hydronephrosis

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Written by Chen Feng
Urology
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Is hydronephrosis prone to recurrence?

Whether hydronephrosis is prone to recurrence depends on the cause of the hydronephrosis. Common causes of hydronephrosis in clinical practice are as follows: First, urinary tract stones. When a stone is lodged in the ureter or urethra, it can cause urinary obstruction. The urine produced by the kidneys cannot be expelled in time, leading to hydronephrosis. If the stones in the urinary system can be completely removed, it generally does not recur easily. However, if there are still quite a few stones in the kidney or bladder after clearing the urinary tract, it is more likely to recur, because the stones might move down, get lodged in the ureter or urethra again, and cause hydronephrosis. Second, prostate enlargement. Hydronephrosis caused by prostate enlargement is generally more likely to recur because the prostate continues to grow in size. Even if the enlarged prostate is surgically removed, it still might lead to urethral stricture, thereby causing hydronephrosis again.

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Written by Zhou Qi
Nephrology
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What department should I go to for hydronephrosis?

Hydronephrosis refers to the accumulation of urine in parts such as the renal pelvis and calyces due to some reason causing the urinary system to not smoothly excrete urine. After the kidneys produce urine, it cannot be excreted smoothly, leading to the accumulation called hydronephrosis. Generally, it is necessary to visit the urology department, as the most common causes of hydronephrosis are stones or tumors in the urinary system and prostatic hyperplasia, among other issues, all of which require urological treatment. In most cases, surgery may be necessary to relieve the obstruction and resolve the hydronephrosis. However, there are also a small number of patients who may have hydronephrosis due to other reasons, such as cervical cancer or colorectal cancer patients, where enlarged tumors may compress the ureter leading to hydronephrosis. Patients with cervical cancer need to undergo surgical treatment in gynecology, while those with colorectal cancer may need treatment in general surgery.

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Written by Zhou Qi
Nephrology
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Can people with hydronephrosis drink water?

Whether patients with hydronephrosis can drink water depends on whether the hydronephrosis has been resolved. Hydronephrosis occurs due to a blockage in the urinary system, often caused by inflammation, scarring, or adhesions of the ureters, or by obstructions such as stones or tumors in the urinary tract, or possibly by an enlarged prostate, leading to the inability of the bladder to properly expel urine. In summary, when the urine produced by the kidneys cannot be properly expelled from the body, it leads to the expansion of the renal pelvis and calyces, known as hydronephrosis. Drinking water at this time can certainly aggravate the condition of hydronephrosis if the body is already struggling to expel fluids. Therefore, if this blockage remains unresolved, patients should limit their intake of fluids. However, if the obstruction is cleared and the urinary tract is smooth, allowing urine to be expelled normally, drinking water is permissible.

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Written by Li Yuan Wei
Urology
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Is hydronephrosis of the second degree severe?

Hydronephrosis grade two, this "grade two" is likely a classification used in ultrasound or CT imaging. For hydronephrosis, the presence of condition itself indicates that the pathology has already affected kidney function. The most common causes include ureteral obstruction, or obstruction at the renal pelvis exit, typically due to stones or tumors, or narrowing caused by plastic tubes. Once hydronephrosis occurs, these conditions have already altered kidney function, necessitating further diagnosis to identify the cause, with surgery possibly being required. The most common objective assessment is a CT scan of the urinary system, with enhanced CT being the most accurate for understanding the severity of the hydronephrosis. Also, it helps identify the location of the ureteral obstruction, and thirdly, it can help ascertain the cause and provide treatment.

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Written by Zhou Qi
Nephrology
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Will people with hydronephrosis have edema?

Hydronephrosis can potentially cause patients to exhibit symptoms of edema. Urine is produced by the kidneys and is expelled from the body through the urinary system, including the ureters and bladder. If there is an obstructive issue in the urinary system, the urine produced by the kidneys cannot be excreted smoothly, leading to hydronephrosis. When a large amount of fluid cannot be excreted, it eventually causes edema in the body. However, if the patient has hydronephrosis on only one side and the other kidney is healthy, the healthy kidney can fully compensate for the entire kidney function and sufficiently excrete fluids. Therefore, patients with unilateral hydronephrosis often do not show obvious signs of edema. But if a patient has bilateral hydronephrosis, and urine produced by both kidneys cannot be excreted, the patient will exhibit signs of edema.

