Comparison between CT and Histopathological Findings of Cervical Lymph Node Metastases in the Oral Squamous Cell Carcinoma
| Autor: | Akemi Uchida |
|---|---|
| Rok vydání: | 2001 |
| Předmět: | |
| Zdroj: | The Journal of the Kyushu Dental Society. 55:165-178 |
| ISSN: | 1880-8719 0368-6833 |
| DOI: | 10.2504/kds.55.165 |
| Popis: | The purpose of this study is to clarify the relationship between the findings of contrast-enhanced CT scans and the histopathological findings of regional lymph nodes obtained from a complete extirpation of oral squamous cell carcinoma. Twenty-seven pairs of contrast-enhanced CT scans and histopathological specimens of 27 oral squamous cell carcinoma used in this study were obtained at Kyushu Dental College Hospital between 1987 and 1999. The primary site of the 27 tumor consists of the tongue (13 cases), the mandibular gingiva (6 cases), the maxillary gingiva (4 cases), the floor of the oral cavity (3 cases), and the buccal mucosa (1 case).The results obtained were as follows :1. Of the 27 cases, 11 (41 %) were proven to be positive lymph nodes metastatic cases histopathologically. Metastatic lymph nodes were predominantly detected in both the submandibular regions and the superior internal jugular chains (95 %).2. The length and the ratio of the short and long axes of the metastatic lymph nodes were larger than those of the non-metastatic lymph nodes.3. Many of the metastatic lymph nodes revealed a low density in their central area and were also accompanied by a thin ring enhancement. Non-metastatic lymph nodes, affected by inflammation, often revealed a heterogeneous density.4. The ring enhancement was predominantly seen in the metastatic lymph nodes (45 %), which were filled with a well-differentiated tumor cell. In the metastatic lymph nodes, which were filled with moderately-differentiated tumor cells, were seen heterogeneous density, but a ring enhancement was not seen.5. In the metastatic lymph nodes, it was difficult to decide the metastatis by contrast CT scan, if the tumor extension degree was not predominant.6. The ring enhancement was caused by the dilatation of the capsular vessels, but not by the extra capsular spread of the tumor cells. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|