A patient was implanted with a mitroflow lxa size 23 (sn (b)(4)) on (b)(6) 2013.At the time of implant the patient was (b)(6) years old.On (b)(6) 2016 the patient underwent to a re-operation for the replacement of the bioprosthesis due to degradation at the (b)(6) hospital.Based on the information available, the patient had pulmonary stenosis in the mitroflow valve (45-50 mmhg) with pulmonary regurgitation, right chamber enlargement and decreased right ventricle mobility.