Year 2018 / Volume 110 / Number 5
Original
3D echoendoscopy and miniprobes for rectal cancer staging

306-310

DOI: 10.17235/reed.2018.4453/2016

Fernando Castro-Poças, Mário Dinis-Ribeiro, Anabela Rocha, Tarcísio Araújo, Isabel Pedroto,

Abstract
Background: rectal cancer staging using rigid probes or echoendoscopes has some limitations. The aim of the study was to compare rectal cancer preoperative staging using conventional endoluminal ultrasonography with three-dimensional endoscopic ultrasonography and miniprobes. Materials and methods: sixty patients were included and evaluated with: a) a conventional echoendoscope (7.5 and 12 MHz); b) miniprobes (12 MHz); and c) the Easy 3D Freescan software for three-dimensional endoscopic ultrasonography. The reference or gold standard was conventional endoluminal ultrasonography in all cases and pathological assessment for those without preoperative therapy. The differences in T and N staging accuracy in both longitudinal and circumferential extension were evaluated. Results: with regard to T staging, conventional endoluminal ultrasonography had an accuracy of 85% (compared to pathological analysis), and the agreement between miniprobes vs conventional endoluminal ultrasonography (kappa = 0.81) and three-dimensional endoscopic ultrasonography vs conventional endoluminal ultrasonography (k = 0.87) was significant. In addition, miniprobes had an accuracy of 82% and three-dimensional endoscopic ultrasonography had a higher accuracy (96%). With regard to N staging, conventional endoluminal ultrasonography had an accuracy of 91% with a sensitivity of 78%. However, the agreement between miniprobes and conventional endoluminal ultrasonography and three-dimensional endoscopic ultrasonography and conventional endoluminal ultrasonography (k = 0.70) was lower. Interestingly, miniprobes had a lower accuracy of 81% whereas three-dimensional endoscopic ultrasonography had an accuracy of 100% without any false negative. No false positives were observed in any of the techniques. Accuracy for T and N staging was not influenced by longitudinal or circumferential extensions of the tumor in all types of endoscopic ultrasonography analyzed. Conclusions: miniprobes and especially three-dimensional endoscopic ultrasonography may be relevant during rectal cancer staging.
Share Button
New comment
Comments
No comments for this article
Related articles

Letter

Gastric schwannoma diagnosing gastric stromal tumor

DOI: 10.17235/reed.2023.9919/2023

Letter

Mucinous cystadenoma arising from a pancreatic heterotopia

DOI: 10.17235/reed.2020.7486/2020

Letter to the Editor

Pancreatic neuroendocrine tumors

DOI: 10.17235/reed.2017.4725/2016

Citation tools
Castro-Poças F, Dinis-Ribeiro M, Rocha A, Araújo T, Pedroto I. 3D echoendoscopy and miniprobes for rectal cancer staging. 4453/2016


Download to a citation manager

Download the citation for this article by clicking on one of the following citation managers:

Metrics
This article has received 200 visits.
This article has been downloaded 163 times.

Statistics from Dimensions


Statistics from Plum Analytics

Publication history

Received: 15/05/2016

Accepted: 02/12/2017

Online First: 11/01/2018

Published: 27/04/2018

Article revision time: 554 days

Article Online First time: 606 days

Article editing time: 712 days


Share
This article has been rated by 2 readers.
Reader rating:
Valora este artículo:




Asociación Española de Ecografía Digestiva Sociedad Española de Endoscopia Digestiva Sociedad Española de Patología Digestiva
The Spanish Journal of Gastroenterology is the official organ of the Sociedad Española de Patología Digestiva, the Sociedad Española de Endoscopia Digestiva and the Asociación Española de Ecografía Digestiva
Cookie policy Privacy Policy Legal Notice © Copyright 2023 y Creative Commons. The Spanish Journal of Gastroenterology