scholarly journals Mixed adenoneuroendocrine carcinomas of stomach and ampulla of vater after curative-intent resection: a single center cases series

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Sishu Yang ◽  
Jiong Lu ◽  
Yulong Cai ◽  
Bei Li ◽  
Xianze Xiong
Keyword(s):  
Overall Survival ◽  
Survival Data ◽  
Median Overall Survival ◽  
Survival Rates ◽  
Ampulla Of Vater ◽  
Curative Intent ◽  
Mixed Adenoneuroendocrine Carcinoma ◽  
Lymph Nodes Metastasis ◽  
Node Metastasis ◽  
Adenocarcinoma Component

Abstract Background Mixed adenoneuroendocrine carcinoma is a rare clinical manifestation, especially in the gastric and ampullary. The purpose of this study was to investigate the clinicopathological features and prognosis of mixed adenoneuroendocrine carcinoma in the gastric and ampullary and summarize related treatment suggestions. Methods In all, 32 cases of mixed adenoneuroendocrine carcinoma in the gastric and ampullary that were diagnosed from resected specimens were analyzed from 2009 to 2015. The corresponding demographic, clinicopathological and survival data were retrospectively reviewed. Results The 1-year, 3-year and 5-year survival rates were 78.1%, 28.1 and 9.4%, respectively, and the median overall survival was 28.0 months. In all, 75.0% (24/32) had lymph node metastasis at the time of initial diagnosis. A multivariate analysis revealed that TNM stage (HR 6.444 95%CI 1.477–28.121 P = 0.013), lymph nodes metastasis (HR10.617 95%CI 1.409–79.997 P = 0.022), vascular invasion (HR 5.855 95%CI 1.719–19.940 P = 0.005), grade of the adenocarcinoma component (HR 3.876 95%CI 1.451–10.357 P = 0.007) and CD56 positivity (HR 0.265 95%CI 0.100–0.705 P = 0.008) were independent predictors of overall survival. Conclusions Mixed adenoneuroendocrine carcinoma is an aggressive clinical entity with a poor prognosis. Taking both the neuroendocrine component and the adenocarcinoma component into consideration of optimal treatment is strongly recommended.

scholarly journals Mixed adenoneuroendocrine carcinomas of stomach and ampulla of vater after curative-intent resection: a single center cases series

2021 ◽  
Author(s):  
Sishu Yang ◽  
Jiong Lu ◽  
Yulong Cai ◽  
Bei Li ◽  
Xianze Xiong
Keyword(s):  
Overall Survival ◽  
Survival Data ◽  
Median Overall Survival ◽  
Survival Rates ◽  
Ampulla Of Vater ◽  
Curative Intent ◽  
Mixed Adenoneuroendocrine Carcinoma ◽  
Lymph Nodes Metastasis ◽  
Node Metastasis ◽  
Adenocarcinoma Component

Abstract Background Mixed adenoneuroendocrine carcinoma is a rare clinical manifestation, especially in the gastric and ampullary. The purpose of this study was to investigate the clinicopathological features and prognosis of mixed adenoneuroendocrine carcinoma in the gastric and ampullary and summarize related treatment suggestions. Methods In all, 32 cases of mixed adenoneuroendocrine carcinoma in the gastric and ampullary that were diagnosed from resected specimens were analyzed from 2009–2015. The corresponding demographic, clinicopathological and survival data were retrospectively reviewed. Results The 1-year, 3-year and 5-year survival rates were 78.1%, 28.1% and 9.4%, respectively, and the median overall survival was 28.0 months. In all, 75.0% (24/32) had lymph node metastasis at the time of initial diagnosis. A multivariate analysis revealed that TNM stage(HR6.444 95%CI 1.477–28.121 P = 0.013), lymph nodes metastasis (HR10.617 95%CI 1.409–79.997 P = 0.022), vascular invasion (HR 5.855 95%CI 1.719–19.940 P = 0.005),grade of the adenocarcinoma component (HR 3.876 95% CI 1.451–10.357 P = 0.007) and CD56 positivity (HR 0.265 95% CI 0.100-0.705 P = 0.008)were independent predictors of overall survival. Conclusions Mixed adenoneuroendocrine carcinoma is an aggressive clinical entity with a poor prognosis. Taking both the neuroendocrine component and the adenocarcinoma component into consideration of optimal treatment is strongly recommended.

