The shadow of soft tissue swelling could only be seen by X-ray.

线早期仅有软组织肿胀阴影，个别可见结节样阴影。

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Periosteal reaction was usually absent but soft tissue swelling commonly occurred.

一般无骨膜反应，但可有软组织肿块。

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Periosteal reaction was usually absent but soft tissue swelling commonly occurred.

一般无骨膜反应，但可有软组织肿块。

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