Cancer
Some cancers can become a greater risk for the formation of blood clots including the cancers that involve stomach, pancreas, brain, kidneys, ovaries, lungs, uterus, and blood cancers. Blood cancers like myeloma and lymphoma make it easier for the blood to clot more often in majority of the patients. In addition, the higher the stage of cancer a person is going through, the higher the chances of developing pulmonary embolism are.