Primary CNS lymphoma: Survival after craniotomy with resection versus stereotactic biopsy and the clinical impact of the "vanishing tumor" phenomenon.
OBJECTIVE Primary central nervous system lymphoma (PCNSL) is a rare malignancy in which neurosurgical management is usually limited to stereotactic biopsy, while resection is considered in selected cases. Pre-diagnostic corticosteroids may cause radiological regression ("vanishing tumor"), potentially delaying diagnosi...