[Leiomyosarcoma of the stomach]

A 35-year old woman showed gastrointestinal bleeding right after normal pregnancy. With endoscopy of the GI-tract with biopsy, ultrasound, conventional radiology of the stomach and computed tomography a gastric leiomyoma was diagnosed. After en-bloc resection of tumor, part of the stomach and spleen, histologic examination and size of tumor changed diagnosis in gastric leiomyosarcoma. Patient died 15 month postoperatively on systemic metastasis. Case report and review of the literature show difficulties in diagnosis and prognosis of gastric leiomyosarcoma.