A member asked:

I've had multiple bilateral simple renal cysts for a few years. recent ultrasound shows internal echoes in one of them. can simple cyst turn complex?

A doctor has provided 1 answer
Dr. Michael Gabor answered

Specializes in Diagnostic Radiology

Yes: A simple cyst can become more complex if bleeding or infection occurs within it. Rarely, intracystic malignancy can occur. If it is just some low level echoes, it is probably nothing to worry about. If there are multiple renal cysts, it is not uncommon for one or two to have some internal echoes. If there are no suspicious features, sometimes they are ignored, followed with serial US, or f/uCT

Answered 6/11/2014

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