Lumbar tumors include renal tumors, lumbar spine tumors and so on. 1. Renal tumors: benign tumors occurring in kidney such as vascular smooth muscle lipoma, reninoma, renal adenoma of kidney; malignant tumors of kidney such as clear cell carcinoma, papillary renal cell carcinoma, and so on. Kidney tumor may have symptoms such as abnormal urination, hematuria, lumbar pain, mass in waist or abdomen, which need ultrasound and CT examination. 2. Lumbar spine tumor: tumors occurring in lumbar spine include epidural tumors such as epidural angiomyolipoma, subdural tumors such as nerve sheath tumor, chordoma, etc. Vertebral tumors. Tumors on the lumbar spine may present with severe pain, especially pain at night, and the tumor compresses the nerve roots leading to radicular pain, leg pain, weakness of both lower limbs and even urinary or fecal disorders, etc. Normally, MRI of the lumbar spine is needed. There are many other tumors in the lumbar region, both benign and malignant, which need to be further examined and comprehensively evaluated in the hospital, and must not be neglected to avoid delaying the condition.