Table 1.

Patient characteristics by lesion type

Lesion type	Mean patient age (yr)	Range patient age (yr)	Male (%)
Benign cystic lesions (n = 42)	63.2	36-92	69.0
Hemangioma (n = 29)	68.5	47-88	55.2
Bone infarct (n = 16)	58.7	33-74	62.5
Bone island (n = 56)	63.0	37-90	50.0
Enchondroma (n = 45)	64.6	52-84	46.7%
Fibrous dysplasia (n = 26)	56.1	28-86	76.9
Osteochondroma (n = 6)	61.3	43-80	100.0
Paget’s disease of bone (n = 20)	73.4	59-86	80.0
Insufficiency fracture (n = 32)	69.1	47-89	6.3
Osteomyelitis (n = 15)	62.8	32-83	73.3

Benign cystic lesions: Subchondral cysts, bone cysts, herniation pits, and geodes.