Objective:To evaluate the incidence and clinical relevance of anatomical variations of the inferior phrenic arteries(IPA)based on computed tomography angiography(CTA)and digital subtraction angiography(DSA).Methods:A comprehensive search was conducted across multiple data-bases(PubMed,Web of Science,Scopus,Embase,Google Scholar,CBM,CNKI,WanFang,VIP,and Baidu Scholar)to include literature related to both left and right IPA.Meta-analysis was performed u-sing the Stata 17.0 software.Results:A total of 19 studies encompassing 6754 patients were included.The pooled incidence of common trunk and independent origin of the IPA were 29.4％(95％CI:24.8％～34.2％)and 70.6％(95％CI:65.8％～75.2％),respectively.The most common origins of the IPA common trunk were the abdominal aorta and celiac trunk,with pooled incidences of 48.2％(95％CI:42.4％～54.1％)and 49.0％(95％CI:43.3％～54.7％),respectively.For separate origins of RIP A,the abdominal aorta and celiac trunk were also the most common,with a pooled prevalence of 40.9％(95％CI:36.7％～45.3％)and 34.8％(95％CI:30.7％～38.9％),respectively.Similarly,for separate origins of LIPA,the celiac trunk and abdominal aorta were the most prevalent,with a pooled preva-lence of 58.5％(95％CI:53.2％～63.7％)and 32.6％(95％CI:27.3％～38.1％),respectively.Conclu-sion:The anatomical variations of IPA origins are highly diverse.Awareness with these variations is of great clinical significance for interventional radiologists,gastroenterologists,surgeons,and trauma spe-cialists.
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