The superannuation contributions caps will remain unchanged for 2015-16 with the concessional cap stuck at $30,000 (or $35,000 for those aged 49 years or over on 30 June 2015).
A staghorn calculus is a very large and often irregularly shaped kidney stone that grows in one or both kidneys. Having certain kinds of urinary tract infections can increase the risk of developing them. They generally do not move because they are so large - usually they are discovered on an ultrasound, ct, or mri.
Some stones grow very large and fill the entirety of the kidney collecting system. They are called staghorn calculi (calculus = stone) because they look like antlers. While most kidney stones are made up of calcium oxalate crystals, this type of stone is a composite of struvite, carbonate, and apatite. They are usually the result of recurrent urinary tract infections, in which the bacteria produce ammonia, allowing chemicals in the urine to form the nidus for stone formation.