LMs are structural abnormalities within the lymphatic system and the circulation of lymph. They can be microcystic (made of small pockets of lymphatic fluid) or macrocystic (made up of large pockets of lymphatic fluid) or both. LMs can be found anywhere on the body. LMs are often present at birth or appear in early childhood.

Superficial skin LMs look like small groups of skin colored bumps or blisters. Sometimes these bumps contain blood or clots and turn pink or purplish black. There may be swelling in the area. Deeper LMs usually present with a skin-colored swollen area. Common complications and symptoms of LMs inlcude disfigurement, infection, bleeding, and swelling.

The evaluation of a suspected LM includes a thorough examination by a doctor and an MRI. The MRI is very important for telling your doctor how deep the LM is and whether it is microcystic or macrocystic.

Depending on the type and location of the LM, treatment can include compression stockings, sclerotherapy, or surgical resection.