Year 2005 / Volume 97 / Number 6
Original
Usefulness of endoscopic ultrasonography in the preoperative diagnosis of submucosal digestive tumours

0

D. Martínez-Ares, J. Souto-Ruzo, J. Yáñez López and J. L. Vázquez Iglesias

Abstract
Introduction: the preoperative diagnosis of submucosal lesions in the gut may be complicated. Conventional endoscopy does not allow to clearly establishing a diagnosis, and does not adequately
assess lesion size. Furthermore, endoscopic biopsy is
usually not diagnostic. Cytology as performed by means of fineneedle puncture does not have enough sensitivity and specificity
to be considered the gold standard in the diagnosis of these lesions.
We will now assess the usefulness of endoscopic ultrasonography in the study of submucosal digestive tumors.

Materials and methods: we have prospectively collected ultrasonographic studies from all the patients with submucosal tumors who were treated surgically. We assessed the sensitivity and
specificity of this technique in the diagnosis of malignancy in said lesions, alongside factors that predict malignant behavior with the
highest reliability. We also valued the reliability of ultrasound endoscopy in the assessment of lesion size and the wall layer where lesions are located. The results of histological studies were considered
the gold standard.

Results: the average size of lesions as measured by ultrasound endoscopy was 37.42 mm, with no significant differences in surgical piece: 38.98 (p = 0.143). However, conventional endoscopy
underestimates the size of lesions. Endoscopic ultrasonography was able to adequately establish the origin layer of lesions in all cases. Sensitivity, specificity, positive predictive value, and negative predictive value of ultrasound endoscopy in the
diagnosis of malignancy were 89.5, 90.9, 89.5, and 90.9%, respectively.
In the univariate analysis, the ultrasonographic characteristics associated with a diagnosis of malignancy included presence of ulceration (p = 0.043), size above 4 cm (p = 0.049),
irregular edges of lesion (p = 0.0001), a heterogeneous ultrasonographic pattern (p = 0.002), and the presence of cystic areas
above 2 mm (p = 0.012). In the multivariate analysis, the last three factors were considered independent predictive factors for malignancy.
Share Button
New comment
Comments
No comments for this article
Related articles
Citation tools
D. Martínez-Ares, J. Souto-Ruzo, J. Yáñez López and J. L. Vázquez Iglesias. Usefulness of endoscopic ultrasonography in the preoperative diagnosis of submucosal digestive tumours. 0


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 185 visits.
This article has been downloaded 3 times.
Share
This article has been rated by 1 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