<prompt> This man had cervical adenopathy. What is the most likely diagnosis?Arteriovenous malformationCellulitisGraves diseaseLymphoma  <response>: Answer D. LymphomaBinocular proptosis with conjunctival injection and chemosis along with multiple enlarged cervical lymph nodes suggests a diagnosis of lymphoma. In this patient, the proptosis resolved following treatment with combination chemotherapy. 