Intramural Tumors of the Upper Gastrointestinal Tract – Possibility of Malignity Determination Using Endoscopic Ultrasonography Endoscopic ultrasonography (EUS) is the most reliable method for diagnosis and follow-up of intramural tu- mors. Ability of determination of the degree of malignity is limited because EUS features have not been defined. Possibilities of EUS are documented on a group of 68 patients in which 119 examinations were done within 1990–1999. Malignancy was correctly assessed in 91% patients.

        Key words: endoscopic ultrasonography, intramural tumors, diagnosis, malignity assessment