title: Pulmonary embolus originating below knee.
mesh_terms: D000368:Aged; D005260:Female; D006801:Humans; D007717:Knee; D007866:Leg / Q000098:blood supply*; D008405:Massage / Q000009:adverse effects; D011655:Pulmonary Embolism / Q000209:etiology*; D013924:Thrombophlebitis / Q000150:complications*