Acute Fluctuant Neurological Symptoms in Stable Chronic Cryptococcus gattii Cryptococcomas: A Novel Disease Complication.
2021
Background Cryptococcus, a yeast-like fungus, is the most common cause of fungal meningitis worldwide. The Cryptococcus gattii variety is concentrated in Australia has a greater propensity to infect immunocompetent hosts, cause meningitis and form crytococcomas. This case presents a novel disease complication, that is, acute neurological symptoms without seizures, disease progression or reactivation. Case presentation A 58-year-old immunocompetent male was brought to the emergency department with dysarthria and right arm paraesthesias. Computed tomography of the brain brain and magnetic resonance imaging revealed no stroke but found several previously identified crytococcomas that demonstrated no interval change. Blood tests and lumbar puncture found only a low cryptococcal antigen complex titer (CRAG) (1:10) and a negative cell culture. He had remained compliant on his maintenance fluconazole therapy and had no immunocompromise or seizure activity. He was initially treated as a relapse of cryptococcal disease and restarted on induction therapy but after the cell culture returned negative and the symptoms resolved over the following days he was reverted back to maintenance therapy. Discussion and conclusions Central nervous system cryptococcomas are difficult to treat, chronic infections, that in our patient had lasted over 10 years despite treatment compliance. A true cryptococcal meningitis relapse is indicated by positive cell cultures in previously sterile fluid but cryptococcoma progression is measured by serial magnetic resonance imaging or computed tomography scans. In the case of progression or relapse induction and consolidation therapy should be restarted. Our patient demonstrated neither relapse nor progression but presented with a novel disease complication of acute fluctuating neurology in chronic stable cryptococcomas.
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