case_images: PMC3861589_01
case_images: Computed tomography scan showing an irregularly shaped 12x10x10-cm expansion mass beside the 7th thoracic vertebra. Disappearance of the cortex and lytic changes in the 7th ribs are demonstrated. Atelectasis of the right lower lobe is also evident.
case_images: OL-07-01-0267-g00.jpg
case_images: PMC3861589_01_OL-07-01-0267-g00.jpg
case_images: f1-ol-07-01-0267
case_images: Atelectasis of the right lower lobe and pleural effusion were also observed in the CT (Fig. 1).
case_images: (A) Profile of the aneurysmal bone cyst, which originated from the 7th rib, during surgery. (B) Macroscopic appearance of the resected specimen.
case_images: OL-07-01-0267-g01.jpg
case_images: PMC3861589_01_OL-07-01-0267-g01.jpg
case_images: f2-ol-07-01-0267
case_images: Numerous blood-filled cysts protruded from the surface of the mass, and an abundant blood supply was observed in the margin of the tumor (Fig. 2).
case_images: Hemorrhagic areas within a cystic space (hematoxylin and eosin staining; magnification, x400).
case_images: OL-07-01-0267-g02.jpg
case_images: PMC3861589_01_OL-07-01-0267-g02.jpg
case_images: f3-ol-07-01-0267
case_images: All these pathological findings were consistent with those of an ABC (Fig. 3).