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A calculus (pl.: calculi), often called a stone, is a concretion of material, usually mineral salts, that forms in an organ or duct of the body. Formation of calculi is known as lithiasis (/ ˌ l ɪ ˈ θ aɪ ə s ɪ s /). Stones can cause a number of medical conditions.
Lithiasis (stone formation) in the kidneys is called nephrolithiasis (/ ˌ n ɛ f r oʊ l ɪ ˈ θ aɪ ə s ɪ s /), from nephro-, meaning kidney, + -lith, meaning stone, and -iasis, meaning disorder. A distinction between nephrolithiasis and urolithiasis can be made because not all urinary stones (uroliths) form in the kidney; they can also ...
Additionally, hypercalciuria can contribute to kidney stone formation which may present with flank or back pain that comes and goes. It can be painful to pass kidney stones and in extreme cases cause kidney damage. [2] [3] Patients that both form kidney stones and have hypercalciuria are at increased risk for bone loss leading to osteoporosis. [4]
Nephrolithiasis is the medical term employing kidney stone formation. The increased saturation of urine with calcium elevates the rate of stone formation within the kidneys, due to the excess calcium precipitating and forming crystals, which develop into larger stones over time. [ 23 ]
It is a disease involving the defective transepithelial transport of cystine and dibasic amino acids in the kidney and intestine, and is one of many causes of kidney stones. If not treated properly, the disease could cause serious damage to the kidneys and surrounding organs, and in some rare cases death.
Hematuria can be classified according to visibility, anatomical origin, and timing of blood during urination. [1] [6]In terms of visibility, hematuria can be visible to the naked eye (termed "gross hematuria") and may appear red or brown (sometimes referred to as tea-colored), or it can be microscopic (i.e. not visible but detected with a microscope or laboratory test).
The term nephrocalcinosis is used to describe the deposition of both calcium oxalate and calcium phosphate. [1] It may cause acute kidney injury. It is now more commonly used to describe diffuse, fine, renal parenchymal calcification in radiology. [2] It is caused by multiple different conditions and is determined by progressive kidney dysfunction.
Dent's disease (or Dent disease) is a rare X-linked recessive inherited condition that affects the proximal renal tubules [1] of the kidney.It is one cause of Fanconi syndrome, and is characterized by tubular proteinuria, excess calcium in the urine, formation of calcium kidney stones, nephrocalcinosis, and chronic kidney failure.