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Cystic hygromas that develop in the third trimester, after 30 weeks' gestation, or in the postnatal period are usually not associated with chromosome abnormalities. A chance exists of recurrence after surgical removal of the cystic hygroma. The chance depends on the extent of the cystic hygroma and whether its wall was completely removed. [10]
A subdural hygroma (SDG) is a collection of cerebrospinal fluid (CSF), without blood, located under the dural membrane of the brain. Most subdural hygromas are believed to be derived from chronic subdural hematomas. They are commonly seen in elderly people after minor trauma but can also be seen in children following infection or trauma.
Cystic hygroma shares many commonalities with cavernous lymphangiomas, and some doctors consider them to be too similar to merit separate categories. However, cystic lymphangiomas usually have a softer consistency than cavernous lymphangiomas, and this term is typically the one that is applied to lymphangiomas that develop in fetuses.
The International Society for the Study of Vascular Anomalies (ISSVA) classification is a basic and systematic classification of vascular anomalies with international acceptance. As such terms such as "Lymphangioma" and "Cystic Hygroma", which were used widely in the past, are outdated.
Thyroglossal cyst usually presents as a midline neck lump (in the region of the hyoid bone) that is usually painless, smooth and cystic, though if infected, pain can occur. There may be difficulty breathing, dysphagia (difficulty swallowing), or dyspepsia (discomfort in the upper abdomen), especially if the cyst becomes large.
For masses presenting in adulthood, the presumption should be a malignancy until proven otherwise, since carcinomas of the tonsil, tongue base and thyroid may all present as cystic masses of the neck. [6] Unlike a thyroglossal duct cyst, when swallowing, the mass should not move up or down. [7]
Hygroma may refer to: Cystic hygroma; Subdural hygroma; Hygroma (canine disease) – swelling on or near a dog's elbow This page was last edited on ...
Infantile hemangioma is the most common vascular tumor. It is a benign tumor, which occurs in 4-5% of Caucasian infants, but rarely in dark skinned infants. [6] It occurs in 20% of low weight premature infants and 2.2 to 4.5 times more frequently in females. [7]