Preoperative Evaluation of Submucosal Invasive Colorectal Cancer Using a 15-MHz Ultrasound Miniprobe

Abstract

The miniprobe can be useful for therapeutic decision-making in submucosal invasive colorectal cancer.

Impact of miniprobe ultrasonography on planning of minimally invasive surgery for gastric and colonic tumors

“…Unintentional EMR in deeply invading lesions may expose patients unneccessarily to the risk of bleeding and perforation. In these cases, miniprobe EUS can help to reassure the endoscopist that it is safe to perform EMR or, alternatively, prompt the consideration of surgery [6]. In the present study, the laparoscopic approach was favored for high-risk T1 or T2 tumors, whereas radical resection via laparotomy was considered appropriate for more advanced tumors.…”

Echoendoscopic characterization of the human colon

“…Some works refer the colon wall division into 5 layers by the 12 MHz (10) or 15 MHz frequencies (11), as well as the division into 9 layers by the 20 MHz frequencies (12). However, contrarily to ours, these have different objectives, not comparing different frequencies in the same segments and providing no other information besides the reference to the number of layers identified by a determined frequency.…”

The value of endosonographic rectal carcinoma staging in routine diagnostics: a 10-year analysis

“…It can be improved by the use of a high-frequency ultrasound scanner and special examination techniques (e.g., filling the rectum with fluid to preserve compression artifacts). Harada et al [9] evaluated the degree of submucosal invasion in colorectal cancer by using a 15-MHz ultrasound miniprobe. Although the accuracy of the miniprobe in categorizing submucosal invasion into three subclasses (invasion limited to the upper third, invasion limited to the middle third, invasion limited to the lower third) was low, the accuracy for identifying invasion limited to the mucosa or upper third of the submucosa was 85.7%.…”