our material consisted of 16 patients with common tumours ( 3 ewing 's sarcoma , 5 aneurysmal bone cyst , 6 osteoid osteoma and 2 epidermoid cyst ) and 5 patients with uncommon tumours ( osteoma , simple bone cyst , haemangiopericytoma , capillary angiomatous tumour and benign ossifying fibroma or osteoblastoma ) .
C0029441
osteoid osteoma
C0029440
osteoma