Our expert says:
Phleboliths are masses, deposits or growths which develop in the wall of a vein and are composed of calcium or lime. They are common in the pelvic area and are stationary and harmless but can indicate the presence of more dangerous conditions or diseases. Most adults have phleboliths and are unaffected by them because they are symptomless and their presence is usually only known after an individual has undergone X-ray imaging related to other health issues.
A pseudoarthrosis is nonosseous union of bone fragments of a fractured bone due to inadequate immobilization leading to existence of the 'false joint' that gives the condition its name. In this case your lumbarsacral joint.
You need to speak with your neurosurgeon for more detail.
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