Hematogenous dissemination: medical term that means dispersion, scattering or spread somewhat through the blood, from the Greek haima haimatos blood and genos geneos, origin, and this of the verb gignomai, get to be, birth, become, occur, take place, result: that it becomes or is produced by blood. In Hematogenous metastasis transport and development of cancer cells carried out blood-borne, there is therefore a hematogenic dissemination of these cells.