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Duplicated ureter or duplex collecting system is a congenital condition in which the ureteric bud, the embryological origin of the ureter, splits (or arises twice), resulting in two ureters draining a single kidney. It is the most common renal abnormality, occurring in approximately 1% of the population.
Duplex-system ureterocele: treatment options vary with the individual and include: endoscopic incision of the corresponding ureteric orifice in case of ureteric meatal stricture; upper pole nephrectomy for a poorly functioning unit with ureterectomy or, where there is useful renal function, ureteropyelostomy.
Ectopic ureter (or ureteral ectopia) is a medical condition where the ureter, rather than terminating at the urinary bladder, terminates at a different site. [1] [2] In males this site is usually the urethra, in females this is usually the urethra or vagina. [3]
An artificial organ is a human-made organ device or tissue that is implanted or integrated into a human – interfacing with living tissue – to replace a natural organ, to duplicate or augment a specific function or functions so the patient may return to a normal life as soon as possible. [1]
The collecting duct system of the kidney consists of a series of tubules and ducts that physically connect nephrons to a minor calyx or directly to the renal pelvis.The collecting duct participates in electrolyte and fluid balance through reabsorption and excretion, processes regulated by the hormones aldosterone and vasopressin (antidiuretic hormone).
While Slayman was unique in that he was chosen for a pig kidney transplant, his condition was far from rare: About 800,000 people in the U.S. have kidney failure and require dialysis, often a time ...
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Changes in renin ultimately alter the output of this system, principally the hormones angiotensin II and aldosterone. Each hormone acts via multiple mechanisms, but both increase the kidney's absorption of sodium chloride, thereby expanding the extracellular fluid compartment and raising blood pressure. When renin levels are elevated, the ...