Multiple stones in almost the whole length of the ureter.

This video shows Multiple stones in almost the whole length of the ureter.
If the ureteral blockage isn't treated, urine can back up and damage the kidneys. This can cause pain and put the patient at risk of infection. In severe cases, a ureteral obstruction can lead to kidney failure, sepsis (life-threatening infection), or death.
A urinary tract infection may result when bacteria become trapped in urine that pools above a blockage. When stones block the urinary tract for a long time, urine backs up in the tubes inside the kidney, causing excessive pressure that can cause the kidney to swell (hydronephrosis) and eventually damage it.
Ureteral blockage can lead to kidney damage, kidney stones, and infection. Symptoms can include pain in the affected side, decreased or increased urine flow, and urinating at night. Symptoms are more common if the blockage is sudden and complete.
A stone can remain in the kidney for years or decades without causing any symptoms or damage to the kidney. Typically, the stone will eventually move through the urinary tract and is passed out of the body in the urine. A stone may cause pain if it becomes stuck and blocks the flow of urine.
Extracorporeal shock wave lithotripsy is a technique for treating stones in the kidney and ureter that do not require surgery. Instead, high-energy shock waves are passed through the body and used to break stones into pieces as small as grains of sand.
Around 80% of kidney stones that are smaller than 4 millimeters (mm) will pass on their own in about 31 days. Approximately 60% of kidney stones that are 4–6 mm will pass on their own in about 45 days.
Usually, treatment includes pain relievers and drinking plenty of water to help pass the stone out of the urinary tract. Sometimes, medical procedures are needed to break up larger stones so they can pass out of the body.
It is generally thought that only smaller stones may be impacted in the ureter but in this case, you can see a larger stone, in the ureter. There is moderate dilatation of the renal pelvicalyceal system with mild to moderate hydroureter.
Once the stone gets caught in the ureter, it may partially or completely block the flow of urine. This blockage causes pain that is usually felt in the middle of the back or side and may radiate toward the groin. If a stone that is blocking urine flow is left untreated it can cause damage to the kidney or ureter.
Left untreated, kidney stones can block the ureters or make them narrower. This increases the risk of infection, or urine may build up and put added strain on the kidneys.
Approximately 60% of kidney stones that are 4–6 mm will pass on their own in about 45 days. Around 20% of kidney stones that are larger than 6 mm will pass on their own in about 12 months. However, when stones are this large, it is best to seek immediate surgical removal.
Ureteral obstruction is a blockage in one or both of the tubes (ureters) that carry urine from your kidneys to your bladder. Ureteral obstruction can be curable. However, if it's not treated, symptoms can quickly move from mild — pain, fever, and infection — to severe — loss of kidney function, sepsis, and death.
Large stones, especially those that fill the kidney, or stones that remain untreated after a long time, can cause permanent damage to the kidney and may lead to kidney loss. This damage often occurs without any symptoms, which is why it is important to see a urologist if you have a stone.
Relationship of Sexual Intercourse with ureteral stone in distal one-third of the ureter.
Sexual Intercourse May Clear Distal Ureteral Stones. Having sex 3-4 times a week was associated with a significantly greater stone passage rate than tamsulosin or standard medical therapy. Sexual intercourse may be an effective way to clear distal ureteral stones, researchers have concluded.
A ureteral obstruction that causes severe pain might require an immediate procedure to remove urine from your body and temporarily relieve the problems caused by a blockage. A ureteral stent is a hollow tube inserted inside the ureter to keep it open.
Ureteral stones are kidney stones that are stuck within one of the two ureters leading from the kidney to the bladder.
Signs and symptoms of kidney and ureteral stones may include:
Pain in the back and side, often just below the ribs.
Pain that changes, from the kidney to the level of blockage into the ureter.
Pain with urination.
Nausea and/or vomiting.
Frequency of micturition
Urine that is cloudy or has a strong, foul smell.
Blood in the urine.
Most small stones in patients with relatively mild hydronephrosis can be treated with observation and acetaminophen. More serious cases with intractable pain may require drainage with a stent or percutaneous nephrostomy.
Medium to large stones eventually begins to move from the kidney to the ureter, where they get stuck. The main symptom is severe pain on either side of the back.