View Cancer Origin PNG. It was called the american society for the control of cancer (ascc). Cancer has existed for all of human history.
It is widely accepted that genetic lesions have a major role in determining tumour phenotype, but evidence is also accumulating that cancers of distinct subtypes within an organ may derive from different 'cells of origin'.
History of the causes of cancer there have been numerous theories of causes of cancer throughout ages. Hippocrates used the greek words carcinos and carcinoma to describe tumors, thus calling cancer karkinos. the greek terms actually were words that were used to describe a crab, which hippocrates thought a tumor resembled. Pathologist david klimstra is an expert in finding diagnoses for cancers of unknown primary. Cancer classification based on histological type.