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Tumor-node-metastasis staging system qualifiers
| Stage | Definition | |
| Tumor | Tx | Extension of lymphoma not established |
| T0 | No evidence of primary lymphoma | |
| Nodes | Nx | Nodal involvement not evaluated |
| N0 | No evidence of nodal involvement | |
| Metastasis | Mx | Dissemination of lymphoma not evaluated |
| M0 | No evidence of lymphoma dissemination | |
| Bone marrow | Bx | Bone marrow infiltration not evaluated |
| B0 | No evidence of bone marrow infiltration |
