Complex Renal Cysts: Symptoms & Treatment

Many renal cysts are benign, and people can spend their entire lives without any knowledge of a cyst. A complex renal cyst is formed when there are calcifications and bleeding in the renal cyst.

People who are over 50 years old have a higher risk of developing complex renal cysts than others.

According to some researches, polycystic kidney disease may be one of the reasons for the formation of complex renal cyst.


In most of the cases, complex renal cysts hardly show any symptoms. Complex renal cysts can be found only when people have a health examination.

However, here are a few symptoms of this disease, including:

  • A dull throbbing pain in the lower back region, especially where the kidneys are located (similar to the kidney stones symptom).
  • Blood in urine (hematuria) — as a sign of kidney infection can be observed. Patients may also feel burning sensation while urinating.
  • Upper abdominal pain and pressure.
  • Some patients may also suffer from fever, vomiting induced nausea and generalized body weakness.


A simple renal cyst may not require any major treatment. But in case of complex renal cysts, some treatments are needed, including:

  • Use pain killers to relieve pain.
  • Periodic inspection is necessary to see if it grows or causes any complication.

If the cyst is malignant after a series of inspections, doctors may:

  • puncture the cyst and fill it with alcohol to destroy the cyst. This procedure is known as percutaneous sclerotherapy.
  • remove the cyst from the kidneys by surgery.

Remember to consult your doctors for your symptoms and treatments.

Keyword: complex renal cyst.

* The Content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.