Varieties of Cancerogenesis

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Abstract
The process of neoplastic growth is redefined as cancerogenesis and both morphological and biological deviations are described. Modes of cancerogenic progression consist of progressive tissue transformations (transformative progression) in the region of the neoplasm and proliferation (prolif-erative progression). The speed of growth of both progressions identify the originating tumor and the biology of the host. Four main varieties of cancerogenesis are identified; rapid, uniform, prolifera-tive, and transformative. With rapid cancerogenesis, transformative and proliferative progressions increase simultaneously and quickly cause death. The speed of cancerogenesis is differentiated into 2 types: focal and shoal-like. In the latter type, a number of tumors develop spontaneously throughout the entire cancerogenic area.