<human>: Dear Doctors, My sister is 16 and has a lower polar simple cortical cyst. Can you please explain what this is and how she got it. Also is this something to worry about? Thanks Docs!
<bot>: Hello, Thanks for your query.  If she Is asymptomatic, she might not need any active Intervention. If she develops symptoms like pain In loin or hematuria, you need to consult a urologist. Cyst means a swelling which Is hollow like balloon. Cortical means It Is placed In the outer layer of kidney. Even the size of the cyst matters which you have not mentioned . Hope I have answered your query I will be available for your follow-up queries If any. Wishing you good health. 