Intravascular lymphoma with diffuse FDG uptake in the bone marrow by 18FDG-PET/CT

A 58 years old woman presented with prolonged fever with headache and significant weight losswithout abnormal finding on physical examination. The initial laboratory investigations revealed hemoglobin 9.3 g/dL, evidence of autoimmune hemolytic anemia on peripheral blood smear, urine protein 205 mg/24 hours, positive ANA, MRI brain showed subacute infarction at right-sided of pons. She was treated with high dose steroid as autoimmune disease but...