Halo pin-associated brain abscess is a rare but extremely important complication requiring prompt diagnosis and immediate intervention. Halo pin loosening with signs of local infection, fever, headaches, or seizures needs to be investigated urgently with neuroimaging. We conclude that with early diagnosis and appropriate treatment, serious morbidity and mortality can be avoided.
Epidural abscess with bone involvement is a rare manifestation of central nervous system cryptococcal infection. Both immunocompromised and immunocompetent patients can present with a painless swelling of the head that may or may not be accompanied with headache. Definitive diagnosis requires stain and culture of tissue. The overall prognosis is good when adequate surgical drainage and extended antifungal therapy are administered; however, the optimal duration of treatment is not determined at this time. (Infect Dis Clin Pract 2009;17: 193Y195)
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