Endoscopic Ultrasound with Conventional Probe and Miniprobe in Preoperative Staging of Esophageal Cancer

Abstract

The miniprobe allows adequate EUS staging of stenotic esophageal tumors precluding the passage of a conventional probe. Therefore, dilatation therapy of stenotic cancers to conduct conventional EUS should be avoided.

Preoperative Diagnosis of Congenital Esophageal Stenosis Caused by Tracheobronchial Remnants Using Miniprobe Endoscopic Ultrasonography in a Child

“…Conventional EUS is not easily performed in young children because of the size of the 12~13 mm endoscopic probe. Furthermore, a stenotic area such as CES and stricture lesions prohibits the passage of a conventional probe [7]. EUS using a miniprobe was performed by inserting the working channel of a flexible conventional EGD [7].…”

“…Furthermore, a stenotic area such as CES and stricture lesions prohibits the passage of a conventional probe [7]. EUS using a miniprobe was performed by inserting the working channel of a flexible conventional EGD [7]. Recently, a case was reported in which a EUS examination was performed by inserting the miniprobe into the working channel of a slim (4.9 mm) endoscope to evaluate an esophageal stenotic area [16].…”

“…Recently, a case was reported in which a EUS examination was performed by inserting the miniprobe into the working channel of a slim (4.9 mm) endoscope to evaluate an esophageal stenotic area [16]. The EUS miniprobe has a much smaller diameter and a higher frequency compared with conventional EUS [7]. Therefore, the EUS miniprobe is limited and might be useless in cases requiring a full image such as large tumors or abnormal lesions in deep layers [7].…”

“…The EUS miniprobe has a much smaller diameter and a higher frequency compared with conventional EUS [7]. Therefore, the EUS miniprobe is limited and might be useless in cases requiring a full image such as large tumors or abnormal lesions in deep layers [7]. Attila et al [15] performed EUS in 38 children with a mean age of 13.5 years.…”

“…Conventional radial EUS is limited for use in children or stenotic lesions of the gut because of its large diameter. However, EUS using a mini-catheter probe inserted via the working channel of the endoscopy is a safe and useful tool for evaluating high-grade stenotic lesions [7] and allows for the acquisition of abnormal lesions of gut wall layers even in small children. Usui et al [6] reported an experience of applying high-frequency catheter miniprobe EUS to distinguish between FMH and TBRs in children with CES in whom symptoms had not improved by balloon dilatation.…”