Conversation: The conversation between human and AI assistant.
[|Human|] I recently had a scan that showed a 8.4mm cyst on my left kidney. However as I was being scanned for gallstones, the cyst was never mentioned (the scan was done overseas and so they type up a report of their findings). I am now worried that it has been disregarded. What could it be?
[|AI|]  Hello Thanks for writing to simple cortical cyst in kidney is a benign lesion of unknown etiology arising from renal parenchymal, and it rarely causes complications. It may be the reason for omission of small renal cyst in previous reports. Renal cortical cyst is a very common type of kidney cyst, and it is a fluid-filled sac. Small cysts generally doesn't causes symptoms, and it is found in a routine examination for other issues. When cyst grows larger, patient may feel pain or pressure in back or sides, which often radiates downward. Renal cortical cysts usually doesn't require any treatment. Take Care Chat Doctor.