[Diagnosis and referral of musculoskeletal tumors].

Musculoskeletal tumors are uncommon. However, the true burden of all bone and soft tissue tumors of extremities is underestimated. Usually, the diagnosis of sarcomas is missed or delayed.

Polyostotic fibrous dysplasia (McCune-Albright) with rare multiple epiphyseal lesions in association with aneurysmal bone cyst and pathologic fracture.

Fibrous dysplasia, including McCune-Albright syndrome, is a genetic, non-inheritable benign bone disorder that may involve a single or multiple bone, typically occurring in the diaphysis or the metaphysis of long bones. In very rare instances polyostotic fibrous dysplasia present involvement of the epiphysis in long bones. Aneurysmal bone cysts are benign, expansile, lytic bone lesions formed by cystic cavities containing blood, that may occur de novo or secondary to other lesions of bone, including fibrous dysplasia.

[Magnetic resonance of the hands for the diagnosis and follow-up of rheumatoid arthritis].

Conventional radiography of hands has been the imaging technique used for the early diagnosis of rheumatoid arthritis, considering its easy access and ability to reveal structural damage. However, it does not provide information about inflammatory activity or prognosis of this disease. On the other hand, magnetic resonance imaging is becoming the technique of choice for the early diagnosis of this disease and for the assessment of treatment response.

Pediatric bone marrow MR imaging.

This article provides an overview of the current use of MR imaging in the evaluation of pediatric bone marrow disorders, illustrating their appearance on commonly used MR imaging sequences. Recognition of normal developmental bone marrow changes and variants is important in pediatric MR imaging interpretation, and in selection of appropriate acquisition sequences. This overview should serve as a practical aid in the interpretation of bone marrow lesions in children.

[Diagnosis of bone lesions using image guided percutaneous biopsy].

Background: Percutaneous biopsies have a good sensitivity and specificity for the diagnosis of bone lesions.

Aim: To report the experience with 270 percutaneous bone lesions biopsies guided with fluoroscopy or computed tomography.

Material And Methods: Retrospective review of the medical records of 270 patients (mean age 53.