CT features of traumatic bone cyst

Abstract

Objective To study the CT findings of traumatic bone cyst and to improve the knowledge of that disease. Methods CT features of 8 cases of traumatic bone cyst confirmed by clinical and pathology were reviewed retrospectively.There were 4 females and 4 males,from 26 to 76 years (the median age was 53 years old) of age.Three patients had traffic accidents,2 patients had trauma unrelated,1 patient had boulder crushing,1 had patient stick wounded and 1 patient had high jump wounding.The bone cyst occurred from 18 to 36 months after trauma (2 at 18 months,4 at 24 months,1 at 30 months and 1 case at 36 months). Results There were 6 fractures,1 joint dislocation and 1 frontal soft tissue hematoma in trauma.The cyst located in the ilium of 3 cases,in the calcaneus of 2 cases,in the frontal bone of 1 case,in the hooked bone of 1 case,in the lunate bone of 1 case.The cyst size was 2.0 cm×2.6 cm to 3.0 cm×6.0 cm (average 2.7 cm×4.0 cm).8 cases all single capsule change,all clear boundaries.6 cystic destruction and 2 cystic expansion destruction of bone.Two see separated and 6 no divider of the cyst region.Five bone sclerosis and 3 no hardening of the cyst edge.Three sclerosis and Five no sclerosis of the adjacent bone.Four osteoporosis decalcification and 4 no osteoporosis decalcification of he adjacent bone. Conclusion The traumatic bone cyst is closely related to trauma,CT manifestations with certain characteristics,combined with a history of trauma can make a definite diagnosis. Key words: Bone cysts; Wounds and injuries; Tomography,X-ray computed