The most serious, fatal risk consequence of Nutcracker Syndrome is that it may lead to renal vein embolism, causing life-threatening acute renal failure, as well as anemia, infertility and pelvic stasis. 1. Acute renal failure: Nutcracker syndrome interferes with renal reflux and may lead to thrombosis, which if not treated in time may lead to acute renal failure and thus life-threatening. 2. Anemia: Nutcracker syndrome due to two blood vessels compression of the left renal vein reflux, which may lead to hematuria, proteinuria, etc. The loss of blood and protein may lead to anemia, which may be hazardous to health. 3. Infertility: Obstruction of the venous return of the left kidney will lead to varicocele, and at the same time, there will be pain in the lower back and abdomen, and in serious cases, it may even affect fertility and infertility. And women will lead to irregular menstruation, which will also affect fertility in severe cases. 4. Pelvic stasis: If elderly women suffer from this type of disease, pelvic reflux is obstructed, which will trigger pelvic stasis syndrome, pelvic pain, lumbar pain and other clinical manifestations, which in turn will seriously affect the quality of daily life. Once Nutcracker syndrome occurs, you need to go to the hospital as soon as possible for treatment.