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Written by Zhou Qi
Nephrology
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Is hydronephrosis scary?

Hydronephrosis is rather alarming, as it harms the body in two main ways: First, it creates increased pressure inside the kidneys due to fluid accumulation in the urinary system. This pressure can compress kidney tissue, and if not resolved, may lead to irreversible kidney damage and renal failure. However, if hydronephrosis formed in the short term is quickly addressed by clearing the urinary system, it typically has minimal impact on kidney function. Another aspect relates to the causes of hydronephrosis, some of which are complicated issues, such as bladder cancer, rectal cancer, or cervical cancer in females. These cancers can press on the ureter, leading to hydronephrosis. Other causes, such as urolithiasis or benign prostatic hyperplasia, are relatively easier to manage.

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Written by Chen Feng
Urology
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How to relieve pain from hydronephrosis

Hydronephrosis accompanied by pain is generally caused by kidney stones lodged in the ureter leading to renal colic, and the stones in the ureter can cause urinary obstruction, thus presenting as hydronephrosis. To alleviate the pain in such cases, treatment methods are chosen based on the size of the stone. If the kidney stone is relatively small and estimated to be able to pass by itself into the bladder, temporary use of pain relief medication can be administered for symptomatic treatment, along with medication that dilates the ureter to expand its diameter, facilitating the expulsion of the stone. If the stone is large and predicted not to pass on its own, temporary symptomatic treatment with pain relief medication can be used. Meanwhile, after completing preoperative examinations, surgery can be performed to remove the stone, which can also completely alleviate the pain symptoms.

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Written by Zhou Qi
Nephrology
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How is hydronephrosis diagnosed?

Strictly speaking, hydronephrosis cannot be considered an independent disease; it is merely a descriptive term in imaging, and is the result of many causes and various etiologies. It occurs because urine produced by the kidneys cannot smoothly pass through the ureters and bladder to be excreted from the body, leading to fluid accumulation in the renal pelvis and calyces. This may be caused by prostate enlargement, tumors in the urinary system, urinary system stones, or chronic inflammation and scarring of the ureters. Generally, hydronephrosis can be detected through imaging techniques, including urinary system ultrasound or CT, which can confirm the diagnosis.

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Written by Zhou Qi
Nephrology
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Kidney hydronephrosis atrophy symptoms

Severe hydronephrosis may cause kidney atrophy. The symptoms of the patient can be divided into two aspects: Firstly, hydronephrosis may cause some clinical symptoms, such as some patients may experience swelling in the lumbar and back area, and a decrease in urine output. Patients may suffer from spasms of the ureter due to obstruction of the urinary system, resulting in severe pain, and some patients may also have hematuria. On the other hand, the atrophy of kidney tissue caused by this hydronephrosis actually means the loss of kidney function. Patients may exhibit symptoms of renal failure, such as swelling of limbs, increased blood pressure, nausea, vomiting, loss of appetite, anemia, and other clinical symptoms.

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Written by Li Liu Sheng
Nephrology
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How is hydronephrosis detected?

The kidneys have a very strong compensatory ability. In the early stages of hydronephrosis, the amount of fluid may not be large, or the duration may not be long, and usually, the patient may have no symptoms. Hydronephrosis is often discovered during health examinations or through ultrasound or CT scans performed during hospital stays. Of course, if the hydronephrosis persists for too long and the volume is very large, the patient can gradually feel discomfort or a distended sensation in the lower back or upper abdomen. Moreover, if the hydronephrosis is caused by kidney stones, the patient often experiences severe back pain, and there might even be visible blood in the urine. Hydronephrosis can also lead to symptoms of urinary tract infections such as frequent urination, urgent urination, and painful urination. Prolonged hydronephrosis can lead to a decline in kidney function, resulting in symptoms like fatigue, loss of appetite, and poor overall health. Therefore, it is crucial for patients to undergo regular ultrasound examinations of the kidneys to detect hydronephrosis early.