Tumor Staging

Tumor Staging

Benign:

Stage 1 (latent) – benign histology, intracapsular without metastases
Stage 2 (active) – benign histology, extracapsular, intracompartmental without metastases
Stage 3 (aggressive) – benign histology, extracapsular, extracompartmental, +/- mestastases

Malignant:

Stage I – low grade, no mets
A. intracompartmental
B. extracompartmental
Stage 2 – high grade, no mets
A. intracompartmental
B. extracompartmental
Stage 3 – low/high grade with mets
A. intracompartmental
B. extracompartmental
– compartments – bounded by fascial structures or bone which act as barriers towards the spread of actively growing lesions
– tumors that involve major neurovascular bundles = extracompartmental

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