Table 2.
Enneking staging for malignant musculoskeletal tumors based on surgical grade, local extent, and presence or absence of metastasis
| Stage | Grade | Site | Metastasis |
|---|---|---|---|
| IA | Low (G1) | Intracompartmental (T1) | No metastasis (M0) |
| IB | Low (G1) | Extracompartmental (T2) | No metastasis (M0) |
| IIA | High (G2) | Intracompartmental (T1) | No metastasis (M0) |
| IIB | High (G2) | Extracompartmental (T2) | No metastasis (M0) |
| III | Any (G) | Any (T) | Regional or distant metastasis (M1) |
(Adapted and published with permission of Lippincott Williams & Wilkins from Enneking WF, Spanier SS, Goodman MA. A system for the surgical staging of musculoskeletal sarcoma. Clin Orthop Relat Res. 1980;153:106–120.)