Probably related: Brown discharge is often due to a little bit of dried blood. If an ovarian cyst becomes large it can rupture and cause a leakage of blood or other fluid. A vaginal ultrasound can potentially cause a very small of amount of bleeding could also be the cause of the discharge. It could be related to one or both, and is not a cause for concern.
Answered 3/3/2016
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A doctor has provided 1 answer
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