Clin Endosc.  2020 Jan;53(1):60-64. 10.5946/ce.2019.081.

Utility of Forward-View Echoendoscopy for Transcolonic Fine-Needle Aspiration of Extracolonic Lesions: An Institutional Experience

Affiliations
  • 1Department of Gastroenterology, Aichi Cancer Center Hospital, Nagoya, Japan
  • 2Department of Internal Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand

Abstract

Background/Aims
Non-invasive tissue sampling from the lower intra-abdominal and pelvic cavity is challenging. The role of endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) in this situation is not well-established because of the limitations of the curved linear-array echoendoscopy-EUS for colonic insertion. The aim of this study was to report our institutional experience of transcolonic EUS-FNA using forward-viewing therapeutic linear echoendoscopy-EUS (FV-EUS) in combination with fluoroscopic guidance.
Methods
Medical records of 13 patients who underwent transcolonic EUS-FNA of extracolonic lesions using FV-EUS in combination with fluoroscopic guidance at Aichi Cancer Center Hospital, Nagoya, Japan from June 2015 to November 2018 were retrospectively reviewed.
Results
Using FV-EUS under fluoroscopic guidance, the FNA procedure could be performed successfully in all patients (100% technical success), with a median procedure time of 31 minutes. The sensitivity, specificity, and accuracy of EUS-FNA for detecting malignant lesions in this study were 91%, 100%, and 92%, respectively. There were no adverse events associated with the EUS-FNA procedure.
Conclusions
FV-EUS in combination with fluoroscopic guidance is an easy, safe, and effective technique for FNA of extracolonic lesions in the lower abdomen.

Keyword

EUS-FNA; Forward-viewing echoendoscope; Non-invasive tissue sampling; Transcolonic fine-needle aspiration; Recurrent colorectal cancer
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