Is it normal to have brown liquid in the area where you had a fat transfer 6 months prior to the liquid filled cyst?

I had fat injected into the sides of my buttocks. About 6 months after the procedure, I developed a large, painful bump on one side where the fat was injected. The Dr. stuck a needle into the bump and drained out a substantial amount of brown liquid. About 3 days after he drained it out, I developed another large bump on the same side. Is this normal?

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