A 62-year-old man comes to the physician for a 3-month history of fatigue, low-grade fever, and pain in his right arm. He has a history of cancer treated with radiotherapy. Hemoglobin is 10 g/dL. An x-ray of the right humerus is shown. Which of the following is most likely to be seen in this patient?
CD15/30 positivity on B lymphocytes
Cytoplasmic filamentous projections
Increased gene transcription of reductase enzyme
Reduced peptide hormone secretion
Warm autoimmune hemolytic anemia
