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Xanthoma

Skin growths - fatty; Xanthelasma

Xanthoma is a skin condition in which certain fats build up under the surface of the skin.

Causes

Xanthomas are common, especially among older adults and people with high blood lipids (fats). Xanthomas vary in size. Some are very small. Others are bigger than 3 inches (7.5 centimeters) in diameter. They may appear anywhere on the body. But, they are most often seen on the elbows, joints, tendons, knees, hands, feet, or buttocks.

Xanthomas may be a sign of a medical condition that involves an increase in blood lipids. Such conditions include:

Xanthelasma palpebra is a common type of xanthoma that appears on the eyelids. It usually occurs without any underlying medical condition.

Symptoms

A xanthoma looks like a yellow to orange bump (papule) with defined borders. There may be several individual ones or they may form clusters.

Exams and Tests

Your health care provider will examine the skin. Usually, a diagnosis can be made by looking at the xanthoma. If needed, your provider will remove a sample of the growth for testing (skin biopsy).

You may have blood tests done to check lipid levels, liver function, and for diabetes.

Treatment

If you have a disease that causes increased blood lipids, treating the condition may help reduce the development of xanthomas.

If the growth bothers you, your provider may remove it by surgery or with a laser. However, xanthomas may come back after surgery.

Outlook (Prognosis)

The growth is noncancerous and painless, but may be a sign of another medical condition.

When to Contact a Medical Professional

Call your provider if xanthomas develop. They may indicate an underlying disorder that needs treatment.

Prevention

To reduce the development of xanthomas you may need to control your blood triglyceride and cholesterol levels.

References

Habif TP. Cutaneous manifestations of internal disease. In: Habif TP, ed. Clinical Dermatology: A Color Guide to Diagnosis and Therapy. 6th ed. Philadelphia, PA: Elsevier; 2016:chap 26.

Massengale WT. Xanthomas. In: Bolognia JL, Schaffer JV, Cerroni L, eds. Dermatology. 4th ed. Philadelphia, PA: Elsevier; 2018:chap 92.

White LE, Horenstein MG, Shea CR. Xanthomas. In: Lebwohl MG, Heymann WR, Berth-Jones J, Coulson I, eds. Treatment of Skin Disease: Comprehensive Therapeutic Strategies. 5th ed. Philadelphia, PA: Elsevier Saunders; 2018:chap 256.

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  • Xanthoma, eruptive - close-up - illustration

    Xanthomas are firm, raised waxy-appearing papules or bumps, which may occur on the truck, arms, and legs, and may be skin-colored, pink, or even yellow. The presence of this type of skin lesion may be associated with abnormal levels of lipids, or fats, in the blood.

    Xanthoma, eruptive - close-up

    illustration

  • Xanthoma - close-up - illustration

    Xanthomas are lesions on the skin containing cholesterol and fats. They are often associated with inherited disorders of lipid metabolism (inherited problems with the way that fats are broken down and used).

    Xanthoma - close-up

    illustration

  • Xanthoma - close-up - illustration

    Xanthomas are raised, waxy-appearing, frequently yellowish-colored skin lesions. They may be associated with an underlying lipid (cholesterol/triglyceride) abnormality.

    Xanthoma - close-up

    illustration

  • Xanthoma on the knee - illustration

    Xanthomas are raised, waxy-appearing, frequently yellowish-colored skin lesions, seen here on the knee. These may be associated with an underlying lipid (cholesterol/triglyceride) abnormality.

    Xanthoma on the knee

    illustration

  • Xanthoma, eruptive - close-up - illustration

    Xanthomas are firm, raised waxy-appearing papules or bumps, which may occur on the truck, arms, and legs, and may be skin-colored, pink, or even yellow. The presence of this type of skin lesion may be associated with abnormal levels of lipids, or fats, in the blood.

    Xanthoma, eruptive - close-up

    illustration

  • Xanthoma - close-up - illustration

    Xanthomas are lesions on the skin containing cholesterol and fats. They are often associated with inherited disorders of lipid metabolism (inherited problems with the way that fats are broken down and used).

    Xanthoma - close-up

    illustration

  • Xanthoma - close-up - illustration

    Xanthomas are raised, waxy-appearing, frequently yellowish-colored skin lesions. They may be associated with an underlying lipid (cholesterol/triglyceride) abnormality.

    Xanthoma - close-up

    illustration

  • Xanthoma on the knee - illustration

    Xanthomas are raised, waxy-appearing, frequently yellowish-colored skin lesions, seen here on the knee. These may be associated with an underlying lipid (cholesterol/triglyceride) abnormality.

    Xanthoma on the knee

    illustration

 

Review Date: 4/16/2019

Reviewed By: Michael Lehrer, MD, Clinical Associate Professor, Department of Dermatology, University of Pennsylvania Medical Center, Philadelphia, PA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

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