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Brain and spinal tumours

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Primary central nervous system (CNS) lymphoma

Primary central nervous system (CNS) lymphoma (PCNSL) is a rare form of non-Hodgkin lymphoma (NHL). PCNSL starts in B cells (a type of white blood cell). It does not spread outside the central nervous system (CNS). Most PCNSLs are intermediate to high grade.

PCNSL occurs most often in the cerebral hemisphere but may involve the cerebrospinal fluid, vitreous humor (jelly-like substance in the centre of the eye), meninges and other places within the brain and spinal cord. PCNSL may be found in several places because it has the potential to spread throughout the central nervous system.


Kathleen Murphy She knew that indoor tanning could pose serious health risks and this motivated her to push for a tan-free prom at her school.

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Facing the financial burden of cancer

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The Canadian Cancer Society provides helpful information about government income programs, financial resources and other resources available to families struggling to make sense of the personal financial burden they face.

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