Endosonography of upper gastrointestinal tract cancer on demand using miniprobes or endoscopic ultrasound

Abstract

Endosonography on demand using either miniprobes or conventional endoscopic ultrasound may result in more effective and less invasive staging of esophageal and gastric cancer. Selective use of high-resolution miniprobes and conventional endoscopic ultrasound offers accurate staging of all tumor stages.

Impact of endoscopic ultrasonography (EUS) on surgical decision-making in upper gastrointestinal tract cancer: An international multicenter study

“…In addition, incomplete EUS examination because of tumor stenosis in both GE and esophageal cancers may have reduced the potential impact of EUS in these patients. Miniprobes were not used in these patients but would have provided a more complete staging evaluation [3].…”

High-resolution endoscopy and endoscopic ultrasound for evaluation of early neoplasia in Barrett’s esophagus

“…In addition, when this method is combined with conventional EUS, regional lymph nodes can be assessed and sampled if present. The reported accuracy of high-frequency probe EUS for depth of invasion, however, varies from 73.5% to 81% [6,7], and it may overstage early lesions [8]. Furthermore, the accuracy of EUS staging is limited by operator experience, location of the neoplasia (less accuracy at the gastroesophageal junction), and morphology of the lesion (flat vs. elevated vs. depressed lesion) [9].…”

Is endoscopic ultrasonography indispensable in patients with early gastric cancer prior to endoscopic resection?

“…Endoscopic ultrasonography (EUS) using the miniature sonoprobe (miniprobe) is introduced through the working channel of the conventional endoscope and allows a more precise assessment of depth of tumor invasion (T staging) than conventional EUS [4,5], especially with small and superficial tumors. Therefore, if available, the miniprobe has been used for T staging of EGC before endoscopic resection in routine clinical conditions.…”