Radiologic Evaluation of Tumors and Tumor-like Lesions Classification of Tumors and Tumor-like Lesions Tumors, including tumor-like lesions, can generally be divided into two groups: benign and malignant. The latter group…

Miscellaneous Arthritides and Arthropathies Connective Tissue Arthropathies An overview of the clinical and radiographic hallmarks of the forms of arthritis associated with connective tissue disorders is presented in Table 15.1….

Scoliosis and Anomalies with General Affliction of the Skeleton Scoliosis Regardless of its cause (Fig. 33.1), scoliosis is defined as a lateral curvature of the spine occurring in the coronal…

Imaging Techniques in Orthopedics Choice of Imaging Modality In this chapter, the principles and limitations of current imaging techniques are described. Understanding the basis of the imaging modalities available to…

Benign Tumors and Tumor-Like Lesions I: Bone-Forming Lesions Benign Bone-Forming (Osteoblastic) Lesions Bone-forming neoplasms are characterized by the formation of osteoid or mature bone directly by the tumor cells. They…

Malignant Bone Tumors II: Miscellaneous Tumors Fibrosarcoma and Malignant Fibrous Histiocytoma Fibrosarcoma and malignant fibrous histiocytoma (MFH) are malignant fibrogenic tumors that have very similar radiographic presentations and histologic patterns….

Paget Disease Pathophysiology Paget disease, a relatively common bone disorder, is a chronic, progressive disturbance in bone metabolism that primarily affects older persons. It is slightly more common in men…

Malignant Bone Tumors I: Osteosarcomas and Chondrosarcomas Osteosarcomas Osteosarcoma (osteogenic sarcoma) is one of the most common primary malignant bone tumors, comprising approximately 20% of all primary bone malignancies. There…

Benign Tumors and Tumor-like Lesions II: Lesions of Cartilaginous Origin Benign Chondroblastic Lesions Diagnosis of a bone lesion as originating from cartilage is usually a simple task for the radiologist….

Tumors and Tumor-Like Lesions of the Joints Benign Lesions Synovial (Osteo)Chondromatosis Synovial (osteo)chondromatosis (also known as synovial chondromatosis or synovial chondrometaplasia) is an uncommon benign disorder marked by the metaplastic…