Clinic, diagnosis and treatment of chondroblastoma in children

It is for the first time that the clinical picture, diagnosis and outcomes of surgical treatment of bone chondroblastoma in children (85 patients, aged 8—16) are described in native literature. Pathological focus was localized in the epiphysis and metaepiphysis of long bone predominantly. Clinical manifestations were pain syndrome, restriction of movement and development of contracture in the adjacent joint. Typical radiological signs included excentrically located osteolytic locus of destruction with speckled inclusions and clear contour. The locus was separated by sclerosis line and periostal stratums were present in the distance from the locus. CT, MRT and angiographic examination enabled to determine the destructive locus at early stages of its development and to differentiate with other tumors, inflammatory diseases and dystrophic processes. In all cases diagnosis was verified morphologically. All patients underwent surgery. In the majority of cases periarticular subchondral resection with cavity electrocoagulation and alloplasty of the defect was performed. In case of articular cartilage destruction intracapsular marginal or segmental resection followed by allo- or autoplasty of the defect was carried out. Recurrences were observed in 8,2%) of cases. In 8 patients shortening or deformity of limb developed as a result of growth zone damaged caused by pathological process and surgical intervention. Those problems were eliminated by additional surgery.