Radiology Key

Radiologic Evaluation of the Arthritides In its general meaning, the term arthritis indicates an abnormality of the joint as the result of a degenerative, inflammatory, infectious, or metabolic process (Fig….

Hyperparathyroidism Pathophysiology Hyperparathyroidism, also known as generalized osteitis fibrosa cystica or Recklinghausen disease of bone, is the result of overactivity of the parathormone-producing parathyroid glands. Increased production of this hormone…

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…

The Role of the Orthopedic Radiologist Spectacular progress has been made and continues to be made in the field of radiologic imaging. The introduction and constant improvements of new imaging…

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….

Miscellaneous Metabolic and Endocrine Disorders Familial Idiopathic Hyperphosphatasia Familial idiopathic hyperphosphatasia is a rare autosomal-recessive disorder affecting young children, generally within their first 18 months and exhibiting a striking predilection…

Radiologic Evaluation of Skeletal Anomalies Classification The conditions discussed in this part comprise disturbances in skeletal formation, development, growth, maturation, and modeling. Some of these anomalies arise during fetal development,…

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…

Osteoporosis, Rickets, and Osteomalacia Osteoporosis Osteoporosis is a generalized metabolic bone disease characterized by insufficient formation or increased resorption of bone matrix that results in decreased bone mass and microarchitectural…

Radiologic Evaluation of Musculoskeletal Infections Musculoskeletal Infections Infections of the musculoskeletal system can be subdivided into three categories: (a) those involving bones (osteomyelitis); (b) those involving joints (infectious arthritis); and…