Abstract
Background
Metastatic lesion to the pancreas accounts for approximately 2% of pancreatic neoplasms. There is no prospective, randomized or case-controlled study evaluating the role of pancreatic metastasectomy.
Methods
The PubMed, EMBASE, and Cochrane Library electronic databases were searched for studies published between January 1, 2001 and December 31, 2017. Studies with five or more patients who received pancreatic metastasectomy and data from our institution (29 patients) were included. The Kaplan–Meier method was used for survival analysis.
Results
A total of 414 patients from 20 institutions who underwent pancreatic resections were included. Of the reported 31 kinds of primary neoplasms, renal-cell carcinoma (RCC) comprised the most (54.3%). At the time of diagnosis, although 40.3% patients were asymptomatic, abdominal pain (34.8%) and jaundice (20.6%) were relatively common. As for surgical type, pancreatoduodenectomy, total pancreatectomy, distal pancreatectomy, and enucleation took up 37.9%, 11.4%, 43.5%, and 7.2% respectively. The mortality and morbidity rates were 1.4% and 48.3% respectively. Patients with symptoms at the time of diagnosis had significantly shorter survival compared with asymptomatic patients (p = 0.017). Those with RCC as primary tumor had significantly longer survival compared with non-RCC patients (p < 0.001). Positive margin also predicts worse prognosis (p = 0.035).
Conclusions
Pancreatic metastasectomy is safe and associated with acceptable short- and intermediate-term results. In the conditions of RCC as the primary tumor, being asymptomatic, or negative resection margin, a better prognosis after resection can be achieved.
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Acknowledgment
This work was supported by the National Science Fund for Distinguished Young Scholars [grant number 81625016].
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Supplementary Figure 1
: Pathological diagnoses of patients. RCC renal cell carcinoma. Colorectal cancer/46: Colonic adenocarcinoma/43, Rectal cancer/3; Others: Gallbladder carcinoma/13, Breast cancer/10, Lymphoma/4, Carcinoid/4, Malignant fibrous histiocytoma/2, Medullary thyroid cancer/1, NET of the ileum/1, Hepatocellular carcinoma/1, Seminoma/1, Esophageal cancer/3, Adrenal cortical/1, Fallopian/1, Bladder cancer/2, Uterine/1, Choriocarcinoma/1, Duodenal cancer/1, Mesenteric fibromatosis/2, Hemangiopericytoma (brain)/1, Cervical cancer/1, Cholangiocarcinoma/2, Merkel cell/2, Gastrointestinal stromal tumor/2, Unknown origin/1. n = number of patients (TIFF 38 kb)
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Huang, Q., Zhou, H., Liu, C. et al. Surgical Resection for Metastatic Tumors in the Pancreas: A Single-Center Experience and Systematic Review. Ann Surg Oncol 26, 1649–1656 (2019). https://doi.org/10.1245/s10434-019-07258-2
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DOI: https://doi.org/10.1245/s10434-019-07258-2