骨样骨瘤，X线可见跖骨骨皮质的小圆中央透亮区被硬化骨所包绕。
骨样骨瘤(显微镜)
This is the central nidus of an osteoid osteoma. Radiographically, there is a small round central lucent area in the metatarsal bone cortex surrounded by sclerotic bone.
