title: Letter: Sacrococcygeal teratoma and "non-immunological" hydrops fetalis.
mesh_terms: D004487:Edema / Q000150:complications*; D005260:Female; D005315:Fetal Diseases / Q000150:complications*; D006801:Humans; D011247:Pregnancy; D012445:Sacrococcygeal Region; D013724:Teratoma / Q000150:complications*