Tio T L, Tytgat G N, Cikot R J, Houthoff H J, Sars P R
Department of Gastroenterology-Hepatology, Academic Medical Center, Amsterdam, The Netherlands.
Radiology. 1990 May;175(2):455-61. doi: 10.1148/radiology.175.2.2183284.
Endosonography (ES) was used for the preoperative TNM (1987) staging of tumors in 43 patients with pancreatic cancer and 24 patients with ampullary carcinomas. These results were correlated with the histologic findings of resected specimens. Early-stage tumors could be distinguished from advanced stages of cancer with ES. Detailed images of ductular and parenchymal abnormalities allowed distinction between pancreatic and ampullary carcinomas based on anatomic location. The overall accuracy of ES in the assessment of tumor classification in pancreatic and ampullary carcinoma was 92% and 88%, respectively. In diagnosing regional lymph nodes in pancreatic and ampullary tumors the accuracy of ES was 74% and 54%, respectively. For diagnosing metastatic lymph nodes in pancreatic and ampullary carcinoma the accuracy of ES was 91% and 80%, respectively. The prevalence of lymph node metastases in T1 pancreatic cancers and T1 ampullary carcinomas was 40% and 0%, respectively. Discrimination between inflammation and metastases was difficult with ES. ES was not accurate in assessing distant metastases because of the limited penetration depth of ultrasound.
对43例胰腺癌患者和24例壶腹癌患者，采用内镜超声检查（ES）对肿瘤进行术前TNM（1987）分期。将这些结果与切除标本的组织学检查结果进行对比。ES可区分早期肿瘤和癌症晚期。导管和实质异常的详细图像有助于根据解剖位置区分胰腺癌和壶腹癌。ES评估胰腺癌和壶腹癌肿瘤分类的总体准确率分别为92%和88%。在诊断胰腺癌和壶腹癌区域淋巴结方面，ES的准确率分别为74%和54%。在诊断胰腺癌和壶腹癌转移性淋巴结方面，ES的准确率分别为91%和80%。T1期胰腺癌和T1期壶腹癌的淋巴结转移率分别为40%和0%。ES难以鉴别炎症和转移。由于超声穿透深度有限，ES评估远处转移不准确。
