BONE TUMOURS
It can be daunting when faced with a bone lesion as the list of possible diagnoses is long.
Simple bone cyst Aneurysmal bone cyst Chondroma Osteochondroma Osteoblastoma Osteoid osteoma Chondroblastoma Periosteal chondroma Eosinophilic granuloma Non ossifying fibroma Brown tumor Chondromyxoid fibroma Giant cell tumour Fibrous Histiocytoma Fibrous dysplasia Osteoma Haemangioma Giant cell reparative granuloma Desmoplastic fibroma Ganglion PNET Adamantinoma Hemangioendothelioma Osteosarcoma Ewings PNET Chondrosarcoma Fibrosarcoma MM/Plasmacytoma Lymphoma Angiosarcoma
Fortunately, primary bone tumours tend to follow certain patterns and these can be used to narrow down the list
• Which bone is involved
• How old is the patient
• What are the characteristics of the lesion
The principal characteristics are: location within the bone, lytic or sclerotic, well or poorly defined and so forth
So begin by selecting the Which Bone? tab oposite, then explore the characteristics of the most common lesions to see if it fits with your case
Remember also that there are lesions that mimic primary bone tumours, so also explore the lists of multifocal lesions