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*Classification according to the American Joint Committee on Cancer 7th edition. †Lamina propria, muscularis mucosae, or submucosa. ‡Muscularis propria. §Penetrates subserosal connective tissue without invasion of visceral peritoneum or adjacent structures. ∥Serosa (visceral peritoneum) or adjacent structures. ¶Statistically significant (P<0.05).
