What term describes abnormal interstitial accumulation of fluid in body cavities and soft tissues, with findings such as anasarca, ascites, pleural effusion, pericardial effusion, placentomegaly, and polyhydramnios?

• A. Hydrops fetalis
• B. Immune hydrops
• C. Nonimmune hydrops
• D. Anasarca

Answer: (A)

Hydrops fetalis describes abnormal interstitial fluid accumulation in the fetus, leading to edema in multiple compartments and associated effusions. The pattern you described—anasarca with ascites, pleural and pericardial effusions, placentomegaly, and polyhydramnios—fits this condition well. Hydrops fetalis is a broad term that includes both immune and nonimmune causes. Immune hydrops results from maternal antibodies (often Rh incompatibility) causing fetal anemia and high-output heart failure, while nonimmune hydrops has other etiologies such as fetal infections, chromosomal abnormalities, heart defects, or twins with volume imbalance. Anasarca is generalized edema, but it doesn’t alone capture the full fetal fluid-accumulation syndrome described here, whereas hydrops fetalis encompasses the whole pattern.