Primary squamous cell carcinoma of the ampulla of Vater: management and review of the literature

2021 ◽  
Vol 14 (1) ◽  
pp. e236477
Author(s):  
Subhash Soni ◽  
Poonam Elhence ◽  
Vaibhav Kumar Varshney ◽  
Sunita Suman
Keyword(s):  
Squamous Cell Carcinoma ◽  
Cell Carcinoma ◽  
Squamous Cell ◽  
Survival Rates ◽  
Ampulla Of Vater ◽  
Metallic Stent ◽  
Biological Behaviour ◽  
Curative Intent ◽  
Term Survival ◽  
History Of

Squamous cell carcinoma (SCC) of the ampulla of Vater is a rare pathology and only few cases are reported in the literature. With limited experience of primary SCC in the ampulla of Vater, its biological behaviour, prognosis and long-term survival rates are not well known. A 38-year-old woman presented with a history of painless progressive jaundice for which self-expending metallic stent was placed 3 years back. She was evaluated and initially diagnosed as probably periampullary adenocarcinoma. She underwent pancreaticoduodenectomy and histopathology with immunohistochemistry was suggestive of SCC of ampulla of Vater. She received adjuvant chemotherapy and doing well with no recurrence after 1 year of follow-up. In conclusion, SCC of the ampulla is an unusual pathology that should be kept as a differential diagnosis for periampullary tumours. Surgical treatment with curative intent should be performed whenever feasible even in the setting of bulky tumour to improve the outcome.

Follicular large-cell lymphoma: intermediate or low grade?

1994 ◽  
Vol 12 (7) ◽  
pp. 1349-1357 ◽  
Author(s):  
N L Bartlett ◽  
M Rizeq ◽  
R F Dorfman ◽  
J Halpern ◽  
S J Horning
Keyword(s):  
Overall Survival ◽  
Prognostic Factors ◽  
Medical Center ◽  
Performance Status ◽  
Survival Rates ◽  
Large Cell ◽  
Poor Performance Status ◽  
Low Grade ◽  
Curative Intent ◽  
Overall Survival Rates

PURPOSE To evaluate the benefit of anthracycline-based chemotherapy, identify prognostic factors, and determine the value of the International Prognostic Factors Index for patients with follicular large-cell (FLC) lymphoma. PATIENTS AND METHODS This retrospective study includes 96 patients with FLC lymphoma treated at Stanford University Medical Center between 1969 and 1991. Fifty-five patients received doxorubicin plus cyclophosphamide-containing chemotherapy regimens, 21 patients received other chemotherapy regimens, 15 patients received radiotherapy only, and five patients received no initial therapy. Thirty-four patients had stage I or II disease and 62 patients had stage III or IV disease. RESULTS With a median follow-up duration of 5.2 years (range, 1 to 18), the actuarial 5- and 10-year overall survival rates were 75% and 54%, with actuarial 5- and 10-year freedom from progression (FFP) rates of 53% and 42%, respectively. Patients treated with chemotherapy regimens that contained both doxorubicin and cyclophosphamide had a superior actuarial 10-year FFP rate (55% v 25%, P = .06) and overall survival rate (65% v 42%, P = .04) compared with patients treated with other chemotherapy regimens. Only one patient treated with doxorubicin plus cyclophosphamide relapsed after 3 years. In the multivariate analysis, discordant lymphoma and treatment with chemotherapy regimens not containing both cyclophosphamide and doxorubicin predicted for worse FFP and overall survival rates. In addition, poor performance status and increasing areas of diffuse histology predicted for a worse survival, while anemia and male sex predicted for a worse FFP. The age-specific International Index was useful in predicting outcome; however, few patients with FLC lymphoma had high-risk features. CONCLUSION The plateau in FFP implies that patients with FLC lymphoma enjoy sustained remissions after standard anthracycline-based chemotherapy. FLC lymphoma should continue to be approached as an intermediate-grade lymphoma with curative intent.

