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Stage II includes: T2, N0, M0. T2: Tumor measuring more than 2 cm, but not more than 4 cm in greatest dimension without extraparenchymal extension. Extraparenchymal extension is clinical or macroscopic evidence of invasion of soft tissues. Microscopic evidence alone does not constitute extraparenchymal extension for classification purposes. N0: No regional lymph node metastasis. M0: No distant metastasis. (AJCC 7th ed.)
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