What are 11 causes of a gastric filling defect?

1. Gastric carcinoma
2. Lymphoma, especially non-Hodgkin's lymphoma
3. Metastatic disease, especially melanoma or breast tumors
4. Polyps (hyperplastic or adenomatous)
5. Leiomyoma
6. Leiomyosarcoma
7. Lipoma
8. Ectopic pancreas
9. Carcinoid
10. Hamartoma (Peutz-Jeghers syndrome, Cronkhite-Canada syndrome)
11. Kaposi's sarcoma