[Gastrointestinal stromal tumors in our practice].

The classification of tumours originating from the wall of gastrointestinal organs changed dramatically since of electronmicroscopy and immunohystochemistry were introduced. Previously these tumours were classified as leiomyomas, leiomyosarcomas or schwannomas. With the new methods these disorders can be described in more details and unified, and so the change to provide correct prognosis improved. Still, there are some unanswered questions remaining for the pathologists. In our material in the past 5 year we treated 9 patients because of GIST. Most of them were found in the stomach (6), one developed in the oesophagus, one in the small bowel and another one in the rectum. With describe our patients and look at the related articles literature about this important diseases. Though the incidence is under 1% of patients operated on because of gastrointestinal diseases, we would like to share our experiences in treatment.