METAPHYSEAL CORTICAL DEFECT AND TUMOR-LIKE PROCESSES OF LONG BONES (A LITERATURE REVIEW AND OWN OBSERVATIONS).

Metaphyseal cortical defect (metaphyseal fibrous defect, cortical fibrous defect) of the long bones is a quite common variant of the bone structure's pathologic changes. The cortical defects and similar to their tumor-like processes (non-ossifying fibroma, benign fibrous histiocytoma etc.) are characterized by particular qualities of the clinical symptoms and radiologic signs. The aim of this article is to analyze a known literature data about cortical fibrous defects of long bones and similar to their tumor-like processes and present results of our own observations. We have observed 52 patients with different variants of bone lesions (metaphyseal cortical defect as the variant of pathological bone restructuring, local form of fibrous dysplasia, giant cell tumor, solitary done cyst, benign fibrous histiocytoma, non-ossifying fibroma). Complex clinical and radiologic differential diagnosis is based on a thorough study of the history findings, the degree of pain intensity and radiologic signs of pathological processes (location, sizes, number of destruction nodes as well as dynamics of changing). Revealed features along with histological verification undoubtedly influence on choice of medical tactics.