What is (are) Gorham's disease ?
Gorham's disease is a rare bone disorder that is characterized by bone loss (osteolysis), often associated with swelling or abnormal blood vessel growth (angiomatous proliferation). Bone loss can occur in just one bone, or spread to soft tissue and adjacent bones. It may affect any part of the skeleton, but most commonly involves the skull, shoulder, and pelvis. The cause of Gorham's disease is currently unknown.  Most cases occur randomly. Treatment is based on the signs and symptoms present in each affected person, and most commonly involves surgery and/or radiation therapy. In some cases, Gorham's disease improves without treatment (spontaneous remission).