Our expert says:
1. Factors predisposing to the development of deep vein thrombosis:
Prolonged bed rest, surgery, severe trauma, heart failure, women who take birth control pills with a high estrogen content and cancer.
2. The blue around the chin would probably be due to a lack of oxygen.
3. When you find a pulmonary embolus you should look for the source, which is mostly in the deep veins of the lower legs, but can also originate in the pelvic veins. The pathologist must have seen thrombi in the pelvic veins.
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