Leiomyoblastoma of the stomach.

Seven cases of gastric leiomyoblastoma are reported, all of them benign. The subject of gastric leiomyoblastoma is reviewed from both clinical and pathologic aspects based on a review of 307 cases in the literature. Hemorrhage is a frequent sign (51.8%) but in 21.2% of cases leiomyoblastoma is asymptomatic. While such tumors have a malignant potential, a benign course was pursued in most of the cases (79.5%). The radiologic features of these tumors are similar to those of leiomyomas. An intramural location is the most common finding (41.4%) but intraluminal (22.7%), subserosal (25.7%) or dumbbell growth are also seen. In 31.3% of cases, the tumor is ulcerated.