Calculi, renal means: Calculi, renal, also known as kidney stones. Common causes of bloody urine, pain in the stomach, flanks, and groin. One in twenty people will experience it at one time or another in their lives. The development of stones can be caused by decreased urine volume, increased excretion or decreased urinary calcium and stone-forming ingredients such as urate, cystine (xanthine), urate, urate, urate, xanthine and phosphate. Stones form within the urinary collecting area, the pelvis of a kidney. They can range in size between tiny stones to large stones that are the same size as the renal pelvis. It is often sudden, intense, intermittent and very painful. Common symptoms include nausea and vomiting. Recent reductions in fluid intake and increased activity with dehydration may be factors that contribute to the condition. The treatment includes pain relief, fluid intake, and hydration. If there are concurrent infections, antibiotics may be prescribed. Most stones dissolve within 48 hours. Some stones might not pass however. The ability to pass stones depends on several factors. The factors that influence the ability to pass a stone include size, age, gender, size and size of stone. The chance that a 4mm stone will pass is 80, while the chance for a 5mm stone to do so is 20. Urologic intervention might be necessary if a stone fails to pass. Nephrolithiasis, or urolithiasis is another name for the process of stone formation. “Nephrolithiasis”, which is the Greek word for kidney, is derived the nephros + lithos stones = kidney stones. “Urolithiasis,” is the French term “urine”, which is itself a combination of the Latin “urina,” and the Greek “ouron,” meaning urine. = Urine stone.
(in Medical Dictionary)