Secondary CNS Lymphoma in an Immunocompromised Patient: A Diagnostic Dilemma.

Primary lymphoma can occur in the brain and is restricted to the central nervous system (CNS). Secondary lymphoma involves the CNS after affecting other organs in the body. The prognosis is worse for secondary CNS lymphoma. Early diagnosis and treatment are mandatory. We report a case of secondary CNS lymphoma that was misdiagnosed as a cerebral abscess because of its unusual features.