Sarcoma Staging

AJC Staging System for STS

Histologic Grade

  • G1 – low, well differentiated
  • G2 – intermediate, mod. well differentiated
  • G3 – high, poorly differentiated

Primary Tumor

  • T1 – tumor >5 cm
    • T1a superficial
    • T1b deep
  • T2 – tumor ≥5 cm
    • T2a superficail
    • T2b deep

Deep

  • Lesion is deep to, or involves, the superficial fascia
  • All lesions in the
    • inraperitoneal visceral lesions
    • retroperitoneal lesions
    • intrathoracic lesions
    • majority of head and neck tumors

Metastasis

  • N0 – No nodes
  • N1 – Positive nodes
  • M0 – No distant mets
  • M1 – Distant mets

Stage Grouping

Stage T-stage tumor Grade Metastasis 5-OS
I any T Low no N1 or M1 90%
II not T2b High no N1 or M1 81%
III T2b High no N1 or M1 56%
IV anyT anyG N1 or M1
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