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Current opinion on lymphadenectomy in pancreatic cancer surgery
Theodoros E Pavlidis1, Efstathios T Pavlidis, Athanasios K Sakantamis
1Second Surgical Propedeutical Department, Medical School, Aristotle University of Thessaloniki, Hippocration Hospital, Konstantinoupoleos 49, 54642 Thessaloniki, Greece. pavlidth@otenet.gr
Background:
Adenocarcinoma of the pancreas exhibits aggressive behavior in growth, inducing an extremely poor prognosis with an overall median 5-year survival rate of only 1%-4%. Curative resection is the only potential therapeutic opportunity.
Data Sources:
A PubMed search of relevant articles published up to 2009 was performed to identify information about the value of lymphadenectomy and its extent in curative resection of pancreatic adenocarcinoma.
Results:
Despite recent advances in chemotherapy, radiotherapy or even immunotherapy, surgery still remains the major factor that affects the outcome. The initial promising performance in Japan gave conflicting results in Western countries for the extended and more radical pancreatectomy; it has failed to prove beneficial. Four prospective, randomized trials on extended versus standard lymphadenectomy during pancreatic cancer surgery have shown no improvement in long-term survival by the extended resection. The exact lymph node status, including malignant spread and the total number retrieved as well as the lymph node ratio, is the most important prognostic factor. Positive lymph nodes after pancreatectomy are present in 70%. Paraaortic lymph node spread indicates poor prognosis.
Conclusions:
Undoubtedly, a standard lymphadenectomy including >15 lymph nodes must be no longer preferred in patients with the usual head location. The extended lymphadenectomy does not have any place, unless in randomized trials. In cases with body or tail location, the radical antegrade modular pancreatosplenectomy gives promising results. Nevertheless, accurate localization and detailed examination of the resected specimen are required for better staging.
