Synchronous double malignant tumors of the gall bladder: a case-report of squamous cell carcinoma with an angiosarcoma

The first case of synchronous double malignant tumors of the gall bladder having squamous cell carcinoma and an angiosarcoma at different sites is being reported in the world literature. The etiologic, diagnostic and therapeutic aspects of these malignancies and the significance of their concurrence are discussed