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The most common type of cast, hyaline casts are solidified Tamm–Horsfall mucoprotein secreted from the tubular epithelial cells of individual nephrons. Low urine flow, concentrated urine, or an acidic environment can contribute to the formation of hyaline casts, and as such, they may be seen in normal individuals in dehydration or vigorous exercise.
Hyaline casts contain only protein and can be found in low numbers in healthy people; their numbers may increase transiently after exercise or dehydration. Persistently increased numbers are seen in many renal diseases. [113] They are almost transparent and can be difficult to see using light microscopy. [114]
PAS stain. Kidney biopsy. Specialty. Nephrology. Myeloma cast nephropathy, also referred to as light-chain cast nephropathy, is the formation of plugs (urinary casts) in the kidney tubules from free immunoglobulin light chains leading to kidney failure in the context of multiple myeloma. It is the most common cause of kidney injury in myeloma. [1]
Acute tubular necrosis is classified as a "renal" (i.e. not pre-renal or post-renal) cause of acute kidney injury. Diagnosis is made by a FENa (fractional excretion of sodium) > 3% and presence of muddy casts (a type of granular cast) in urinalysis. On histopathology, there is usually tubulorrhexis, that is, localized necrosis of the epithelial ...
D006530. Hepatorenal syndrome (HRS) is a life-threatening medical condition that consists of rapid deterioration in kidney function in individuals with cirrhosis or fulminant liver failure. HRS is usually fatal unless a liver transplant is performed, although various treatments, such as dialysis, can prevent advancement of the condition.
Hypertensive kidney disease is a medical condition referring to damage to the kidney due to chronic high blood pressure. It manifests as hypertensive nephrosclerosis (sclerosis referring to the stiffening of renal components). [2] It should be distinguished from renovascular hypertension, which is a form of secondary hypertension, and thus has ...
Functions of a healthy kidney include maintaining a person's fluid balance, maintaining an acid-base balance; regulating electrolytes sodium, and other electrolytes; clearing toxins; regulating blood pressure; and regulating hormones, such as erythropoietin; and activation of vitamin D. The kidney is also involved in maintaining blood pH balance.
Minimal change disease (MCD), also known as lipoid nephrosis or nil disease, among others, is a disease affecting the kidneys which causes nephrotic syndrome. [1] Nephrotic syndrome leads to the loss of significant amounts of protein to the urine (proteinuria), which causes the widespread edema (soft tissue swelling) and impaired kidney function commonly experienced by those affected by the ...