Pretreatment staging of endoscopically early gastric cancer with a 15 MHz ultrasound catheter probe

被引:117
|
作者
Akahoshi, K
Chijiiwa, Y
Hamada, S
Sasaki, I
Nawata, H
Kabemura, T
Yasuda, D
Okabe, H
机构
[1] Kyushu Univ, Fac Med, Dept Internal Med 3, Fukuoka 812, Japan
[2] Kyushu Univ, Fac Med, Dept Pathol 2, Fukuoka 812, Japan
关键词
D O I
10.1016/S0016-5107(98)70087-2
中图分类号
R57 [消化系及腹部疾病];
学科分类号
摘要
Background: The usefulness of and problems associated with an ultrasound catheter probe in the pretreatment staging of endoscopically early gastric cancer remain unexplored. Methods: Endoscopic: ultrasonography using a 15 MHz catheter probe of 2.6 mm diameter was performed in a prospective study to determine the pretherapy staging of endoscopically early gastric cancer in 78 patients. The results of the ultrasound images were compared with the histologic findings of the specimens obtained by endoscopic mucosal resection or surgical resection. Results: The accuracy of the catheter probe for depth of invasion of endoscopically early gastric cancers was 67% (52 of 78 patients). The accuracy in determining depth of invasion in relation to endoscopic type was significantly higher for the elevated type (91%) than for the depressed type of early cancer (56%) (p < 0.01). The staging accuracy classified by histologic type was significantly higher for differentiated (86%) than for undifferentiated (18%) cancer (p < 0.01). Staging accuracy decreased as tumor size increased. The accuracy, sensitivity, and specificity for nodal staging were 80%, 17%, and 90%, respectively. Conclusions: A 15 MHz ultrasound catheter probe is most useful for determining depth of invasion when the tumor is histologically differentiated and endoscopically of the small elevated type early gastric cancer, but it is unreliable in the diagnosis of metastatic lymph nodes.
引用
收藏
页码:470 / 476
页数:7
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