PURPOSE: To evaluate the usefulness of a knee osteoarthritis model through functional, radiological and microscopic changes of the synovial membrane. METHODS: Forty eight rats were divided randomly into two groups. The first received 0.9% saline in the joint and corresponded to the control group. The second was submitted to experimental osteoarthritis of the right knee induced by monosodium i...

Diagnosis of tumors of the kidney depends principally on clinical evaluation and radiologic studies. The role of the pathologist is most important in the classification and characterization of the tumors. In addition, morphologic studies employing the use of electron microscopy may aid in the understanding of histogenesis and the recognition of tumor sub-types. Electron microscopic evaluation i...