Hematologic cancers originate from progenitor cells in the hematopoietic system, while epithelial cancers arise in solid organs from epithelial linings.

“the hologic cancers of course are the blood cancers and they start from uh progenitors in the hematopoetic system... so these start in the solid organs of the body uh and that's all the way from the rectum up through the GI tract through the stomach through the esophagus the pancreas the GU organs the test the ovary the prostate all of these solid or organs have ducts and as I've mentioned it's the epithelial lining of the ducts that are turning over that become the cancer in blood cancers it's the more primordial cells that develop into neutrophils and lymphocytes and other other types of cells”