Other non-spinal causes include trauma to the leg and pelvic tumors, which can damage or compress the nerve directly.
其他非脊柱病因包括腿部创伤、盆腔肿瘤等，这些都可直接损伤或压迫坐骨神经。
英语百科
Pelvic tumor
A pelvic tumor is any one of numerous tumors that occur in the pelvis. Within the pelvis, these tumors may involve specific organs, or occupy intra-organ spaces. Tumors of the presacral space and sacral space are most prevalent in children. Tumors occupying specific organs have a more complex natural history.