A 23-year-old woman presents with cervical and mediastinal lymphadenopathy. Biopsy of a cervical lymph node reveals a nodular appearance with fibrous bands, effacement of the lymph node architecture, and numerous lacunar cells. Which of the following is true regarding this disorder?
Benign neoplasm Frequent association with EBV infection Lacunar cells are positive for CD20 and CD45 Relatively orable clinical course