Preoperative radiotherapy and docetaxel in resectable pancreatic adenocarcinoma: A phase II trial

2006 ◽  
Vol 24 (18_suppl) ◽  
pp. 4099-4099 ◽  
Author(s):  
F. Viret ◽  
M. Ychou ◽  
V. Moutardier ◽  
V. Magnin ◽  
P. Rouanet ◽  
...  
Keyword(s):  
Overall Survival ◽  
Pancreatic Adenocarcinoma ◽  
Median Overall Survival ◽  
Locally Advanced ◽  
Disease Free Survival ◽  
Pathological Response ◽  
Phase Iii ◽  
Additional Patient ◽  
Curative Intent ◽  
Grade 3

4099 Background: We previously reported results a phase I trial of weekly docetaxel concurrently with radiation therapy in patients (pts) with locally advanced pancreatic adenocarcinoma (Pancreas, Vol 27, N°3, 2003). We prospectively explored this regimen in 34 pts with biopsy proven potentially resectable pancreatic adenocarcinoma. Methods: Treatment consisted of concomitant radiotherapy (45 Gy within 5 weeks directed at the pancreatic tumor and regional lymphatics) with 5 weekly doses of docetaxel (30 mg/m2/week) by 1-hour infusion, followed by a complete staging evaluation 3–4 weeks after chemo-radiation. Pts without disease progression underwent surgery. Results: From May, 2003 to July, 2005, this study enrolled 34 pts (59% men) with median age 62 years (range 45–72). Median tumor size was 3 cm. Pretreatment Endoscopic Ultrasound (EUS) staging was uT1 (7 pts), uT2 (25 pts), uT3 (2pts), uN0 (26 pts) and uN1 (8 pts). Median pretreatment CA 19.9 levels was 114 (range 1–9432). All pts (97%) but one completed radiation and 91% (31 pts) received the 5 weekly doses of docetaxel. Adverse events included grade 3/4 asthenia (28%), grade 3/4 nausea/vomiting (10%), grade 3/4 anemia (7%) and grade 3/4 neutropenia (7%). Median time between diagnosis and surgery was 3.7 months (range 2.8–8.7). Ten pts (29%) presented progressive disease after chemo-radiation and one additional patient (pt) voluntary stopped treatment procedure. Twenty three pts (68%) underwent surgical procedure, which was with curative intent in 17 pts (50%). One pt died within the 30-day post operative period. Pathological response was observed in 7 pts (30%), including 2 complete response. The median Disease Free Survival (DFS) was 11 months and the 2-year DFS was 21%. The median overall survival (OS) was 14 months. The 2-year DFS for the 17 pts resected with a curative intent was 50.4%. In this subgroup, median overall survival was not reached. Conclusions: Pre-operative combination of radiotherapy and docetaxel is feasible with tolerable toxicity and with promising pathological response. A randomized phase III study comparing this regimen (radiotherapy and docetaxel) and surgery versus surgery alone is starting. Supported in part by Sanofi Aventis, France. No significant financial relationships to disclose.

Patterns of recurrence after resection of intrahepatic cholangiocarcinoma: Results from a multi-institutional cohort of 449 patients.

2012 ◽  
Vol 30 (4_suppl) ◽  
pp. 267-267
Author(s):  
Ioannis Hatzaras ◽  
Michael A. Choti ◽  
Richard D. Schulick ◽  
Sorin Alexandrescu ◽  
Carlo Pulitano ◽  
...  
Keyword(s):  
Overall Survival ◽  
Survival Data ◽  
Tumor Size ◽  
Surgical Margin ◽  
Liver Parenchyma ◽  
High Rate ◽  
Curative Intent ◽  
Poor Differentiation ◽  
First Recurrence ◽  
Patterns Of Recurrence

