Thank you for your question.Genital oedema (swelling) is relatively common following Vaser liposuction on abdomen. In men it will cause scrotal swelling and in women -labia major.This is due to the fact that normal tissue drainage is 'clogged' up by swollen abdominal area and the groin lymphatic drainage ports which serve both abdomen and genital regions become overwhelmed by 'extra work' they need to do.Normally it settles after 2-3 days without any interventions but wearing support underwear and elevating legs while in bed considered to be helpful. No drainage is normally required but massaging groin lymphatic glands can help.Consult your surgeon for advise.