Collaborative Stage Data Collection System

AJCC 7 provides different stage groupings by histology for esophagus and GE junction, but the same T, N, and M definitions are used for both squamous cell carcinoma and adenocarcinoma and separate histology-based schemas are not required. ... The ICD-O-3 codes for stomach, C16.1 and C16.2, for the histologies shown in the table, require that ... ................
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