What are the diagnostic criteria for complex cysts on postsurgical breast ultrasonography?

Updated: Dec 19, 2018
  • Author: Susan Ackerman, MD; Chief Editor: Eugene C Lin, MD  more...
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A complex cyst is a lesion that lacks one or more of the 4 criteria for a simple cyst. Complex cysts may contain internal echoes, limited posterior acoustic enhancement, wall irregularity, and/or an irregular shape. Further evaluation with cyst aspiration usually is recommended to exclude malignancy.

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