Can contrast-enhanced harmonic endosonography predict malignancy risk in gastrointestinal subepithelial tumors?

Can Contrast-Enhanced Harmonic Endoscopic Ultrasonography Differentiate Malignancy from Benign Disease?

Malignancy of Gastrointestinal Stromal Tumors

Download pose: Gastrointestinal stromal tumors (GIST) are the most important mesenchymal tumors of the intestinal tract. The vast majority of GISTs exhibit activating mutations of KIT or PDGFRA, but epic alteration of GISTs is largely unknown. In this study, we aimed to clarify the involvement of DNA lation in GIST malignancy. erimental Design: A total of 106 GIST specimens were studied. Levels...

Current Guidelines in the Management of Upper Gastrointestinal Subepithelial Tumors

Subepithelial tumors are frequently found in asymptomatic patients in Japan and Korea where cancer screening tests routinely include endoscopy. Most lesions are asymptomatic and clinically insignificant. However, carcinoid tumors, lymphomas, glomus tumor and gastrointestinal stromal tumors (GISTs) are malignant or have the potential to become malignant. Inflammation due to parasitic infestation...

Can 18F-FDG PET predict the grade of malignancy in thymic epithelial tumors? An evaluation of only resected tumors

Objective Although 18-fluorine fluorodeoxyglucose positron emission tomography (18F-FDG PET) is thought to be useful for predicting the histological grade of thymic epithelial tumors (TETs), it remains controversial. To date, just a few of many previous studies have included only resected cases. Therefore, we investigated 18F-FDG PET findings only in patients with resected TETs. Patients and ...

Contrast-Enhanced Ultrasonograpic Findings in Pancreatic Tumors

OBJECTIVE The purpose of this article is to present the potentials and limits of contrast-enhanced ultrasonography (CEUS) in the characterization of pancreatic tumors, usually hypoechoic or cystic at B-mode ultrasound. CONCLUSION As regards hypoechoic lesions at B-mode ultrasound, CEUS often can distinguish among adenocarcinoma, islet cell tumor and serous microcystic adenoma. As regards cyst...