Here, we report on a male patient in his mid-fifties with a known ectasia of the ascending aorta. Computed tomography led to the incidental finding of a 3 cm large submucosal tumor located on the anterior wall of the gastric body, close to the greater curvature. Magnetic resonance imaging and endoscopy confirmed the finding. An endoscopic ultrasound-guided biopsy, however, was not performed. The patient underwent laparoscopic gastric wedge resection under the tentative diagnosis of a gastrointestinal stromal tumor. Further analysis showed a glomangioma, which is a histological variant of a gastric glomus tumour. The patient made a swift and full recovery.