267 Background: Outcomes following surgical management of intrahepatic cholangiocarcionma (ICC) have largely focused on overall survival. Data on recurrence following surgery for ICC are limited. We sought to investigate rates and patterns of recurrence in patients following curative intent surgery for ICC. Methods: 449 patients who underwent surgery for ICC between 1973 and 2010 were identified from an international multi-institutional database. Clinicopathologic data, recurrence patterns, and recurrence-free survival (RFS) were analyzed. Results: Most patients had a solitary tumor (70%) with a median tumor size of 6.5 cm. The majority of lesions did not have vascular invasion (69%). Surgical treatment was < hemi-hepatectomy (47%), hemi-hepatectomy (26%), or extended hepatectomy (27%). On pathology, 23% patients had lymph node metastasis and 18% had a microscopically positive (R1) margin. A subset of patients received adjuvant chemotherapy (32%) or chemoradiation (39%). While 5-year overall survival was 31%, 351 (78%) patients recurred with a median RFS time of 13.2 months. First recurrence site was intra-hepatic only (54%), extra-hepatic only (24%), intra- and extra-hepatic (22%). There was no difference in RFS based on site of recurrence (intra-hepatic: 11.2 months; extra-hepatic 11.6 months; intra- and extra-hepatic: 9.6 months; P=0.16). An R1 surgical margin (HR: 1.56, p=0.02) and neural invasion (HR: 1.55, p=0.02) were associated with overall recurrence, while male gender (HR: 1.70, p=0.011), >50% liver parenchyma resection HR: 1.97, p=0.03), primary tumor size (1.05, p=.02), and poor differentiation (HR: 1.92, p=0.01, were associated with intrahepatic recurrence. Receipt of adjuvant therapy was not associated with risk of recurrence (P>0.05). Conclusions: Over 75% of patients developed recurrence following curative intent surgery for ICC. The pattern of failure was distributed relatively equally with half of patients recurring with liver only disease while half had an extrahepatic metastatic site of recurrence. Future efforts need to be directed toward identifying more effective adjuvant regimens given the high rate of recurrence.

scholarly journals Impact of New Chemotherapy Regimens on the Treatment Landscape and Survival of Locally Advanced and Metastatic Pancreatic Cancer Patients

2020 ◽  
Vol 9 (3) ◽  
pp. 648 ◽  
Author(s):  
Markus Kieler ◽  
Matthias Unseld ◽  
Daniela Bianconi ◽  
Martin Schindl ◽  
Gabriela V. Kornek ◽  
...  
Keyword(s):  
Pancreatic Cancer ◽  
Overall Survival ◽  
Median Overall Survival ◽  
Systemic Treatment ◽  
Locally Advanced ◽  
Survival Rates ◽  
Cox Proportional Hazards Model ◽  
Metastatic Pancreatic Cancer ◽  
Line Treatment ◽  
First Line

Background: New chemotherapy regimens for the treatment of metastatic pancreatic cancer have changed the therapy paradigm. We aimed to assess their impact on the treatment landscape and clinical outcome at our academic institution. Methods: In this single institutional posthoc registry analysis, we assessed characteristics and survival rates from all patients with locally advanced and metastatic pancreatic cancer who started a systemic treatment between 01/2011 and 12/2017. Survival analyses were performed by Kaplan-Meier and Cox proportional hazards model. Results: A total of 301 patients started a systemic treatment in the observation period. In the first line treatment, we observed a shift from the four different main regimens (gemcitabine/nab-paclitaxel, modified FOLFIRINOX, gemcitabine/oxaliplatin +/− erlotinib or gemcitabine alone) to gemcitabine/nab-paclitaxel and modified FOLFIRINOX that add up to more than 80% of administered first line treatments in each of the time cohorts (2011–2013 vs. 2014–2017). The rate for first line modified FOLFIRINOX treatment was balanced between the two groups (19% and 15%). Median overall survival differed significantly between the two time cohorts (8.89 versus 11.9 months, p = 0.035). Survival rates for different first to second line treatment sequences (modified FOLFIRINOX to gemcitabine/nab-paclitaxel, gemcitabine/nab-paclitaxel to fluoropyrimidines plus nanoliposomal irinotecan, or gemcitabine/nab-paclitaxel to fluoropyrimidines plus oxaliplatin) were not significantly different and median overall survival ranged from 14.27 to 15.64 months. Conclusion: Our study provides real-world evidence for the effectiveness of the new chemotherapy regimens and underscores the importance of the choice of the front-line regimen when considering different sequencing strategies.

Survival outcomes of plasma cell leukemia (PCL) in the United States: A SEER analysis.

