Spontaneous tumors and common diseases in two colonies of Syrian hamsters. IV. Vascular and lymphatic systems and lesions of other sites.

Spontaneous tumors were found in the vascular and lymphatic systems upon systemic histologic examination of the cardiovascular, hematopoietic, and lymphatic tissues of Syrian hamsters from the Eppley (EC) and Hannover colonies (HC). The incidence of endothelial tumors (hemangioendotheliomas) was similar in both colonies and sexes. The hemangioendotheliomas generally originated in the liver and spleen.