A 22-year-old man comes to the physician for 1-month history of a painless lateral neck swelling, fever, and night sweats. He has lost 5 pounds during this time. A biopsy of the left supraclavicular lymph node is shown. Which of the following is most likely to be seen in this patient?
CD10 positive cells
C-myc gene translocation
Mediastinal mass
Opsoclonus-myoclonus syndrome
Signet-ring cells
