<Li> Uncommonly, Niemann - Pick disease Type C (NPC) and Gaucher disease type 2 can present with hydrops fetalis . </Li> <Li> Tumors, the most common type of fetal tumor being teratoma, particularly a sacrococcygeal teratoma . </Li> <Li> Twin - twin transfusion syndrome in pregnancies in which twins share a single placenta (hydrops affects the recipient twin) </Li> <Li> Fetal cardiac defects and skeletal defects </Li>

Rh sensitization and probable fetal hydrops and anemia