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a-z health information - Disease

 

Cystic hygroma

Definition

A cystic hygroma is a growth that often occurs in the head and neck area. It is a birth defect.

Alternative Names

Lymphangioma

Causes, incidence, and risk factors

A cystic hygroma occurs as the baby grows in the womb. It forms from pieces of material that carry fluid and white blood cells. This material is called embryonic lymphatic tissue.

After birth, a cystic hygroma usually looks like a soft bulge under the skin. The cyst may not be found at birth. It typically grows as the child grows. Sometimes it is not noticed until the child is older.

Symptoms

A common symptom is a neck growth. It may be found at birth, or discovered later in an infant after an upper respiratory tract infection (like a cold).

Signs and tests

Sometimes, a cystic hygroma is seen using a pregnancy ultrasound, when the baby is still in the womb. This can mean that the baby has a chromosomal problem or other birth defects.

The following tests may be done:

  • Chest x-ray
  • Ultrasound
  • CT scan
  • MRI scan

If the cystic hygroma is detected during a pregnancy ultrasound, other ultrasound tests or amniocentesis may be recommended.

Treatment

Treatment involves removing all of the abnormal tissue. However, cystic hygromas can often grow, making it impossible to remove all of the tissue.

Other treatments have been tried with only limited success. These include:

  • Chemotherapy medications
  • Injection of sclerosing medications
  • Radiation therapy
  • Steroids

Expectations (prognosis)

The outlook is good if surgery can totally remove the abnormal tissue. In cases where complete removal is not possible, the cystic hygroma commonly returns.

The outcome may also depend on what other chromosomal abnormalities or birth defects, if any, are present.

Complications

Complications may include:

  • Bleeding
  • Damage to structures in the neck caused by surgery
  • Infection
  • Return of the cystic hygroma

Calling your health care provider

If you notice a lump in your neck or your child's neck, call your doctor.

References

Tower RL II, Camitta BM. Abnormalities of lymphatic vessels. In: Kliegman RM, Behrman RE, Jenson HB, Stanton BF, eds. Nelson Textbook of Pediatrics. 19th ed. Philadelphia, Pa: Saunders Elsevier; 2011:chap 483.

Wetmore RF, Potsic WP. Differential diagnosis of neck masses. In: Flint PW, Haughey BH, Lund LJ, et al, eds. Cummings Otolaryngology: Head & Neck Surgery. 5th ed. Philadelphia, Pa: Mosby Elsevier; 2010:chap 198.

Richards DS. Ultrasound for pregnancy dating, growth, and the diagnosis of fetal malformations. In: Gabbe SG, Niebyl JR, Simpson JL, eds. Obstetrics: Normal and Problem Pregnancies. 5th ed. Philadelphia, Pa: Elsevier Churchill Livingstone; 2007:chap 9.


Review Date: 8/12/2013
Reviewed By: Ashutosh Kacker, MD, BS, Associate Professor of Otolaryngology, Weill Cornell Medical College, and Associate Attending Otolaryngologist, New York-Presbyterian Hospital, New York, NY. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Bethanne Black, and the A.D.A.M. Editorial team.
The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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