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Updated Nodes Classification
Confined to Vulva/Perineum
IA (≤2cm, ≤1mm invasion) | IB (>2cm or >1mm invasion)
Adjacent Tissue Extension
Lower 1/3 Urethra, Vagina, or Anus (Nodes Negative)
Positive Regional Nodes
IIIA (1 node ≥5mm or 1–2 nodes <5mm) | IIIB (2+ nodes ≥5mm) | IIIC (Extracapsular spread)
Upper Tract / Distant
IVA (Upper 2/3 Urethra/Vagina, Bladder/Rectum mucosa) | IVB (Distant Metastasis)
The 2021 update refined the Prognostic Node groups (Stage III) based on absolute node size and extracapsular spread.
Verified
Last Review: 2026
Last Comprehensive Review: 2026