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Lauren Histologic Type Is the Most Important Factor Associated With Pattern of Recurrence Following Resection of Gastric Adenocarcinoma.
Annals of Surgery 2018 January
OBJECTIVE: To examine sites of initial recurrence in patients after resection of gastric and gastroesophageal junction Siewert II/III adenocarcinoma (GA).
BACKGROUND: There are few recent studies on recurrence for Western patients following potentially curative resection of GA.
METHODS: A review of a prospectively maintained, single institution database was performed. Clinicopathologic factors, site(s) of initial recurrence, disease-free survival, and overall survival were examined.
RESULTS: From January 2000 to June 2010, 957 patients underwent potentially curative resection for GA, 435 patients (46%) had recurrent disease, and complete data on recurrence site(s) could be obtained in 386 patients. Tumors were Lauren intestinal type in 206 (53%) and diffuse or mixed-type in 180 (47%). Median time to recurrence was 12 months and 75% of recurrences occurred within 2 years. There was a significant difference in pattern of initial recurrence between the intestinal and diffuse/mixed cohorts (P < 0.001). For intestinal tumors, distant metastasis was the most common site (54%), followed by locoregional (20%), peritoneal (15%), and multifocal (11%). For diffuse/mixed tumors, peritoneal recurrence was the most common (37%), followed by distant (32%), locoregional (22%), and multifocal (9%). On multivariate analysis, Lauren histologic type was the only significant factor that was associated with both peritoneal recurrence (diffuse, hazard ratio 2.22, confidence interval 1.38-3.94) and distant recurrence (intestinal, hazard ratio 1.888, confidence interval 1.202-2.966). After recurrence, median overall survival was only 8.4 months.
CONCLUSIONS: In GA patients who recur after resection, patterns of recurrence vary significantly based on Lauren histologic type.
BACKGROUND: There are few recent studies on recurrence for Western patients following potentially curative resection of GA.
METHODS: A review of a prospectively maintained, single institution database was performed. Clinicopathologic factors, site(s) of initial recurrence, disease-free survival, and overall survival were examined.
RESULTS: From January 2000 to June 2010, 957 patients underwent potentially curative resection for GA, 435 patients (46%) had recurrent disease, and complete data on recurrence site(s) could be obtained in 386 patients. Tumors were Lauren intestinal type in 206 (53%) and diffuse or mixed-type in 180 (47%). Median time to recurrence was 12 months and 75% of recurrences occurred within 2 years. There was a significant difference in pattern of initial recurrence between the intestinal and diffuse/mixed cohorts (P < 0.001). For intestinal tumors, distant metastasis was the most common site (54%), followed by locoregional (20%), peritoneal (15%), and multifocal (11%). For diffuse/mixed tumors, peritoneal recurrence was the most common (37%), followed by distant (32%), locoregional (22%), and multifocal (9%). On multivariate analysis, Lauren histologic type was the only significant factor that was associated with both peritoneal recurrence (diffuse, hazard ratio 2.22, confidence interval 1.38-3.94) and distant recurrence (intestinal, hazard ratio 1.888, confidence interval 1.202-2.966). After recurrence, median overall survival was only 8.4 months.
CONCLUSIONS: In GA patients who recur after resection, patterns of recurrence vary significantly based on Lauren histologic type.
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