What is the aneurysm bone cyst

Aneurysm bone cyst of the bone disease is partial vein thrombosis. Arteriovenous produced a partial persistent obstacles to force the blood, venous pressure arising from continuing extremely high, the expansion of blood vessels, bone resorption and stimulate involvement of reactive repair a cyst, cyst size, with clear boundaries around the bone, for the capsule wall Reaction of the thin layer of the cystic bone shell, outward expansion. Cyst from the size of the housing sharing component. Aneurysm bone cyst course of slow, the rapid development of a small number of cases, in a few months have increased, mainly for local discomfort, pain and swelling. Less pain, exercise or exertion after the increase. Disease and around joints, there is dysfunction. Lesion in the spine, the oppression of the spinal cord or nerve root, such as Yaoteng, lower limb atrophy, incontinence, and even paraplegia, and so on. Disease occurred in long bones, local swelling, quality hardware, not, not obvious tenderness or only slight tenderness. Rational illness was only a small number of fractures found that some local performance for the continuing pain, skin temperature, shiny, superficial vein Nuzhang. Or even a similar tumor. Aneurysm bone cyst: 1. Osteolytic period of performance: the edge of a purely local bone destruction. A slight expansion, the spacing was not obvious. 2. Cyst stage of the disease was obviously eccentric expansion, the region that the disease interval. Into the soft tissue lesions, a shell wrapping. 3. Calcification or ossification period, lesions in the region that the dot-scattered, small or ossification Ban Kuaizhuang phenomenon. Aneurysm multiple bone cyst in the 11-30 years old, men more than women. Of long bones, spine for the good of the site. Especially in the top of the femur多见. Clinical performance does not apply to local, minor pain and swelling. Because the location vary. Metaphysis or long bone in the backbone of the disease, the local expansion of the inflatable kind lucent area. There are trabecular bone or bone ridge interval. Chen Shui-bian in spinal and bone diseases, but also for the expansion of the transmission area. Differential Diagnosis: 1. Solitary bone cyst: more common in limbs, long bones, often central, symmetry was mild swelling of the bone necrosis, with around for the dense sclerosis. Outer wall smooth and tidy, not just within the margin of the whole. With the growth of bones gradually shift to the backbone, often pathological fractures and found. 2. Giant cell tumor: age of onset larger, more lesions in the long bone side of the joint below the joint surface of the tumor often as part of contour, the tumor longitudinal, almost rampant growth, the tumor Duocheng spherical. Of the shadow of a soap bubble. Sclerosis and bone ossification reaction rare phenomenon. The aneurysm bone cyst incidence lighter, more lesions in the metaphysis, very few violations of the epiphysis. Often have different levels of bone hardening phenomenon. 3. Nonossifying fiber of regular violations of cortical bone, spread along the backbone, with the fronds, the edge of a hardening phenomenon. Sometimes the edge is incomplete, or even a bone fracture. 4. Chondromyxoid fibroma more common in young people, eccentric growth, the fronds, and a housing sharing kind. Into the soft tissue, have no cladding. Destruction of the region and a dot-spot patchy calcification.