在超过 80% 的病例中,腹腔脓肿 (IAA) 源自于腹内器官,大部分在手术后出现。[6]Lagana D, Carrafiello G, Mangini M, et al. Image-guided percutaneous treatment of abdominal-pelvic abscesses: a 5-year experience. Radiol Med. 2008;113:999-1007.http://www.ncbi.nlm.nih.gov/pubmed/18795233?tool=bestpractice.com估计约有 70% IAA 发生于术后[6]Lagana D, Carrafiello G, Mangini M, et al. Image-guided percutaneous treatment of abdominal-pelvic abscesses: a 5-year experience. Radiol Med. 2008;113:999-1007.http://www.ncbi.nlm.nih.gov/pubmed/18795233?tool=bestpractice.com6% 接受结直肠手术的患者将发生术后 IAA。[7]Lawson EH1, Ko CY, Adams JL, et al. Reliability of evaluating hospital quality by colorectal surgical site infection type. Ann Surg. 2013;258:994-1000.http://www.ncbi.nlm.nih.gov/pubmed/23657082?tool=bestpractice.com肝脓肿占所有 IAA 病例的 13%。[8]Altemeier WA, Culbertson WR, Fullen WD, et al. Intra-abdominal abscesses. Am J Surg. 1973;125:70-79.http://www.ncbi.nlm.nih.gov/pubmed/4566907?tool=bestpractice.com大部分肝脓肿累及右叶,很可能是由于右叶体积大,因此血液供应更充足导致。