- Background: Seroma is a well‐known complication of postoperative ventral hernia (POVH) repair. It occurs during the immediate postoperative period and usually resolves with or without drainage within 4–6 weeks. The case presented herein is interesting in that a huge seroma appeared 6 months postoperatively. Ten litres were evacuated in each of two consecutive hospitalisations. The final outcome was a complete recovery with no mesh infection and no residual seroma. Of interest are the diagnosis and treatment of this unusual clinical presentation of seroma after POVH repair.