Extracorporeal ultrasound is an effective diagnostic alternative to endoscopic ultrasound for gastric submucosal tumours

Citation
K. Futagami et al., Extracorporeal ultrasound is an effective diagnostic alternative to endoscopic ultrasound for gastric submucosal tumours, SC J GASTR, 36(11), 2001, pp. 1222-1226
Citations number
22
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Gastroenerology and Hepatology","da verificare
Journal title
SCANDINAVIAN JOURNAL OF GASTROENTEROLOGY
ISSN journal
0036-5521 → ACNP
Volume
36
Issue
11
Year of publication
2001
Pages
1222 - 1226
Database
ISI
SICI code
0036-5521(200111)36:11<1222:EUIAED>2.0.ZU;2-S
Abstract
Background: Although endoscopic ultrasonography (EUS) is the best modality in the diagnosis of gastric submucosal tumours (G-SMT), it is still invasiv e and expensive. We evaluated the usefulness of transabdominal ultrasonogra phy (US) as an alternative to EUS in the assessment and clinical management of G-SMT. Methods: This is a prospective study of 156 successive patients who had been diagnosed with G-SMT by direct endoscopic visualization. For e ach patient, US was performed prior to EUS by an examiner who had not been informed about the site or the size of the patient's G-SMT beforehand. US d iagnoses were compared with those ascertained by EUS. Diagnostic grade by U S was divided into three groups: diagnosed (G-SMT was clearly demonstrated including location, site and type), detected (G-SMT was demonstrable but th e type was not clear) and undetected (G-SMT was not demonstrated by US). Re sults: We found that US can be an alternative to EUS for: 1) diagnosis of e xtramural compression, 2) diagnosis of G-SMT with size > 30 nun in diameter , 3) detection and measurement of the size of a G-SMT from 21 to 30 mm in d iameter, and 4) detection and measurement of the size of a G-SMT at both th e gastric angle and cardia, regardless of the size of the tumour. Overall s ensitivity and specificity for the detection of G-SMT were 82.5% and 100%. respectively. The diagnostic rates of G-SMT in each group were 60.1% (86/14 3) for diagnosed, 22.4% (32/143) for detected and 17.5% (25/143) for undete cted. Approximate 95% (21/22) of G-SMT over 20 mm in diameter were at least detected. and 97% (30/31) of G-SMT over 30 mm in diameter were diagnosed b y US. Conclusion: US can be an alternative method in the assessment of G-SM T, especially in the follow-up of patients already diagnosed.