Table 1. Comparison between multiparameter flow cytometry (MFC) and histopathology plus immunohistochemistry (IH) as regards identification of infiltration by neoplastic cells versus normal/reactive cells.
| Diagnostic category | N. of concordant samples by MFC vs. IH/Total samples | (%) |
| Non-infiltrated samples: | 17/17 | 100 |
| Reactive/inflammatory samples | 9/9 | 100 |
| Other non-infiltrated samples | 8/8 | 100 |
| Infiltrated samples: | 33/35 | 94 |
| Lymphomas: | 7/9 | 78 |
| T-cell precursor LL | 2/2 | 100 |
| B-cell precursor LL | 2/2 | 100 |
| Diffuse large B cell lymphoma | 1/1 | 100 |
| Burkitt lymphoma | 2/2 | 100 |
| Hodgkin lymphoma | 0/1 | 0 |
| Anaplastic lymphoma | 0/1 | 0 |
| Solid Tumors: | 26/26 | 100 |
| Neuroblastoma | 12/12 | 100 |
| - Gaglioneuroblastoma | 1/1 | 100 |
| Rhabdomyosarcoma | 4/4 | 100 |
| Ewing Sarcoma/PNET | 2/2 | 100 |
| Adrenal carcinoma | 1/1 | 100 |
| Nasopharyngeal carcinoma | 1/1 | 100 |
| Hemagiopericytoma | 1/1 | 100 |
| Germ cell tumor | 3/3 | 100 |
| Wilmstumor | 2/2 | 100 |
| Total | 50/52 | 96 |
All 8 samples were obtained from pediatric cancer patients, but they were all negative for the presence of tumor cells by conventional diagnostic approaches. LL: lymphoblastic lymphoma; PNET- primitive neuroectodermal tumor.