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Aneurysmal bone cyst of the sternum: a case report of successful treatment with radiotherapy

A A Yavuz, MD¹, M ener, MD², M N Yavuz, MD¹, P Kosucu, MD³ and U Cobanoglu, MD⁴

Departments of ¹ Radiation Oncology, ² Orthopaedic Surgery, ³ Radiology, and ⁴ Pathology, Karadeniz Technical University Hospital, Trabzon, 61080, Turkey

View larger version (74K): [in a new window]   Figure 1. (a) Lateral radiograph demonstrates an expanding, lytic lesion involving the manubrium sterni (arrows). (b) CT scan showing a well-defined, expansive cystic lesion in the manubrium. Note the anterior cortex is thin but not destroyed (arrow).

View larger version (97K): [in a new window]   Figure 2. (a) Histological examination revealed large, cavernous spaces filled with blood (haematoxylin and eosin x 40). (b) Fibrous septae containing histiocytes, multinucleated giant cells, inflammatory cells and foci of osteoid beside the blood-filled spaces (haematoxylin and eosin x 400).

View larger version (66K): [in a new window]   Figure 3. 46 months after radiotherapy, (a) a lateral radiograph and (b) CT scan demonstrated a significant regression and sclerosis of the sternal mass. Note the thymus regressed due to irradiation.