Lymphoma and the nervous system.

This chapter considers the cellular pathologist’s perspective of the patient whose nervous system is affected by malignant lymphoma. This perspective is mainly gained through the assessment of surgical biopsies or cytological preparations, which are obtained from sites within or outside the central nervous system (CNS). But it is also influenced by postmortem findings, notably histological examination of the fixed brain in disorders that pose a significant diagnostic challenge, such as intravascular large-cell lymphoma.