I recently had a cat scan done. the doctor said i have a renal cyst. im 21 years old is that bad or what.?

Don't worry: One person in four has a lone kidney cyst, or maybe a few. If the radiologist is confident that it is a simple cyst, don't worry about it. It's a total non-problem. If it gets too big or you can feel it, you can have a needle put into it and have the fluid removed under ultrasound guidance.

? Family history: One condition is polycystic kidneys- runs in families, multiple cysts, may be cysts in other organs like liver. Begign cysts can seen. Size and characteristics are important.

If truly simple and: Not associated with many more cysts in the kidneys or liver, it is benign and nothing to worry about. Many people have them.