2013 ◽  
Vol 31 (15_suppl) ◽  
pp. 8609-8609 ◽  
Author(s):  
Hari Prasad Ravipati ◽  
Jonathan L. Kaufman ◽  
Amelia A. Langston ◽  
Lawrence Boise ◽  
Christopher Flowers ◽  
...  
Keyword(s):  
Overall Survival ◽  
Plasma Cell ◽  
Survival Data ◽  
Median Overall Survival ◽  
Current Knowledge ◽  
The United States ◽  
Plasma Cell Leukemia ◽  
Cell Transplant ◽  
Cell Leukemia ◽  
White Patients

8609 Background: Plasma cell leukemia (PCL) is an aggressive plasma cell disorder that is associated with poor outcomes. Previous studies have shown improved survival with bortezomib-based regimens in this subset of patients undergoing stem cell transplant (SCT), but this may reflect referral bias. Current knowledge evaluating outcomes of PCL is limited in the era of novel agents. Methods: We analyzed the Surveillance, Epidemiology, and End Results (SEER) database from 18 registries for survival characteristics in PCL stratified by age, sex, race and the era of diagnosis. International Classification of Diseases for Oncology 3rd edition histology code 9733 was used to identify cases. Results: From 1973 to 2009, 74826 cases of myeloma and 479 cases of PCL were recorded. Survival data was available for 397 PCL patients. The median overall survival (OS) was 6 months (95% Confidence Interval (CI): 4.8 months – 7.2 months); and 1-year, 2-year, and 4-year OS rates were 34%, 20%, and 9% compared to corresponding myeloma survival rates of 66%, 52%, and 32%, respectively. Median overall survival differences were observed for women vs. men (7 months vs. 5 months, p=0.026); black vs. white patients (7 months vs. 5 months, p=0.01); and patients aged <60 years vs. ≥ 60 years (9 months vs. 4 months; P=0.01), respectively. In addition, patients diagnosed after 2005 had superior median OS compared with patients diagnosed prior to 2005 (7 months vs. 3 months; P=0.005). Conclusions: Black patients, women and patients aged <60 years have improved OS compared to white patients, males and patients aged ≥ 60 years. The survival benefit seen in patients diagnosed after 2005 may be attributed to the benefit conferred by access to new agents, but OS remains poor. Newer treatment approaches for managing PCL are clearly needed.

Survival rates after retroperitoneal lymph node dissection (RPLND) for testicular seminoma.

2019 ◽  
Vol 37 (7_suppl) ◽  
pp. 534-534
Author(s):  
Alexandra Tabakin ◽  
Sinae Kim ◽  
Charles Polotti ◽  
Brian Shinder ◽  
Zorimar Rivera-Nunez ◽  
...  
Keyword(s):  
Overall Survival ◽  
Survival Data ◽  
Clinical Stage ◽  
Survival Rates ◽  
Retroperitoneal Lymph Node Dissection ◽  
Testicular Seminoma ◽  
Kaplan Meier ◽  
Academic Center ◽  
Overall Survival Rates

534 Background: RPLND as first-line treatment for testicular seminoma is less well defined than for testicular nonseminomas. Furthermore, RPLND performed in the post-chemotherapy (PC) setting for seminoma patients with a PET avid residual mass > 3 cm can be technically challenging. We describe utilization of RPLND in the primary and PC settings and report on overall survival rates following surgery for these men. Methods: Using 2004-2014 data from the National Cancer Database, we identified 62,727 men with 1° testicular cancer, of which 31,068 men were diagnosed as having seminoma. After excluding men with benign, non-germ cell, and nonseminoma histologies, those who did not undergo RPLND, and those whose clinical stage (CS) or survival data were unavailable, 412 men comprised our final cohort. Men were further stratified according to whether they had 1° RPLND vs PC-RPLND, with 1° RPLND defined as RPLND performed for CS IA-IIB without prior chemotherapy, and PC-RPLND classified as RPLND performed for CS IIA-IIIC after chemotherapy. Descriptive statistics were used to summarize clinical and demographic factors. The Kaplan-Meier method was used to determine overall survival. Results: From 2004-2014, 412 men with testicular seminoma underwent RPLND, of which 89% and 11% were in the 1° and PC settings, respectively. There were no significant differences in clinical or demographic characteristics when comparing men in these 2 groups. The majority of men with testicular seminoma undergoing PC-RPLND were treated at an academic center (63.8%) or comprehensive community cancer program (21.3%). The median follow-up was 4.1 years. Of 372 patients with available survival data, five-year overall survival was 94.2% and 89.0% in the 1° RPLND and PC- RPLND groups, respectively. Conclusions: Though RPLND is rarely used as 1° therapy in testicular seminoma, overall survival rates appear to be excellent, as they do for men with testicular seminoma after PC-RPLND. Ongoing trials evaluating the use of RPLND for early metastatic, low-volume disease will clarify its role in the management of testicular seminoma.

