3D echoendoscopy and miniprobes for rectal cancer staging.
Rev Esp Enferm Dig
; 110(5): 306-310, 2018 May.
Article
em En
| MEDLINE
| ID: mdl-29320861
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 ANDMETHODS:
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.
Texto completo:
1
Bases de dados:
MEDLINE
Assunto principal:
Neoplasias Retais
/
Cuidados Pré-Operatórios
/
Endossonografia
/
Imageamento Tridimensional
Tipo de estudo:
Diagnostic_studies
/
Observational_studies
Limite:
Adult
/
Aged
/
Aged80
/
Female
/
Humans
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Male
/
Middle aged
Idioma:
En
Revista:
Rev Esp Enferm Dig
Assunto da revista:
GASTROENTEROLOGIA
Ano de publicação:
2018
Tipo de documento:
Article
País de afiliação:
Portugal