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The kidneys are easily examined, and most pathological changes in the kidneys are distinguishable with ultrasound. US is an accessible, versatile inexpensive and fast aid for decision-making in patients with renal symptoms and for guidance in renal intervention. [1] Renal ultrasound (US) is a common examination, which has been performed for ...
Angiomyolipoma seen as a hyperechoic mass in the upper pole of an adult kidney on renal ultrasonography. Renal ultrasonography of a person with tuberous sclerosis and multiple angiomyolipomas in the kidney: Measurement of kidney length on the US image is illustrated by '+' and a dashed line. CT scan of a renal angiomyolipoma.
Crossed dystopia (also unilateral fusion cross fused renal ectopia) is a rare form of renal ectopia (kidney displacement) where both kidneys are on the same side of the spine. [1] In many cases, the two kidneys are fused together, yet retain their own vessels and ureters . [ 2 ]
Pancake kidney (also known as disc, shield or doughnut kidney [1]) is a rare anomaly of the kidney with complete fusion of the superior, mild and inferior poles of both kidneys. The kidney is seen as a single, disc-shaped mass typically located in the pelvis. [2] Each kidney has its own ureter that does not cross the midline. [1]
The fused part is the isthmus of the horseshoe kidney. The abnormal anatomy can affect kidney drainage resulting in increased frequency of kidney stones and urinary tract infections as well as increase risk of certain renal cancers. [1] Fusion abnormalities of the kidney can be categorized into two groups: horseshoe kidney and crossed fused ...
The combined length of both kidneys is 80% or lower than a single normal kidney and the glomerular filtration rate is reduced to 30% of the normal. The number of renal lobes is reduced to five to six or occasionally as few as one or two. The number of nephrons per lobe is reduced as well.
Grade IV – dilation of the renal pelvis and calyces with moderate ureteral tortuosity; Grade V – gross dilatation of the ureter, pelvis and calyces; ureteral tortuosity; loss of papillary impressions; The younger the patient and the lower the grade at presentation the higher the chance of spontaneous resolution.
Whilst ultrasound allows for visualisation of the ureters and kidneys (and determine the presence of hydronephrosis and / or hydroureter), an IVU is useful for assessing the anatomical location of the obstruction. Antegrade or retrograde pyelography will show similar findings to an IVU but offer a therapeutic option as well.