A case of an aneurysmal bone cyst which occurred in the upper thoracic spine was reported.
The patient was a thirty-eight year old male, who was at first diagnosed as having a mediastinal neoplasm, accidentally on medical checkup. Close examination, MRI, CT, angiography etc, was performed, and finally biopsy by mediastinal scopy was done. The definite diagnosis was aneurysmal bone cyst. Lytic lesions of the second and third vertebral bodies and adhesion of the cyst wall with the esophagus were found during the surgery.
Appropriate treatment of the lesions consisted of curettage and iliac crest bone graft. After the operation, the patient had progressed favorably for seven months.
