- A cystic hygroma is a localized, single or multiloculated, fluid-filled cavity that usually occurs in the neck.
- It is believed to develop secondary to congenital blockage of the lymphatic drainage.
- Cystic hygromas are seen in over one-third of fetuses with nonimmune fetal hydrops.
- Cystic hygromas have a high association with Turner's syndrome and trisomy syndromes 13, 18, and 21.
 Imaging Findings
- Cystic structure in neck.
 See Also
 External Links
- John R. Mernagh, Patrick T. Mohide, Raymond E. Lappalainen, and James G. Fedoryshin. US Assessment of the Fetal Head and Neck: A State-of-the-Art Pictorial Review. RadioGraphics 1999 19: 229-241.