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In patients with type II tumors , the pattern of lymphatic spread was primarily directed toward the paracardial , lesser curvature , and left gastric artery nodes ; esophagectomy offered no survival benefit over extended gastrectomy in these patients .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 None