Clinical group | Extent of disease/surgical result |
I | A Localized tumor, confined to site of origin, completely resected |
B Localized tumor, infiltrating beyond site of origin, completely resected | |
II | A Localized tumor, gross total resection, but with microscopic residual disease |
B Locally extensive tumor (spread to regional lymph nodes), completely resected | |
C Locally extensive tumor (spread to regional lymph nodes), gross total resection, but microscopic residual disease | |
III | A Localized or locally extensive tumor, gross residual disease after biopsy only |
B Localized or locally extensive tumor, gross residual disease after major resection (≥50 percent debulking) | |
IV* | Any size primary tumor, with or without regional lymph node involvement, with distant metastases, irrespective of surgical approach to primary tumor |
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