accessory tricuspid valve tissue https://www.malacards.org/card/accessory_tricuspid_valve_tissue MONDO:0019815 Accessory tricuspid valve tissue is a rare, congenital, atrioventricular valve malformation characterized by fixed or mobile accessory tissue on the tricuspid valve, usually associated with other complex congenital heart anomalies (atrial septal defect, ventricular septal defect, transposition of great arteries, tetralogy Fallot). It may present clinically with systolic murmur, dyspnea, cyanosis, depending also on accompanying congenital heart anomaly. MEDGEN:1798036 UMLS:C5566613 Orphanet:95462 GARD:0019264 congenital tricuspid malformation