| The results of histologic, immunohistochemical, ultrastructural, and EBV in situ hybridization studies are presented. |
| Thorough sampling will make it easier to establish a correlation between endoscopic appearances and histologic changes. |
| In three patients additional infiltration of neutrophilic leukocytes was present, suggesting histologic evidence of infection. |
| The histologic causes of these false-positive lymph nodes were granuloma, reactive inflammation, and anthracosis. |
| Staining was quantitated and correlated with histologic subtype and mitotic index. |
| These tumors are known to possess very different histologic, ultrastructural, histochemical, and immunohistochemical features. |
