hydrops fetalis (disease) GARD:0002301 GARD:0002783 HF HP:0001789 Hydrops fetalis is a severe and challenging fetal condition usually defined as the excessive accumulation of fetal fluid within the fetal extravascular compartments and body cavities that manifests as edema, pleural and pericardial effusion and ascites. It is the end-stage of a wide variety of disorders. The cause may be immunologic (immune hydrops fetalis, IHF) or non immunologic (non-immune hydrops fetalis, NIHF), depending on the presence or absence of maternal antibodies against fetal red cell antigens (ABO incompatibility or rhesus (Rh) incompatibility). ICD10:P56.0 ICD10:P56.9 ICD10:P83.2 MONDO:0015193 MedDRA:10020529 NCIT:C84767 Orphanet:1041 SCTID:276508000 UMLS:C0020305 familial non-immune hydrops fetalis fetal anasarca fetal edema fetal hydrops generalized fetal edema hydrops fetalis hydrops fetalis nonimmune idiopathic hydrops fetalis developmental defect during embryogenesis