What does breast cancer discoloration and swelling look like when it first starts ... presents as a lump or thickening in the breast tissue, changes in the skin texture or color of the breast ...

An endoscopy can help healthcare professionals diagnose stomach cancer. The test uses a camera to see the stomach and help with taking a biopsy of the tissue ... cancer often does not cause ...

In the late stages of cancer, cells break through normal tissue boundaries and metastasize ... normally function like brakes on proliferation, and both copies within a cell must be mutated ...