Background: Complete resection of a gastric cancer and adjacent lymph nodes offers the only chance for cure of the disease. However, disease recurrence occurs in 22-51% of cases, and its prognosis is very poor. Many clinicians perform post-operative follow-up for these patients, although there is no consensus on the regimen, frequency of visits, mode of testing, or the rationale of a follow-up program.
Purpose: The objective of this systematic review was to identify the evidence for surveillance in patients with resected gastric cancer, specifically examining the interval of follow-up and the modalities utilized.
Methods: Electronic literature searches were conducted using Medline, Embase, and the Cochrane Central Register of Controlled Trials from January 1st 1998 to December 1st 2009. All search titles and abstracts were independently rated for relevance by a minimum of two reviewers.
Results: Five articles were selected. A total of 810 patients underwent post-operative follow-up. History and physical examination, hematological and chemistry profile, endoscopy (esophagogastroduodenoscopy [EGD]), and computed tomography (CT) were the most frequently employed modalities. CT detected the majority of recurrences in the included studies. The survival post-recurrence was significantly higher in the asymptomatic group compared with symptomatic group in three studies, but this may simply reflect lead-time bias. No differences in overall survival (OS) were found.
Conclusion: The included studies failed to show an improvement in OS with more intense surveillance. Further prospective studies are required to determine whether a subgroup of patients may benefit from more intensive follow-up.