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DOI: 10.1055/s-2001-12798
Preoperative Evaluation of Submucosal Invasive Colorectal Cancer Using a 15-MHz Ultrasound Miniprobe
Publication History
Publication Date:
31 December 2001 (online)
![](https://www.thieme-connect.de/media/endoscopy/200103/lookinside/thumbnails/10.1055-s-2001-12798-1.jpg)
Background and Study Aims: Recently, it was reported that focal submucosal invasive colorectal cancer could be treated by polypectomy or endoscopic mucosal resection (EMR) because of the rarity of lymph-node metastasis. Our objective was to examine the accuracy and efficacy of a 15-MHz ultrasound miniprobe in the preoperative evaluation of the degree of submucosal invasion in colorectal cancer.
Patients and Methods: A total of 35 patients with submucosal invasive colorectal cancer who underwent ultrasonography with a miniprobe were studied prospectively. The results of this imaging were compared with the histologic findings in resected specimens.
Results: Although the accuracy of the miniprobe in categorizing submucosal invasion into three subclasses (SM1, invasion limited to the upper third; SM2, limited to the middle third; SM3, limited to the lower third) was low (37.1 %; 13/35), the accuracy in differentiation between ≤ SM1 (M and SM1) and ≥ SM2 (SM2, SM3, MP, and S) was 85.7 % (30/35).
Conclusions: The miniprobe can be useful for therapeutic decision-making in submucosal invasive colorectal cancer.
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N. Harada,M.D.
Dept. of Medicine and Bioregulatory Science
Graduate School of Medical Sciences
Kyushu University
Fukuoka 812-8582, Japan
Fax: Fax:+ 81-92-642-5287
Email: E-mail:zico@intmed3.med.kyushu-u.ac.jp