scholarly journals Primary tumor resection and lymph node dissection improve survival in de novo metastatic pancreatic ductal adenocarcinoma: an inverse probability of treatment weighting analysis

2020 ◽  
Vol 9 (5) ◽  
pp. 3312-3323
Author(s):  
Chaorui Wu ◽  
Xiaojie Zhang ◽  
Tongbo Wang ◽  
Hong Zhou ◽  
Chunguang Guo ◽  
...  
2021 ◽  
Vol 11 ◽  
Author(s):  
Qingbo Feng ◽  
Chuang Jiang ◽  
Xuping Feng ◽  
Yan Du ◽  
Wenwei Liao ◽  
...  

BackgroundRobotic distal pancreatectomy (RDP) and laparoscopic distal pancreatectomy (LDP) are the two principal minimally invasive surgical approaches for patients with pancreatic body and tail adenocarcinoma. The use of RDP and LDP for pancreatic ductal adenocarcinoma (PDAC) remains controversial, and which one can provide a better R0 rate is not clear.MethodsA comprehensive search for studies that compared robotic versus laparoscopic distal pancreatectomy for PDAC published until July 31, 2021, was conducted. Data on perioperative outcomes and oncologic outcomes (R0-resection and lymph node dissection) were subjected to meta-analysis. PubMed, Cochrane Central Register, Web of Science, and EMBASE were searched based on a defined search strategy to identify eligible studies before July 2021.ResultsSix retrospective studies comprising 572 patients (152 and 420 patients underwent RDP and LDP) were included. The present meta-analysis showed that there were no significant differences in operative time, tumor size, and lymph node dissection between RDP and LDP group. Nevertheless, compared with the LDP group, RDP results seem to demonstrate a possibility in higher R0 resection rate (p<0.0001).ConclusionsThis systematic review and meta-analysis suggest that RDP is a technically and oncologically safe and feasible approach for selected PDAC patients. Large randomized and controlled prospective studies are needed to confirm this data.Systematic Review Registrationhttps://www.crd.york.ac.uk/PROSPERO/#recordDetails, identifier [CRD42021269353].


2014 ◽  
Vol 58 (8) ◽  
pp. 812-816 ◽  
Author(s):  
Pedro Weslley Rosario ◽  
Maria Regina Calsolari

Objective To determine whether the currently recommended therapy for papillary thyroid carcinoma (PTC) that show no classical factors indicating a poor prognosis is also effective in cases with a family history of this tumor. Subjects and methods: Forty-two patients were studied; 10 were submitted to lobectomy and 32 to total thyroidectomy, including 23 without lymph node dissection and 9 with lymph node dissection. None of the patients received radioiodine or was maintained under TSH suppression. Results No case of recurrence was detected by imaging methods and there was no increase in thyroglobulin or antithyroglobulin antibodies during follow-up (24 to 72 months). Conclusion The treatment usually recommended for patients with PTC does not need to be modified in the presence of a family history of this tumor if no factors indicating a poor prognosis are present (tumor ≤2 cm, non-aggressive histology, no extensive extrathyroid invasion or important lymph node involvement, complete tumor resection, no evidence of persistent disease after surgery).


2017 ◽  
Vol 35 (15_suppl) ◽  
pp. e21049-e21049
Author(s):  
Michael Del Rosario ◽  
Eric Anderson ◽  
Yani Lu ◽  
Stephanie Farrell ◽  
Steven C. Plaxe ◽  
...  

e21049 Background: Merkel cell carcinoma (MCC) is associated with increased sun exposure. There is an average of 348 days of sunshine per year in our geographic area. Methods: With the IRB approval, we performed a retrospective chart review of all consecutive MCC patients seen at our institution between 2006-2017. Clinico-epidemiologic data such as age, gender, race, stage, tumor size, stage at presentation, and disease course were collected. Therapy and survival were analyzed. Using the surveillance, epidemiology, and end results program (SEER), we identified 4,256 patients with MCC from the years 2006-2013. We compared our data with the SEER findings . Statistical analysis: Chi-square and Fishers’ exact tests were used to assess the significance of associations in large and small populations, respectively. Survival analyses were performed using the Cox proportional hazards. Results: We identified 40 patients with MCC (n = 40) with a median age of 77. Compared to SEER data, our population was entirely Caucasian (100% vs. 95%; p = 0.11) and male predominant (75% vs. 63%; p = 0.11). The patients in our cohort were diagnosed more often with TNM stage I (50% vs. 39%; p = 0.00003) and found to have more often a primary tumor size < 2cm (58% vs. 34%; p < 0.01). Our patients were more frequently treated with lymph node dissection (70% vs. 63%, p = 0.002) and radiation therapy (60% vs. 50%; p = 0.24). Conclusions: Compared to the general population, MCC patients treated at our institution had similar mean age at diagnosis, gender and racial distribution and radiation treatment frequency (all p-values > 0.05). However, our patient population was significantly more likely to be diagnosed at stage I disease, have a primary tumor size less than 2 cm and receive lymph node dissection. Final statistical analysis, including survival analysis, and significance are to be discussed.


2005 ◽  
Vol 153 (5) ◽  
pp. 651-659 ◽  
Author(s):  
Furio Pacini ◽  
Martin Schlumberger ◽  
Clive Harmer ◽  
Gertrud G Berg ◽  
Ohad Cohen ◽  
...  

Objective: To determine, based on published literature and expert clinical experience, current indications for the post-surgical administration of a large radioiodine activity in patients with differentiated thyroid cancer. Design and methods: A literature review was performed and was then analyzed and discussed by a panel of experts from 13 European countries. Results: There is general agreement that patients with unifocal microcarcinomas = 1 cm in diameter and no node or distant metastases have a <2% recurrence rate after surgery alone, and that post-surgical radioiodine confers recurrence and cause-specific survival benefits in patients, strongly suspected of having persistent disease or known to have tumor in the neck or distant sites. In other patients, there is limited evidence that after complete thyroidectomy and adequate lymph node dissection performed by an expert surgeon, post-surgical radioiodine provides clear benefit. When there is any uncertainty about the completeness of surgery, evidence suggests that radioiodine can reduce recurrences and possibly mortality. Conclusion: This survey confirms that post-surgical radioiodine should be used selectively. The modality is definitely indicated in patients with distant metastases, incomplete tumor resection, or complete tumor resection but high risk of recurrence and mortality. Probable indications include patients with tumors >1 cm and with suboptimal surgery (less than total thyroidectomy or no lymph node dissection), with age <16 years, or with unfavorable histology.


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