P05.04 Reradiation by reccurent gliomas with VMAT (Volumetric Modulated Arc Therapy) technique- survival benefit

2021 ◽  
Vol 23 (Supplement_2) ◽  
pp. ii23-ii24
Author(s):  
M Theodorou ◽  
I Polycarpou
Keyword(s):  
Overall Survival ◽  
Median Overall Survival ◽  
Imaging Modality ◽  
Survival Rates ◽  
Volumetric Modulated Arc Therapy ◽  
Progression Free Survival ◽  
Recurrent Glioblastoma ◽  
Recurrent Glioma ◽  
Technique Survival ◽  
Glioma Recurrence

Abstract BACKGROUND Patients who have been treated with reirradiation for recurrent glioma reported survival benefits. Limited data are available for the outcomes after fractionated re-irradiation. This study aims to investigate whether re-irradiation of recurrent glioma with 45Gy dose can increase the overall survival of patients. MATERIAL AND METHODS A retrospective analysis of 35 patients re-irradiated for high-grade glioma recurrence between 2012 and 2020 was performed. All included patients met the following criteria: a) histopathological confirmation of primary brain cancer at initial diagnosis; b) a history of initial primary radiation; c) histological and/or imaging modality confirmation of recurrence. Outcome metrics included overall survival, prognostic factors for survival, and treatment-related toxicity. RESULTS After the end of re-irradiation the median overall survival was 11 months (95% confidence interval, 7–14 months). From the patients evaluated in the current study after the end of re-irradiation the progression free survival was 6 months (3.8 - 8 months) while after the end of first radiation was 13 months (8 - 17.9 months). Our findings suggest that re-irradiation might prolong survival rates. CONCLUSION Recurrent Glioblastoma WHO IV is associated with a median overall survival of less than a year and the majority of patients have profound tumor-related symptoms.The results of this study suggest that re-irradiation may prolong the overall survival.

Inferior outcome of neuroendocrine tumor patients negative on somatostatin receptor imaging

2020 ◽  
Vol 27 (11) ◽  
pp. 615-624
Author(s):  
Julie Refardt ◽  
Wouter T Zandee ◽  
Tessa Brabander ◽  
Richard A Feelders ◽  
Gaston J H Franssen ◽  
...  
Keyword(s):  
Overall Survival ◽  
Propensity Score ◽  
Median Overall Survival ◽  
Cox Regression ◽  
Somatostatin Receptor ◽  
Somatostatin Analogs ◽  
Tumor Biology ◽  
Survival Rates ◽  
Receptor Imaging ◽  
Cox Regression Analysis

Sufficient expression of somatostatin receptor (SSTR) in well-differentiated neuroendocrine tumors (NETs) is crucial for treatment with somatostatin analogs (SSAs) and peptide receptor radionuclide therapy (PRRT) using radiolabeled SSAs. Impaired prognosis has been described for SSTR-negative NET patients; however, studies comparing matched SSTR-positive and -negative subjects who have not received PRRT are missing. This retrospective analysis of two prospectively maintained NET databases aimed to compare matched metastatic grade 1 or 2 SSTR-positive and –negative NET patients. SSTR-negativity was defined as having insufficient tumor uptake on diagnostic SSTR imaging. Patients that underwent PRRT were excluded. Seventy-seven SSTR-negative and 248 SSTR-positive grade 1–2 NET patients were included. Median overall survival rates were significantly lower for SSTR-negative compared to SSTR-positive NET patients (53 months vs 131 months; P < 0.001). To adjust for possible confounding by age, gender, grade and site of origin, 69 SSTR-negative NET patients were propensity score matched to 69 SSTR-positive NET patients. Group characteristics were similar, with the exception of SSTR-negative patients receiving more often chemotherapy and targeted treatment. The inferior survival outcome of SSTR-negative compared to SSTR-positive NET patients persisted with a median overall survival of 38 months vs 131 months (P = 0.012). This relationship upheld when correcting for the main influencing factors of having a higher grade tumor or receiving surgery in a multivariate Cox regression analysis. In conclusion, we showed that propensity score-matched SSTR-negative NET patients continue to have a worse prognosis compared to SSTR-positive NET patients despite receiving more aggressive treatment. Differences in tumor biology likely underlie this survival deficit.

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