Factors that can increase the risk that liver hemangioma will cause signs and symptoms include:

- Your age. Liver hemangioma can be diagnosed at any age, but it's most commonly diagnosed in people ages 30 to 50.

- Your sex. Women are more likely to be diagnosed with liver hemangioma than men are. - Pregnancy. Women who have been pregnant are more likely to be diagnosed with a liver hemangioma than women who have never been pregnant. It's believed the hormone estrogen, which rises during pregnancy, may play a role in liver hemangioma growth.

- Hormone replacement therapy. Women who used hormone replacement therapy for menopausal symptoms may be more likely to be diagnosed with liver hemangioma than women who did not.