摘要Background:The latissimus dorsi (LD) flap procedure remains a popular and useful breast reconstruction tool in China and Western countries,and donor site seroma formation is the main complication.This study was conducted in Chinese patients to determine whether stable cases of seromas would resolve without treatment.Methods:A retrospective review of 45 consecutive cases of immediate breast reconstruction with LD flap from April 2012 to February 2017 was conducted.The scope of the seroma was demarcated with a marker pen,and cases that remained stable over time (i.e.the size of the seroma did not increase) were observed without treatment.The measured outcomes included the incidence of seromas,the volume and duration of postoperative wound drainage,and other demographic characteristics.Results:Twenty-four patients (53.3％) developed a seroma at the donor site.Of these,21 patients (87.5％) did not require treatment,and the seroma resolved over time.The mean duration of a sustained seroma was 6.8 ± 1.4 weeks (range:4-9 weeks).Conclusions:This study observed the scope and progression of the seromas and found that seromas at the LD donor sites resolved over time without treatment.