Comparison of bone marrow (BM) involvement by flow cytometry, morphology and PCR-based clonality in the 71 cases with results from immunophenotyping of aspirates
| BM involvement | N | Flow cytometry analysis | P value* | |
|---|---|---|---|---|
| No involvement (%) | Involvement (%) | |||
| Morphology | ||||
| No involvement | 49 | 42 (85.7) | 7 (14.3) | |
| Involvement | 22 | 12 (54.5) | 10 (45.5) | 0.004 |
| PCR | ||||
| No involvement | 45 | 43 (95.6) | 2 (4.4) | |
| Involvement | 26 | 11 (42.3) | 15 (57.7) | <0.001 |
| Morphology and/or PCR | ||||
| No involvement | 39 | 38 (97.4) | 1 (2.6) | |
| Involvement | 32 | 16 (50.0) | 16 (50.0) | <0.001 |
*Pearson's χ2 or Fisher's exact test, where appropriate.