MRCP2-4600

MRCP2-4600

A 50-year-old woman with insulin-dependent diabetes complains of increasing lower back pain over the past two days. The pain is severe, causing her to lose sleep at night. Upon examination, her temperature is 37.8°C, pulse is 105/min, and blood pressure is 110/70 mmHg. The heart, lungs, and abdomen appear normal, but she experiences tenderness on the T12 vertebra. Blood tests reveal a low Hb level of 108 g/L (normal range: 115-165), high WBC count of 19.9 ×109/L (normal range: 4-11), 94% neutrophils (normal range: 40-75), high platelet count of 380 ×109/L (normal range: 150-400), high ESR of 90 mm/hr (normal range: 0-20), and high CRP of 200 mg/L (normal range: <10). A chest x-ray, thoracic spine x-ray, and urine dipstick test all appear normal. What is the diagnosis?