Table 1.

Classification of idiopathic osteolyses [1].

Type 1: Hereditary multifocal osteolyses with dominant inheritance
Type 2: Hereditary multifocal osteolyses with recessive inheritance
Type 3: Nonhereditary multifocal osteolyses with nephropathia
Type 4: Gorham-Stout syndrome
Type 5: Winchester syndrome