I just had a lipoma removed and the surgeon said it had several smaller lipomas and one larger 3x 5cm. Should I be worried?

Not necessarily.  Assuming it is a benign growth (most are; the specimen was presumably sent to Pathology for examination) it is not uncommon to have a lobulated growth or even multiple apparently discrete lipomas in what appear to be a single location.  For that reason it is important to check and recheck the surgical site (this is something the surgeon should do - not you!) even after one lipoma has been removed to try to avoid precisely this situation.  The main thing, though, is assuring that the Pathology is benign.I hope that this helps and good luck,Dr. Alan EnglerMember of RealSelf100