Schmassmann A
Abteilung für Gastroenterologie, Departement Medizin, Inselspital, Universität Bern.
Ther Umsch. 1997 Jan;54(1):31-6.
In addition to the endoscopic assessment of the mucosa, endoscopic ultrasonography allows the characterization of the gastrointestinal tract wall and the neighbouring structures. Due to the high ultrasonic frequencies employed, endoscopic images have a high resolution. Malignant tumours of the esophagus, stomach, periampullary region, and rectum are usually investigated both by computer tomography and endoscopic ultrasonography. The local T-N tumour stage is predominantly assessed by endoscopic ultrasonography. In contrast, the M stage is assessed predominantly by computed tomography. The local T-N stage, which ist decisive for the local tumour resectability, can only be assessed with sufficient accuracy by endoscopic ultrasonography.
除了对黏膜进行内镜评估外，内镜超声检查还能对胃肠道壁及其邻近结构进行特征描述。由于采用了高频超声，内镜图像具有高分辨率。食管、胃、壶腹周围区域和直肠的恶性肿瘤通常通过计算机断层扫描和内镜超声检查进行评估。局部T-N肿瘤分期主要通过内镜超声检查来评估。相比之下，M分期主要通过计算机断层扫描来评估。对于局部肿瘤可切除性起决定性作用的局部T-N分期，只有通过内镜超声检查才能得到足够准确的评估。
