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| Number of patients | Number of tumor fragments | Contamination | Technical problem | Total succes | |
|---|---|---|---|---|---|
| Oral cavity | 16 (28.1%) | 429 (29.6%) | 2 (0.5%) | 8 (1.9%) | 419 (97.7%) |
| Oropharynx | 24 (42.1%) | 633 (43.6%) | 4 (0.6%) | 15 (2.4%) | 614 (97.0%) |
| Hypopharynx | 7 (12.3%) | 167 (11.5%) | 23 (13.8%) | 5 (3.0%) | 139 (83.2%) |
| Larynx | 10 (17.5%) | 222 (15.3%) | 6 (2.7%) | 4 (1.8%) | 212 (95.5%) |
| Total | 57 | 1451 | 35 (2.4%) | 32 (2.2%) | 1384 (95.4%) |
