Table 1.
Comparison of Cellularity in Cell Blocks Prepared From Ex Vivo Samples By 3 Methods
| Characteristic | HistoGel | EtOH | HistoGel + EtOH |
|---|---|---|---|
| Individual comparisonsa | |||
| FNA1 (liver; metastatic CRC ) | 1 (almost acellular) | 1 (almost acellular) | 1 (almost acellular) |
| FNA2 (liver; metastatic CRC2) | 50 | 1 (almost acellular) | 1000 |
| FNA3 (lung; lung adenocarcinoma) | 10 | 1 | 20 |
| FNA4 (lymph node; reactive lymph node) | 3 | 1 | 15 |
| Scraping 1 (liver; metastatic CRC ) | 10 | 1 | 50 |
| Scraping 2 (liver; metastatic CRC2) | 1 | 1 | 1.5 |
| Scraping 3 (lung; lung adenocarcinoma) | 1 | 2 | 2 |
| Scraping 4 (lymph node; reactive lymph node) | 1 | 5 | 10 |
| Fold differences | |||
| HistoGel + EtOH versus HistoGel alone, mean (range); median | 8.3 (1–20); 3.5 | ||
| HistoGel + EtOH versus EtOH alone, mean (range); median | 136 (1–1000); 8.5 | ||
Abbreviations: CRC, colorectal carcinoma; EtOH, ethanol; FNA, fine-needle aspiration.
a
Shown are the fold differences in total cell numbers in a single hematoxylin-eosin-stained section, with cellularity in the least cellular cell block counted as 1.