Kidney Stones, also known as renal calculi, are hard masses that separate urine from the urinary tract. These stones can occur anywhere in the urinary tract, including the kidneys, bladder, ureters and urethra.
This fluid is called the cerebrospinal fluid (CSF). When it leaks out, the pressure around the brain and spinal cord drops. Causes of leakage through the dura include: 1  Certain head, brain, or spinal surgeries.  Head injury.
Yes: Leaks from the nose or ear are fairly common after head trauma or surgical mishaps. They are often missed until a clever physician tests the fluid for glucose using a reagent test strip. Spinal fluid leaks after a lumbar puncture are troublesome. ...Read more.