Tumors and Tumor-like Lesions of the Joints Benign Lesions Synovial (Osteo)chondromatosis Synovial osteochondromatosis (also known as synovial chondromatosis or synovial chondrometaplasia) is an uncommon benign disorder marked by the metaplastic…
Fibrogenic, Fibroosseous, and Fibrohistiocytic Lesions Fibrogenic, fibroosseous, and fibrohistiocytic lesions of bone represent a clinical spectrum ranging from very innocent lesions requiring no treatment at all to highly malignant neoplasms…
Metastases Osseous Metastases Skeletal metastases are the most common variety of bone tumors and should always be considered in the differential diagnosis, particularly in older patients (47,65). In a series…
Round Cell Lesions Benign Lesions Langerhans Cell Histiocytosis (Eosinophilic Granuloma) Langerhans cell histiocytosis (LCH) is a lesion belonging to a group of disorders now classified by the World Health Organization…
Vascular Lesions Vascular lesions of bone constitute a spectrum of pathologic entities. These range from congenital vascular malformations, i.e., errors of morphogenesis with nonproliferative capacity, which grow in parallel with…
Radiologic and Pathologic Approach to Bone Tumors The ideal therapeutic goals for managing patients with primary or metastatic lesions can be incorporated into a triad of important factors: (a) do…
Immunization Vaccines rank among the greatest achievements of medicine and public health (Box 25.1). Jenner commenced the era of immunization when he induced protection against smallpox by inoculating susceptible persons…
Antibiotic Prophylaxis in Obstetrics and Gynecology Since the 1970s, a large body of data has accumulated to allow for the establishment of practical recommendations for use in many procedures. Quality…
Antimicrobial Agents Confronted with an extensive and expanding array of antibiotics, the clinician must be well versed in the use of antibiotics in the day-to-day care of patients. New developments…
Parasitic Disease in Pregnancy Parasitic infections include diseases caused by protozoa or helminths. These infections have a worldwide distribution with an estimated 30% of the world’s population experiencing parasitic infestations….
