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.
机构:
Chinese Peoples Liberat Army Gen Hosp, Dept Gen Surg, Fuxing Rd 28, Beijing 100853, Peoples R China
Chinese Peoples Liberat Army Gen Hosp, Inst Gen Surg, Fuxing Rd 28, Beijing 100853, Peoples R ChinaChinese Peoples Liberat Army Gen Hosp, Dept Gen Surg, Fuxing Rd 28, Beijing 100853, Peoples R China
Liu, Yi
Zheng, Dong
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Chinese Peoples Liberat Army Gen Hosp, Dept Nucl Med, Fuxing Rd 28, Beijing 100853, Peoples R China
Chinese Peoples Liberat Army 306 Hosp, Dept Radiol, Beijing 100101, Peoples R ChinaChinese Peoples Liberat Army Gen Hosp, Dept Gen Surg, Fuxing Rd 28, Beijing 100853, Peoples R China
Zheng, Dong
Liu, Jia-jin
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Chinese Peoples Liberat Army Gen Hosp, Dept Nucl Med, Fuxing Rd 28, Beijing 100853, Peoples R ChinaChinese Peoples Liberat Army Gen Hosp, Dept Gen Surg, Fuxing Rd 28, Beijing 100853, Peoples R China
Liu, Jia-jin
Cui, Jian-xin
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Chinese Peoples Liberat Army Gen Hosp, Dept Gen Surg, Fuxing Rd 28, Beijing 100853, Peoples R China
Chinese Peoples Liberat Army Gen Hosp, Inst Gen Surg, Fuxing Rd 28, Beijing 100853, Peoples R ChinaChinese Peoples Liberat Army Gen Hosp, Dept Gen Surg, Fuxing Rd 28, Beijing 100853, Peoples R China
Cui, Jian-xin
Xi, Hong-qing
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Chinese Peoples Liberat Army Gen Hosp, Dept Gen Surg, Fuxing Rd 28, Beijing 100853, Peoples R China
Chinese Peoples Liberat Army Gen Hosp, Inst Gen Surg, Fuxing Rd 28, Beijing 100853, Peoples R ChinaChinese Peoples Liberat Army Gen Hosp, Dept Gen Surg, Fuxing Rd 28, Beijing 100853, Peoples R China
Xi, Hong-qing
Zhang, Ke-cheng
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Chinese Peoples Liberat Army Gen Hosp, Dept Gen Surg, Fuxing Rd 28, Beijing 100853, Peoples R China
Chinese Peoples Liberat Army Gen Hosp, Inst Gen Surg, Fuxing Rd 28, Beijing 100853, Peoples R ChinaChinese Peoples Liberat Army Gen Hosp, Dept Gen Surg, Fuxing Rd 28, Beijing 100853, Peoples R China
Zhang, Ke-cheng
Huang, Xiao-hui
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Chinese Peoples Liberat Army Gen Hosp, Dept Gen Surg, Fuxing Rd 28, Beijing 100853, Peoples R China
Chinese Peoples Liberat Army Gen Hosp, Inst Gen Surg, Fuxing Rd 28, Beijing 100853, Peoples R ChinaChinese Peoples Liberat Army Gen Hosp, Dept Gen Surg, Fuxing Rd 28, Beijing 100853, Peoples R China
Huang, Xiao-hui
Wei, Bo
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Chinese Peoples Liberat Army Gen Hosp, Dept Gen Surg, Fuxing Rd 28, Beijing 100853, Peoples R China
Chinese Peoples Liberat Army Gen Hosp, Inst Gen Surg, Fuxing Rd 28, Beijing 100853, Peoples R ChinaChinese Peoples Liberat Army Gen Hosp, Dept Gen Surg, Fuxing Rd 28, Beijing 100853, Peoples R China
Wei, Bo
Wang, Xin-xin
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Chinese Peoples Liberat Army Gen Hosp, Dept Gen Surg, Fuxing Rd 28, Beijing 100853, Peoples R China
Chinese Peoples Liberat Army Gen Hosp, Inst Gen Surg, Fuxing Rd 28, Beijing 100853, Peoples R ChinaChinese Peoples Liberat Army Gen Hosp, Dept Gen Surg, Fuxing Rd 28, Beijing 100853, Peoples R China
Wang, Xin-xin
Xu, Bai-xuan
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Chinese Peoples Liberat Army Gen Hosp, Dept Nucl Med, Fuxing Rd 28, Beijing 100853, Peoples R ChinaChinese Peoples Liberat Army Gen Hosp, Dept Gen Surg, Fuxing Rd 28, Beijing 100853, Peoples R China
Xu, Bai-xuan
Li, Ke
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Chinese Peoples Liberat Army 306 Hosp, Dept Radiol, Beijing 100101, Peoples R ChinaChinese Peoples Liberat Army Gen Hosp, Dept Gen Surg, Fuxing Rd 28, Beijing 100853, Peoples R China
Li, Ke
Gao, Yun-he
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Chinese Peoples Liberat Army Gen Hosp, Dept Gen Surg, Fuxing Rd 28, Beijing 100853, Peoples R China
Chinese Peoples Liberat Army Gen Hosp, Inst Gen Surg, Fuxing Rd 28, Beijing 100853, Peoples R ChinaChinese Peoples Liberat Army Gen Hosp, Dept Gen Surg, Fuxing Rd 28, Beijing 100853, Peoples R China
Gao, Yun-he
Liang, Wen-quan
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Chinese Peoples Liberat Army Gen Hosp, Dept Gen Surg, Fuxing Rd 28, Beijing 100853, Peoples R China
Chinese Peoples Liberat Army Gen Hosp, Inst Gen Surg, Fuxing Rd 28, Beijing 100853, Peoples R ChinaChinese Peoples Liberat Army Gen Hosp, Dept Gen Surg, Fuxing Rd 28, Beijing 100853, Peoples R China
Liang, Wen-quan
Tian, Jia-he
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Chinese Peoples Liberat Army Gen Hosp, Dept Nucl Med, Fuxing Rd 28, Beijing 100853, Peoples R ChinaChinese Peoples Liberat Army Gen Hosp, Dept Gen Surg, Fuxing Rd 28, Beijing 100853, Peoples R China
Tian, Jia-he
Chen, Lin
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Chinese Peoples Liberat Army Gen Hosp, Dept Gen Surg, Fuxing Rd 28, Beijing 100853, Peoples R China
Chinese Peoples Liberat Army Gen Hosp, Inst Gen Surg, Fuxing Rd 28, Beijing 100853, Peoples R ChinaChinese Peoples Liberat Army Gen Hosp, Dept Gen Surg, Fuxing Rd 28, Beijing 100853, Peoples R China