Table 3.
Summary of discordance for each lymphoma subtype made by all hematopathologists
| Consensus diagnosis | Overall frequency (%) | Category of diagnoses a (%) | |||
|---|---|---|---|---|---|
| Concordance | Minor discordance | Major discordance | Serious discordance | ||
| Diffuse large B-cell lymphoma | 68 (58) | 93 | 4 | 3 | 0 |
| Follicular lymphoma | 7 (6) | 77 | 20 | 3 | 0 |
| MALT lymphoma | 6 (5) | 79 | 12 | 9 | 0 |
| Nodular sclerosis classical HL | 6 (5) | 81 | 19 | 0 | 0 |
| Extranodal NK/T-cell lymphoma | 5 (4) | 65 | 23 | 12 | 0 |
| Nodal marginal zone lymphoma | 3 (3) | 72 | 16 | 6 | 6 |
| Mixed cellularity classical HL | 3 (3) | 59 | 41 | 0 | 0 |
| Mantle cell lymphoma | 3 (3) | 100 | 0 | 0 | 0 |
| Peripheral T-cell lymphoma, NOS | 3 (3) | 75 | 13 | 6 | 6 |
| Angioimmunoblastic T-cell lymphoma | 2 (2) | 90 | 10 | 0 | 0 |
| Anaplastic large cell lymphoma | 2 (2) | 91 | 0 | 9 | 0 |
| T lymphoblastic lymphoma | 2 (2) | 78 | 22 | 0 | 0 |
| Lymphoplasmacytic lymphoma | 2 (2) | 18 | 55 | 27 | 0 |
| Classical HL | 1 (1) | 100 | 0 | 0 | 0 |
| Lymphocyte-rich classical HL | 1 (1) | 33 | 67 | 0 | 0 |
| Marginal zone/lymphoplasmacytic lymphomab | 1 (1) | 100 | 0 | 0 | 0 |
| Subcutaneous panniculitis-like T-cell lymphoma | 1 (1) | 100 | 0 | 0 | 0 |
| Cutaneous T-cell lymphoma, unclassified | 1 (1) | 75 | 25 | 0 | 0 |
| Average | 86 | 10 | 3.5 | 0.3 | |
aPlease see the description of each diagnostic category in Table 1.
bA CD5-/CD10-/cyclin D1- small B-cell neoplasm with plasmacytic differentiation in a bone marrow biopsy which definite subtype could not be classified.