The diagnosis Osteoma

Osteoma mass, hard or tough hard, state clearly that base and bone adhesion and pushed the inalienable.
A benign tumor osteoma slow growth to a certain age can stop growth more generally without subjective symptoms. If the masses are too large, then there deformities, or oppression adjacent tissues and organs, a corresponding symptoms. But no distant metastasis.
Second, the rapid increase of malignant tumors, and even a huge mass of hard sudden high. The local skin show, in addition to local deformity, pain, dysfunction, and has gradually worsened systemic symptoms like fever and no rebate, reducing diet, body weight loss and looking, etc.. More vulnerable to the organ or its transfer.
Auxiliary inspection: X-ray, see benign tumor boundaries clear, normal bone tissue with a clear dividing line between the generally no periosteal reaction. Osteoma see malignant tumor borders unclear, bone damage, bone structure disorder.