Bone amyloidoma in a diabetic patient with morbid obesity

Bone localisations of amyloidosis are rare, usually diffuse and associated with myeloma. We report the case of a patient with massive obesity complica ted by diabetes, hypertension, sleep apnea and liver steatosis, who complai ned of rapidly worsening bilateral polyradiculalgia of the lower limbs. Aft er sufficient weight loss made nuclear magnetic resonance imaging feasible, a spinal tumour was visualised on the 5th lumbar vertebra, extending to so ft tissues. Total excision was performed, and pathological studies revealed an amyloid bone tumour with no evidence of myeloma.