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Anevrizmalny cyst of a bone


Anevrizmalny cyst of a bone — the destructive injury of a bone (perhaps, forms because of local hemodynamic frustration) which is characterized by reactive growth of the connecting fabric containing the cavities filled with liquid blood. Develops at any age, but generally at children and teenagers — to 80% of patients 30 years and more than 50% of patients at the age of 10 - 20 years are younger. Any bone, the most frequent localization can be surprised: backbone bones, then distal department femoral and proximal departments of tibial and humeral bones, pelvic bones.

Symptoms of the Anevrizmalny brush of a bone:

Amplifying with time and at exercise stresses of pain; pathological changes are possible.

Radiological reveal excentricly located lytic center of a marrowy cavity of a metaphysis; the sclerosed edges, periosteal reaction.

Patomorfologiya.  Macroscopically fabric of a gemorragichn, brown color, contains cysts with not turned blood.

Microscopy. Cavernous spaces limit the partitions of fibrogistiotsitarny fabric containing osteoklastopodobny cells, bone beams of various degree of a maturity, the sharing fibroblasts and osteoblasts, hemorrhages, hemosiderin grains numerous mitotic.

Аневризмальная киста большеберцовой кости (рентгенограмма)

Anevrizmalny cyst of a tibial bone (roentgenogram)

Аневризмальная киста II поясничного позвонка (рентгенограмма)

Anevrizmalny cyst of the II lumbar vertebra (roentgenogram)

Reasons of the Anevrizmalny brush of a bone:

The disease meets at men a little more often. The secondary anevrizmalny cyst (to 30% of cases) forms against the background of earlier preexisting damage of a bone, most often develops at a hondroblastoma, a giant-cell tumor, a fibrous dysplasia, chondromyxoid fibroma; at malignant new growths — an osteosarcoma, a carcinoma metastasis. Distinctive feature of an anevrizmalny cyst of a bone — distribution of pathological process to the next bones (backbone bones — to 12% of cases are more often) and through an epiphyseal plate of growth.

Treatment of the Anevrizmalny brush of a bone:

Regional resection of a bone with the pathological center and plastics of defect.

The outcome is favorable; often recurs — up to 50% of cases at a curettage.

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