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    Cystic hygroma

    Lymphangioma

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

    Causes

    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.

    Exams 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

    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 spread to other parts of the neck, 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

    Outlook (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.

    Possible Complications

    Complications may include:

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

    When to Contact a Medical Professional

    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.

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            Tests for Cystic hygroma

              Review Date: 8/31/2011

              Reviewed By: Linda J. Vorvick, MD, Medical Director, MEDEX Northwest Division of Physician Assistant Studies, University of Washington, School of Medicine; Seth Schwartz, MD, MPH, Otolaryngologist, Virginia Mason Medical Center, Seattle, Washington. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

              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. 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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