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  2. Kidney stone disease - Wikipedia

    en.wikipedia.org/wiki/Kidney_stone_disease

    Small crystals formed in the kidney. The most common crystals are made of calcium oxalate and they are generally 4–5 mm. Staghorn kidney stones are considerably larger. 1. Calcium and oxalate come together to make the crystal nucleus. Supersaturation promotes their combination (as does inhibition.) 2.

  3. Hydronephrosis - Wikipedia

    en.wikipedia.org/wiki/Hydronephrosis

    The signs and symptoms of hydronephrosis depend upon whether the obstruction is acute or chronic, partial or complete, unilateral or bilateral.Hydronephrosis that occurs acutely with sudden onset (as caused by a kidney stone) can cause intense pain in the flank area (between the hips and ribs) known as a renal colic.

  4. What causes kidney stones? What does kidney stone pain ... - AOL

    www.aol.com/causes-kidney-stones-does-kidney...

    A kidney stone is a hard object, which can be as small as a grain of salt or as big as a golf ball, made from chemicals—calcium oxalate, uric acid, struvite, and cystine—found in our urine ...

  5. Renal ultrasonography - Wikipedia

    en.wikipedia.org/wiki/Renal_ultrasonography

    Figure 18. Renal stone located at the pyeloureteric junction with accompanying hydronephrosis. [1] With US, larger stones (>5–7 mm) within the kidney, i.e., in the calyces, the pelvis and the pyeloureteric junction, can be differentiated, especially in the cases with accompanying hydronephrosis (Figure 18 and Figure 19).

  6. Renal pelvis - Wikipedia

    en.wikipedia.org/wiki/Renal_pelvis

    [citation needed] A large "staghorn" kidney stone may block all or part of the renal pelvis. The size of the renal pelvis plays a major role in the grading of hydronephrosis. Normally, the anteroposterior diameter of the renal pelvis is less than 4 mm in fetuses up to 32 weeks of gestational age and 7 mm afterwards. [2]

  7. Medullary sponge kidney - Wikipedia

    en.wikipedia.org/wiki/Medullary_sponge_kidney

    Non-obstructing stones in MSK can be associated with significant and chronic pain even if they're not passing. It is not certain what causes this pain, but researchers have proposed that the small numerous stones seen in MSK may cause obstruction of the small tubules and collecting ducts in the kidney.

  8. Ureteric stricture - Wikipedia

    en.wikipedia.org/wiki/Ureteric_stricture

    Kidney stones are becoming more common with time, and their incidence is believed to increase recently due to unhealthy diet habits. The passage of kidney stones into ureters might lead to their impaction and the development of local inflammatory process around the stone in addition to the obstruction of the ipsilateral kidney and build up of pressure manifested as hydronephrosis.

  9. Renal colic - Wikipedia

    en.wikipedia.org/wiki/Renal_colic

    Renal colic, also known as ureteric colic, is a type of abdominal pain commonly caused by obstruction of ureter from dislodged kidney stones.The most frequent site of obstruction is the vesico-ureteric junction (VUJ), the narrowest point of the upper urinary tract.

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