Am I at a higher risk of fat being injected into a vein if I have pelvic congestion syndrome and venous insufficiency?

Dear doll11,
you will need to get a clearance prior to your surgery. Generally speaking, as long as your surgeon stays above the muscle, the risk of pulmonary embolism is low. If you are considering a surgery, I would suggest you to consult a board-certified plastic surgeon. Only after a thorough examination you will get more information and recommendations.
Daniel Barrett, MD
Certified, American Board of Plastic Surgery
Member, American Society of Plastic Surgery
Member, American Society of Aesthetic Plastic Surgery