DISK MASS (since near vertebral disc):
Degeneration (DJD, osteoporosis, spondylosis)
Infection (UTI, PID, Pott's disease, osteomyelitis, prostatitis)/ Injury, fracture or compression fracture
Spondylitis (ankylosing spondyloarthropathies such as rheumatoid arthritis, Reiters, SLE)
Kidney (stones, infarction, infection)
Multiple myeloma/ Metastasis (from cancers of breast, kidney, lung, prostate, thyroid)
Abdominal pain (referred to the back)/ Aneurysm
Skin (herpes zoster)/ Strain/ Scoliosis and lordosis
Slipped disk/ Spondylolisthesis / Spinal Stenosis / Strain
