Osteoid Osteoma Diagnosis

Osteoid osteoma is confirm diagnosed by clinical manifestations, histology and radiology examination. If the young adults or children can not explain the continued presence of pain, need to diagnosis for Osteoid osteoma.

Osteoid osteoma diagnosis is mainly X-ray examination and CT.

1, X-ray findings: The most common disease in the femoral neck and proximal tibia. However, any bone can be involved. Typical X-ray findings is surrounded by dense bone of the small lesions, the majority of a diameter less than 1cm, the central density was smaller transmission line area, may have varying degrees of calcification. A small number of cases have more than one lesion, but many lesions may be different from the above description, but also there is no evidence that the location and with the onset of the disease period. Arteriography may be passed to and chronic bone abscesses, acute or chronic osteomyelitis, isolated enostosis, aseptic necrosis, osteochondritis to identify. Although the performance of congestive osteomyelitis, but the vascular patterns of normal or slightly expanding, there is no flush of osteoid osteoma of the phenomenon. Abscess and bone necrosis aseptic necrosis of the Center for the avascular zone performance. There are several main types of performance:

1) cortical osteoid osteoma:
A small region of the transmission line, is surrounded by dense bone, lesions located in the cortex, the hardened ring more clearly. Periosteal reaction, or into a layer or the real homology. Late in the disease, lesions can be completely hidden.

2) cancellous bone osteoid osteoma:
Most commonly in the neck, followed by a small hand-foot-bone and vertebral body. Often without a lot of focus around the new bone formation, but the increase in bone density ring enveloping the lesion. Occasionally react in the distance of new bone formation.

3) subperiosteal osteoid osteoma:
Usually near the bone Qualcomm soft tissue mass, the most commonly found in the inside neck and hand and foot. Below the bone lesions are fan-shaped region, or by the shrinkage of bone resorption caused by oppression. Lesions near the joints, the non-response of bone formation, but the relevant section of swelling, hyperemia and pain. The performance characteristics of acute synovitis. Apart from the obvious joints at both ends of demineralized bone, there is no other change. There is evidence that spontaneous regression of the disease can be, but necessary as a long time.

2, CT performance: CT scan is the thin layer of osteoid osteoma shows that the best way, than the X-ray and MRI can more accurately show the tumor nests. Can be diagnosed by X-ray diagnosis of suspected cases could not, in particular, apply to joint capsules, spinal and other parts of the complex anatomical structure.