盆骨坐骨软骨肉瘤。此肿瘤由穿透皮质的分叶状亮白、蓝白组织组成。一般而言，远端的软骨肿瘤（如手指）为良性，而出现于中轴骨骼的软骨肿瘤为恶性。)

软骨肉瘤：坐骨(肉眼) 盆骨(肉眼) 右髂骨翼X线 CT 低倍镜 高倍镜

Here is a chondrosarcoma involving the ischium of the pelvis. The tumor is composed of lobulated glistening white to bluish-white tissue that breaks through the cortex. In general, peripheral cartilagenous tumors (e.g., fingers) are benign and those arising in the central axial skeleton are malignant.