinical presentations of hormonally active PaNENs. Knowledge of PaNEN pathology and treatments may influence which imaging modality is optimal for each patient. Each imaging modality used for PaNENs has distinct advantages and disadvantages, particularly in different treatment settings. Thus, the focus of this manuscript is to provide an update for the radiologist on PaNEN pathology, imaging, and treatments.
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Affiliation(s)
- Samuel J Galgano
- Department of Radiology, University of Alabama at Birmingham, Birmingham, AL, USA.
| | | | - Dheeraj R Gopireddy
- Department of Radiology, University of Florida-Jacksonville, Jacksonville, FL, USA
| | - Kedar Sharbidre
- Department of Radiology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - David D B Bates
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Ajit H Goenka
- Department of Radiology, Mayo Clinic, Rochester, MN, USA
| | - Hina Arif-Tiwari
- Department of Radiology, University of Arizona-Tuscon, Tuscon, AZ, USA
| | - Malak Itani
- Mallinckrodt Institute of Radiology, Washington University in St. Louis, St. Louis, MO, USA
| | - Amir Iravani
- Mallinckrodt Institute of Radiology, Washington University in St. Louis, St. Louis, MO, USA
| | - Sanaz Javadi
- Department of Radiology, M.D. Anderson Cancer Center, Houston, TX, USA
| | - Silvana Faria
- Department of Radiology, M.D. Anderson Cancer Center, Houston, TX, USA
| | - Chandana Lall
- Department of Radiology, University of Florida-Jacksonville, Jacksonville, FL, USA
| | - Emily Bergsland
- Department of Medicine, University of California San Francisco, San Francisco, CA, USA
| | - Sadhna Verma
- Department of Radiology, University of Cincinnati, Cincinnati, OH, USA
| | - Isaac R Francis
- Department of Radiology, Michigan Medicine, Ann Arbor, MI, USA
| | - Daniel M Halperin
- Department of Gastrointestinal Medical Oncology, M.D. Anderson Cancer Center, Houston, TX, USA
| | - Deyali Chatterjee
- Department of Pathology, M.D. Anderson Cancer Center, Houston, TX, USA
| | - Priya Bhosale
- Department of Radiology, M.D. Anderson Cancer Center, Houston, TX, USA
| | - Motoyo Yano
- Department of Radiology, Mayo Clinic Arizona, Scottsdale, AZ, USA
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5
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Bell PD, Singhi AD. Integrating Molecular Analysis into the Pathologic Evaluation of Pancreatic Cysts. Surg Pathol Clin 2022; 15:455-468. [PMID: 36049828 DOI: 10.1016/j.path.2022.05.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Abstract
The development of cross-sectional imaging techniques has enhanced the detection of pancreatic cystic lesions (PCLs). PCLs are found in approximately 2% of the general population, often as incidentally detected lesions on computed tomography or MRI during the evaluation of other medical conditions. Broadly, PCLs are classified as mucinous or nonmucinous. Mucinous PCLs include mucinous cystic neoplasms and intraductal papillary mucinous neoplasms. Nonmucinous PCLs include pseudocysts, serous cystadenomas, solid pseudopapillary neoplasms, and cystic pancreatic neuroendocrine tumors, as well as cystic acinar cell carcinoma, cystic degeneration of pancreatic ductal adenocarcinoma, lymphoepithelial cyst, and others.
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Affiliation(s)
- Phoenix D Bell
- Department of Pathology, University of Pittsburgh Medical Center, 200 Lothrop St. Pittbsurgh, PA 15213, USA.
| | - Aatur D Singhi
- Department of Pathology, University of Pittsburgh Medical Center, 200 Lothrop St. Pittbsurgh, PA 15213, USA
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6
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Buerlein RCD, Shami VM. Management of pancreatic cysts and guidelines: what the gastroenterologist needs to know. Ther Adv Gastrointest Endosc 2021; 14:26317745211045769. [PMID: 34589706 PMCID: PMC8474323 DOI: 10.1177/26317745211045769] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 08/25/2021] [Indexed: 12/15/2022] Open
Abstract
The prevalence of pancreatic cysts has increased significantly over the last
decade, partly secondary to increased quality and frequency of cross-sectional
imaging. While the majority never progress to cancer, a small number will and
need to be followed. The management of pancreatic cysts can be both confusing
and intimidating due to the multiple guidelines with varying recommendations.
