What causes bilateral renal pelvis dilatation?

Bilateral renal pelvis separation may be caused by physiological factors, or it could be related to pathological conditions such as benign prostatic hyperplasia (BPH) or ureteral stones. It is advisable to visit the nephrology department of a hospital as early as possible for a comprehensive evaluation, and once the underlying cause is identified, appropriate treatment measures should be promptly initiated.

I. Physiological Factors

For example, prolonged urine retention in daily life can lead to increased urine volume in the bladder and elevated pressure in the urinary tract, resulting in obvious widening of the renal pelvis. This is considered a normal phenomenon and typically resolves spontaneously after urination.

II. Pathological Factors

1. Benign Prostatic Hyperplasia (BPH)

Under the influence of factors such as hormonal regulation and cellular imbalance, urine cannot be excreted normally, leading to separation of the renal pelvis and calyces, often accompanied by symptoms such as frequent urination and urgency. Patients are advised to follow medical guidance and undergo treatments such as transurethral resection of the prostate (TURP) or transurethral incision of the prostate (TUIP), with regular follow-up examinations after surgery.

2. Ureteral Stones

When stones occur in the ureter, they can cause urinary obstruction and painful urination. Additionally, urine retention in the renal pelvis may lead to renal pelvis separation. After symptom onset, patients may be guided by a physician to use medications such as tamsulosin hydrochloride sustained-release capsules, lithotriptic granules, or potassium sodium citrate granules. Surgical stone removal may be considered if necessary.

Other factors, such as kidney stones, may also contribute. In such cases, prompt medical attention is essential, along with enhanced self-care and monitoring.