A 28-year-old woman at 34 weeks of gestation with severe pain in her right buttock radiating down the backside of the right thigh was admitted to a hospital. The pain was worsened during daily activities and she became almost restricted to the bed. Her bladder and bowel functions were normal. Laboratory findings were as follows: Hemoglobin levels 11.3 g/dL Platelets 180 × 109/L Increased white blood cell (WBC) count of 14.16 K/uL Increased erythrocyte sedimentation rate (ESR) of 30 mm/h Increased C-reactive protein (CRP) level of 14.1 mg/dL (normal range: 0.0–8.1 mg/L).
Blood cultures taken for persistent fever were negative (36.8°C). Brucella agglutination test, Listeria agglutination test, and sputum culture for tuberculosis were negative. Doppler ultrasound examination of both legs was performed to exclude deep venous thrombosis. An echocardiogram did not find any evidence of…