Despite the differences in the specifics of the guidelines, they all agree on
several high-risk features that should get the attention of any clinician when
assessing a pancreatic cyst: presence of a mural nodule or solid component,
dilation of the main pancreatic duct (or presence of main duct intraductal
papillary mucinous neoplasm), pancreatic cyst size ⩾3–4 cm, or positive cytology
on pancreatic cyst fluid aspiration. Other important criteria to consider
include rapid cyst growth (⩾5 mm/year), elevated serum carbohydrate antigen 19-9
levels, new-onset diabetes mellitus, or acute pancreatitis thought to be related
to the cystic lesion.
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Affiliation(s)
| | - Vanessa M Shami
- University of Virginia Digestive Health, 1215 Lee Street, Charlottesville, VA 22903, USA
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7
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Cystic pancreatic lesions: MR imaging findings and management. Insights Imaging 2021; 12:115. [PMID: 34374885 PMCID: PMC8355307 DOI: 10.1186/s13244-021-01060-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 07/17/2021] [Indexed: 12/14/2022] Open
Abstract
Cystic pancreatic lesions (CPLs) are frequently casual findings in radiological examinations performed for other reasons in patients with unrelated symptoms. As they require different management according to their histological nature, differential diagnosis is essential. Radiologist plays a key role in the diagnosis and management of these lesions as imaging is able to correctly characterize most of them and thus address to a correct management. The first step for a correct characterization is to look for a communication between the CPLs and the main pancreatic duct, and then, it is essential to evaluate the morphology of the lesions. Age, sex and a history of previous pancreatic pathologies are important information to be used in the differential diagnosis. As some CPLs with different pathologic backgrounds can show the same morphological findings, differential diagnosis can be difficult, and thus, the final diagnosis can require other techniques, such as endoscopic ultrasound, endoscopic ultrasound-fine needle aspiration and endoscopic ultrasound-through the needle biopsy, and multidisciplinary management is important for a correct management.
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8
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When pancreas solid mass meets liver cystic lesion: A case report. JOURNAL OF PANCREATOLOGY 2021. [DOI: 10.1097/jp9.0000000000000065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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9
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Cheng Y, Wu D, Wang L, Liu H, Xiong Y, Xu J, Hu S, Zhan H. Cystic Pancreatic Neuroendocrine Tumors Represent a Distinct Clinical Entity with Less Aggressive Biological Behaviors. J Surg Res 2020; 260:134-140. [PMID: 33340866 DOI: 10.1016/j.jss.2020.11.054] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 09/26/2020] [Accepted: 11/01/2020] [Indexed: 12/28/2022]
Abstract
BACKGROUND Pancreatic neuroendocrine tumors (pNETs) uncommonly present as cystic lesions. There is a gap in knowledge of their clinicopathological characteristics and biological behaviors. Previous reported studies remained inconsistent and controversial. The purpose of this study is to investigate the clinicopathological features of cystic pNET and determine if it represents a distinct clinical entity by comparing its characteristics with those of solid pNETs. METHODS Patients with pNETs who underwent surgical resections from January 2014 to April 2019 at Qilu Hospital of Shandong University were reviewed retrospectively. Demographics, clinical characteristics, surgical data, and oncological as well as histological characteristics of cystic pNETs and their solid counterparts were collected and analyzed. RESULTS A total of 122 patients were included in this study, and 10.7% (13/122) patients were cystic. There is no significant difference between cystic pNETs and solid pNETs in age (43.6 ± 15.8 versus 50.9 ± 14.5 y, P = 0.093) and sex distribution (P = 0.085). Cystic pNETs are more likely to be asymptomatic (61.5% versus 23.9%, P = 0.008) and nonfunctional (92.3% versus 52.7%, P = 0.006) than solid pNETs. However, the tumor size (4.8 ± 4.5 versus 2.8 ± 1.9 cm, P = 0.124), proportion of multiple endocrine neoplasia type 1 (92.3% versus 98.2%, P = 0.289), and tumor location (P = 0.154) are similar in both groups. Compared with solid pNETs, cystic pNETs have a lower Ki-67 index and incidence of liver metastasis, but the difference is not significant. CONCLUSIONS Cystic pNETs are more likely to be nonfunctional and indolent and seem to exhibit less aggressive biological behaviors than solid pNETs. Conservative approach should be considered for certain selected patients.
