gastric cannonball

Any smoothly contoured, large and non-ulcerated filling defect, seen in radiocontrast studies of the stomach
Aetiology Metastatic hepatoma, but also hematomas, submucosal leiomyomas, lymphomas, neurofibromas, metastatic intraperitoneal cancer, and other lesions that deform the gastric mucosa

gastric 'cannonball'

Radiology Any smoothly contoured, large and non-ulcerated filling defect, seen in radiocontrast studies of the stomach Etiology Metastatic hepatoma, but also seen with hematomas, multiple submucosal leiomyomas, lymphomas, neurofibromas, metastatic intraperitoneal CA, and other lesions that deform the gastric mucosa. Cf 'Golfball' metastases.