Gastroblastoma
Definition
- Biphasic epithelial-mesenchymal tumor of the stomach
Diagnostic Criteria
- One report of three cases to date (Miettinen)
- One additional case report (Shin)
- Two components: mesenchymal and epithelial
- May be sharply or indistinctly demarcated
- Diffuse sheets of uniform oval to spindled cells
- Clusters and cords of epithelioid cells
- Occasional small gland formation by epithelioid cells in a field of spindled cells
- Mitotic rates observed: 0, 0, 4, 30 / 50 hpf
- All cases to date in young adults and one 9 year old
Robert V Rouse MD
Department of Pathology
Stanford University School of Medicine
Stanford CA 94305-5342
Original posting/updates: 2/4/10, 11/27/11
