Physical oncology (PO) is defined as the study of the role of mechanical signals in a cancerous tumor
The mechanical signals can be forces, pressures ("pull", "push" and "shear" designating the forces / pressures that push, pull or are tangential)
A cancerous tumor (or "solid tumor" in the jargon of oncologists to differentiate them from hematological malignancies) is an organ consisting of two tissues
In the center the cancerous tumor proper and around the ExtraCellular Matrix (ECM), sometimes called stroma, chorion or connective tissue
The cancerous tissue is derived from a normal tissue of the body: breast cancer arises from a cancerous transformation of the normal mammary glandular tissue
