Primary CNS lymphoma
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Background
- AIDS-defining malignancy that is strongly related to Epstein-Barr virus (EBV) infection
- Occurs with profound immunosuppression (CD4 counts <50cells/uL)
- Accounts for approximately 20 to 30% of CNS lesions in patients with AIDs
Clinical Features
- Can present with a variety of focal or nonfocal signs and symptoms
- Confusion, lethargy, memory loss, hemiparesis, aphasia, mental status changes, seizures
- Constitutional symptoms (systemic B symptoms) e.g. fever
Differential Diagnosis
HIV associated conditions
- HIV neurologic complications
- HIV pulmonary complications
- Ophthalmologic complications
- Other
- HAART medication side effects[1]
- HAART-induced lactic acidosis
- Neuropyschiatric effects
- Hepatic toxicity
- Renal toxicity
- Steven-Johnson's
- Cytopenias
- GI symptoms
- Endocrine abnormalities
Evaluation
- CT scan: well-defined focal lesion, isodense or hyperdense to the gray matter
- MRI (higher diagnostic yield): variable, isointense or hypointense lesions on T1-weighted images
- Lumbar puncture:
- CSF cytology
- CSF EBV PCR
- Should also obtain toxoplasma serologies, most are treated empirically for toxoplasma while serology is pending
- Stereotactic brain biopsy if necessary
Management
- High-dose methotrexate therapy (3 g/m2 for four to eight cycles)
- Steroids
- Potent antiretroviral therapy
- Radiation therapy
Disposition
See Also
External Links
References
- ↑ Gutteridge, David L MD, MPH, Egan, Daniel J. MD. The HIV-Infected Adult Patient in The Emergency Department: The Changing Landscape of the Disease. Emergency Medicine Practice: An Evidence-Based Approach to Emergency Medicine. Vol 18, Num 2. Feb 2016.
- ↑ Forsyth PA. Biology and management of AIDS-associated primary CNS lymphomas. Hematol Oncol Clin North Am. 1996;10(5):1125-34.
- ↑ Thurnher MM. CNS involvement in AIDS: spectrum of CT and MR findings. Eur Radiol. 1997;7(7):1091-7.