Practice questions answers bone tumors
Practice questions answers Bone tumors © Jun Wang, MD, PhD 1. C. Key diagnostic features of osteoid osteoma include small size, clear margin and benign bone formation. Aneurysmal bone cyst is composed of non-endothelial lined blood filling space. Osteoblastoma has microscopic features identical to osteoid osteoma , but it is different in clinical presentations, size, bone involved, etc. Osteomyelitis has inflammation and bone necrosis. Osteosarcomas are malignant tumor with bone production. Microscopically they are pleomorphic malignant cells. Radiologically they have destruction appearance. 2. D. Osteoblastoma has microscopic features identical to osteoid osteoma , but it is different in clinical presentations, size, bone involved, etc. Ewing sarcomas are composed of sheets of small cells with round nuclei. Giant cell tumors have numerous multinucleated cells. Metastatic cancers have epithelial components similar to primary tumors. Osteosarcomas are malignant tumo...