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Bicuspid aortic valve is the most common, but more rarely, unicuspid and quadricuspid aortic valves can be seen.<\/jats:p><jats:p>Here, a case of a 16-year-old male with a unicommissural unicuspid aortic valve and a case of a 13-year-old female with a quadricuspid aortic valve were reported.<\/jats:p>","DOI":"10.1017\/s1047951121001153","type":"journal-article","created":{"date-parts":[[2021,3,31]],"date-time":"2021-03-31T09:34:09Z","timestamp":1617183249000},"page":"1538-1541","update-policy":"https:\/\/doi.org\/10.1017\/policypage","source":"Crossref","is-referenced-by-count":2,"title":["Unicuspid and quadricuspid aortic valves: two case reports and literature review"],"prefix":"10.1017","volume":"31","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2595-9213","authenticated-orcid":false,"given":"Eyup","family":"Aslan","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"56","published-online":{"date-parts":[[2021,3,31]]},"reference":[{"key":"S1047951121001153_ref8","doi-asserted-by":"publisher","DOI":"10.1093\/ehjci\/jex344"},{"key":"S1047951121001153_ref19","doi-asserted-by":"crossref","first-page":"25","DOI":"10.3941\/jrcr.v8i11.2277","article-title":"The quadricuspid aortic valve","volume":"8","author":"Franco","year":"2014","journal-title":"J Radiol Case Rep"},{"key":"S1047951121001153_ref4","doi-asserted-by":"publisher","DOI":"10.1093\/ejcts\/ezx324"},{"key":"S1047951121001153_ref10","doi-asserted-by":"publisher","DOI":"10.1053\/jcpa.1998.0299"},{"key":"S1047951121001153_ref11","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9149(73)90332-9"},{"key":"S1047951121001153_ref2","doi-asserted-by":"publisher","DOI":"10.1111\/chd.12520"},{"key":"S1047951121001153_ref9","first-page":"26","article-title":"Unicuspid aortic valve replacement with development of complete heart block: a case report","volume":"3","author":"Armstrong","year":"2019","journal-title":"Eur Heart J Case Rep"},{"key":"S1047951121001153_ref5","doi-asserted-by":"publisher","DOI":"10.1017\/S1047951114001942"},{"key":"S1047951121001153_ref3","first-page":"87","article-title":"Congenital quadricuspid aortic valve with displacement of the left coronary orifice","volume":"14","author":"Robicsek","year":"1968","journal-title":"Coll Works Cardiopulm Dis"},{"key":"S1047951121001153_ref25","doi-asserted-by":"publisher","DOI":"10.1080\/14779072.2020.1811685"},{"key":"S1047951121001153_ref7","doi-asserted-by":"publisher","DOI":"10.1161\/CIRCULATIONAHA.119.041835"},{"key":"S1047951121001153_ref13","doi-asserted-by":"publisher","DOI":"10.1161\/CIRCULATIONAHA.115.017743"},{"key":"S1047951121001153_ref21","doi-asserted-by":"publisher","DOI":"10.1016\/j.repc.2011.09.007"},{"key":"S1047951121001153_ref1","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-5223(19)34382-X"},{"key":"S1047951121001153_ref23","doi-asserted-by":"publisher","DOI":"10.1186\/s13256-019-2239-9"},{"key":"S1047951121001153_ref24","doi-asserted-by":"publisher","DOI":"10.1002\/jcu.22495"},{"key":"S1047951121001153_ref18","first-page":"145","article-title":"Tetralogy of Fallot with quadricuspid aortic valve","volume":"61","author":"Maheshwari","year":"2013","journal-title":"J Assoc Physicians India"},{"key":"S1047951121001153_ref22","doi-asserted-by":"publisher","DOI":"10.1016\/j.ijcard.2016.04.142"},{"key":"S1047951121001153_ref17","doi-asserted-by":"publisher","DOI":"10.1007\/s10396-005-0037-z"},{"key":"S1047951121001153_ref12","doi-asserted-by":"publisher","DOI":"10.1007\/BF02913511"},{"key":"S1047951121001153_ref6","doi-asserted-by":"publisher","DOI":"10.3389\/fcvm.2014.00014"},{"key":"S1047951121001153_ref15","doi-asserted-by":"publisher","DOI":"10.1002\/clc.20630"},{"key":"S1047951121001153_ref20","first-page":"679","article-title":"A rare aortic valve congenital abnormality in association with coarctation of the aorta","volume":"24","author":"Agrawal","year":"2015","journal-title":"J Heart Valve Dis"},{"key":"S1047951121001153_ref16","doi-asserted-by":"publisher","DOI":"10.5603\/KP.2013.0112"},{"key":"S1047951121001153_ref14","first-page":"203","article-title":"Quadricuspid aortic valve with atrial septal defect; 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