| Theme |
Early Esophageal cancer-from the Viewpoint of its Type and the Depth of Invasion |
| Title |
The Role of EUS in Superficial Esophageal Cancer |
| Author |
Yoko Murata |
Institute of Gastroenterology, Tokyo Women's Medical College |
| Author |
Shigeru Suzuki |
Institute of Gastroenterology, Tokyo Women's Medical College |
| [ Summary ] |
EUS for esophageal superficial cancer, first, allows differentiation between cancer limited to the lamina propria and cancer invading the muscularis mucosa which is important for determining the indications for mucosal resection. Endoscopy makes this possible by delineating the muscularis mucosa. Furthermore, the accuracy reached 94%. Second, detection of small lymph nodes in the posterior mediastinum, perigastric, celiac lymph nodes is also possible. Metastatic lymph nodes are predicted by EUS findings such as nodes which are spherical in shape with a distinct border and hypoechoic internal echo. On occasion, heterogeneous echo spots are also seen internally. The accuracy of diagnosing lymph node metastasis by EUS was reported to be about 70-80%.
EUS has an important role in treatment selection. |