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Affiliation(s)
- Yugang Cheng
- Division of Pancreatic Surgery, Department of General Surgery, Qilu Hospital, Shandong University, Jinan, Shandong Province, China
| | - Dong Wu
- Division of Pancreatic Surgery, Department of General Surgery, Qilu Hospital, Shandong University, Jinan, Shandong Province, China
| | - Lei Wang
- Division of Pancreatic Surgery, Department of General Surgery, Qilu Hospital, Shandong University, Jinan, Shandong Province, China
| | - Han Liu
- Division of Pancreatic Surgery, Department of General Surgery, Qilu Hospital, Shandong University, Jinan, Shandong Province, China
| | - Yacheng Xiong
- Division of Pancreatic Surgery, Department of General Surgery, Qilu Hospital, Shandong University, Jinan, Shandong Province, China
| | - Jianwei Xu
- Division of Pancreatic Surgery, Department of General Surgery, Qilu Hospital, Shandong University, Jinan, Shandong Province, China
| | - Sanyuan Hu
- Division of Pancreatic Surgery, Department of General Surgery, Qilu Hospital, Shandong University, Jinan, Shandong Province, China
| | - Hanxiang Zhan
- Division of Pancreatic Surgery, Department of General Surgery, Qilu Hospital, Shandong University, Jinan, Shandong Province, China.
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10
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Yasuda M, Takeda S, Lee M, Hoshi S, Hoshi T, Tanaka Y, Miyajima S, Takaya H, Kajimura K. Small Cystic Pancreatic Neuroendocrine Neoplasm with Huge Liver and Bone Metastases. Intern Med 2020; 59:3027-3032. [PMID: 33268697 PMCID: PMC7759689 DOI: 10.2169/internalmedicine.5038-20] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Pancreatic neuroendocrine neoplasms occasionally have a cystic component. We herein report a case of multiple hepatic tumors, including a huge one and a 24-mm sized pancreatic cystic lesion. The hepatic tumor showed an enhancement pattern consistent with hepatic adenoma. The pancreatic cystic lesion revealed a thickened outside border and a solid inside component, which was enhanced following a contrast study, suggesting cystic pancreatic neuroendocrine neoplasm. Surgical resection was performed. After the surgery, somatostatin receptor scintigraphy detected an occult lumbar spine metastasis. Huge multiple liver and bone metastases of the neuroendocrine neoplasm G2 component were seen, with a G1 small primary lesion.
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Affiliation(s)
- Muneji Yasuda
- Department of Gastroenterology, Kishiwada City Hospital, Japan
| | - Shotai Takeda
- Department of Gastroenterology, Kishiwada City Hospital, Japan
| | - Minami Lee
- Department of Gastroenterology, Kishiwada City Hospital, Japan
| | - Susumu Hoshi
- Department of Gastroenterology, Kishiwada City Hospital, Japan
| | - Tomoko Hoshi
- Department of Gastroenterology, Kishiwada City Hospital, Japan
| | - Yuichi Tanaka
- Department of Gastroenterology, Kishiwada City Hospital, Japan
| | - Shinji Miyajima
- Department of Gastroenterology, Kishiwada City Hospital, Japan
| | - Haruo Takaya
- Department of Gastroenterology, Kishiwada City Hospital, Japan
| | - Kozo Kajimura
- Department of Gastroenterology, Kishiwada City Hospital, Japan
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11
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Lee L, Ito T, Jensen RT. Prognostic and predictive factors on overall survival and surgical outcomes in pancreatic neuroendocrine tumors: recent advances and controversies. Expert Rev Anticancer Ther 2019; 19:1029-1050. [PMID: 31738624 DOI: 10.1080/14737140.2019.1693893] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Introduction: Recent advances in diagnostic modalities and therapeutic agents have raised the importance of prognostic factors in predicting overall survival, as well as predictive factors for surgical outcomes, in tailoring therapeutic strategies of patients with pancreatic neuroendocrine neoplasms (panNENs).Areas covered: Numerous recent studies of panNEN patients report the prognostic values of a number of clinically related factors (clinical, laboratory, imaging, treatment-related factors), pathological factors (histological, classification, grading) and molecular factors on long-term survival. In addition, an increasing number of studies showed the usefulness of various factors, specifically biomarkers and molecular makers, in predicting recurrence and mortality related to surgical treatment. Recent findings (from the last 3 years) in each of these areas, as well as recent controversies, are reviewed.Expert commentary: The clinical importance of prognostic and predictive factors for panNENs is markedly increased for both overall outcome and post resection, as a result of recent advances in all aspects of the diagnosis, management and treatment of panNENs. Despite the proven prognostic utility of routinely used tumor grading/classification and staging systems, further studies are required to establish these novel prognostic factors to support their routine clinical use.
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Affiliation(s)
- Lingaku Lee
- Digestive Diseases Branch, NIDDK, NIH, Bethesda, MD, USA.,Department of Hepato-Biliary-Pancreatology, National Kyushu Cancer Center, Fukuoka, Japan
| | - Tetsuhide Ito
- Neuroendocrine Tumor Centre, Fukuoka Sanno Hospital, International University of Health and Welfare, Fukuoka, Japan
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