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Sensitive and Specific Findings

CNS Toxoplasmosis: Sensitivity and Specificity

Introduction: Infection of the brain parenchyma by Toxoplasma, almost exclusively seen in HIV/AIDS patients. Often presents as a ring-enhancing lesion.

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Tags: Infection Neurologic Tag this Diagnosis.

Differential Diagnoses include: Lymphoma, CNS

The sensitivity and specificity of findings for CNS Toxoplasmosis are listed below. See the left navigation bar to change the display.

Pre-Test Probability (Prevalence): %. Post-Test Probability (Predictive Value): %. Switch to display mode.
**Note that calculating probabilities from more than one finding is inherently inaccurate because findings are not independent. (For example, using two positive findings that share a common pathogenesis is likely to overestimate the true probability.)
Sensitive and Specific Findings
FindingResult SensitivitySpecificity
[ + ] PET/CT scan + 0 - 90.9%100%
[ + ] Thallium-201 SPECT + 0 - 100%90%