Coccidioidal meningitis in non-AIDS patients. A case series at a Mexican neurological referral center

Neurococcidiomycosis in children with hydrocephalus: assessment of functional outcome, quality of life and survival in relation to neuroimaging findings

PURPOSE

Coccidioidal meningitis (CM) is an uncommon disease frequently misdiagnosed. Neuroimaging and mortality are not considered in detail in previous pediatric CM series. Our objective is to evaluate outcome of pediatric neurococcidiomycosis in relation to neuroimaging findings.

METHODS

We performed a prospective, observational, cross-sectional study in children with hydrocephalus and CM treated at Specialties Hospital in Torreon, Mexico (between 2015 and 2020). The outcome was evaluated by Hydrocephalus Outcome Questionnaire (HOQ) and the modified Rankin Scale (mRS). Follow-up was established at the first shunt surgery and survival since CM diagnosis confirmation. Neuroimaging was analyzed in relation to clinical data, outcome and survival. Kaplan-Meier analysis was performed with IBM-SPSS-25.

RESULTS

Ten pediatric cases with CM and hydrocephalus were reported. Aged 6-228 months, 60% were female. Mean number of surgeries was 4.3 SD ± 3 (range 1-15). Asymmetric hydrocephalus was the most common neuroimaging finding (70%), followed by cerebral vasculitis (20%) and isolated fourth ventricle (IFV) (20%). The mean HOQ overall score was 0.338 SD ± 0.35. A minimum follow-up of 18 months was reported. Mean survival was 13.9 SD ± 6.15 months (range 3-24). Poor survival was correlated with asymmetric hydrocephalus (p = 0.335), cerebral vasculitis (p = 0.176), IFV (p < 0.001), bacterial superinfection (p = 0.017), lower mRS scores at hospital discharge (p = 0.017) and during follow-up (p = 0.004). The mortality rate was 20%.

CONCLUSIONS

We report the largest series in Latin America of pediatric CM and hydrocephalus. Asymmetric hydrocephalus, IFV and cerebral vasculitis are complications that increase mortality and must be early diagnosed for a timely surgical and medical treatment. HOQ and mRS could be alternative scales to evaluate outcome in these patients. After a long follow-up (18 months), survival remained poor after diagnosis confirmation in our series.

Persistent Headaches in an Avid Hiker: A Case of Chronic Coccidioidal Meningitis

The clinical presentation, diagnosis, treatment, and complications of coccidioidal meningitis caused by the dimorphic pathogenic fungus Coccidioides (Coccidioides immitis and Coccidioides posadasii) have been well documented in the literature. Despite the abundance of literature concerning this disease manifestation, it is not very commonly seen in clinical practice, delaying its diagnosis and treatment and leading to devastating neurological sequelae. Therefore, considering this disease process as a potential diagnosis in endemic areas is important for appropriate and timely treatment. We present the case of a 26-year-old male who was found to have chronic coccidioidal meningitis on further investigation. The patient presented as a transfer for an abnormal head MRI with a three-month history of progressive occipital headaches and shortness of breath. Associated symptoms included transit vision loss, upper extremity numbness, night sweats, decreased appetite, and weight loss. Relevant risk factors were being a hiker and living in the southwest of Texas. The patient was started on empiric ceftriaxone and vancomycin. A repeat MRI showed leptomeningeal enhancement and acute infarcts in the left temporal lobe and lentiform nucleus. Cerebrospinal fluid (CSF) analysis showed pleocytosis with lymphocytic predominance, the presence of eosinophils, elevated protein level, and an extremely low glucose level. Further workup ruled out syphilis and tuberculosis. Therefore, considering his clinical presentation, risk factors, and workup results, ceftriaxone and vancomycin were discontinued, and high-dose oral fluconazole was started, which produced a marked clinical response within the next 48 hours. A CT thorax showed findings suggestive of pulmonary coccidioidomycosis, and Coccidioides serology in both serum and CSF specimens returned positive.

Central Nervous System Coccidioidomycosis in Children: A Retrospective Case Series

BACKGROUND

Published literature on central nervous system (CNS) coccidioidomycosis in children is limited. Here we describe a large case series of pediatric CNS coccidioidomycosis from a tertiary care center in an endemic region.

METHOD

This is a retrospective case review of patients ≤21 years old with a diagnosis of CNS coccidioidomycosis from January 1, 2000, to December 31, 2018.

RESULTS

Thirty patients (median age 10.8 years) were identified and most (93%) were previously healthy. Fever (90%), headache (70%), vomiting (53%), and fatigue (57%) were the most common presenting clinical manifestations, with focal neurological signs/symptoms present in 14 (47%). The initial serum Coccidioides compliment fixation (CF) titer was ≤ 1:8 in 33%. Most patients had extra-axial brain involvement (83%) and seven (23%) had associated spinal cord disease. Shunt placement was required in 70% and 62% required revision. Fluconazole was the initial treatment in 22 (73%), with treatment failure occurring in 50%. Most patients (77%) stabilized and were maintained on suppressive therapy, 4 (13%) experienced relapses and/or progressive disease, and one (3%) died, while long-term neurological complications occurred in 17%.

CONCLUSIONS

CNS coccidioidomycosis is an uncommon and sometimes devastating complication of disseminated coccidioidomycosis. Many patients present with relatively low CF titers and hydrocephalus is common. Fluconazole treatment failures are common, and management remains difficult despite recent advances in therapy. Most patients do well once the disease is stabilized and require lifelong therapy. Newer therapeutic agents are needed.

Spinal arachnoiditis and syringomyelia: Review of literature with emphasis on postinfectious inflammation and treatment

Background:

Arachnoiditis refers to chronic inflammation of the arachnoid mater and subarachnoid space due to three major etiologies: chemical, mechanical, and postinfectious. As a rare disease with variable symptomatology and severity at presentation, arachnoiditis can be extremely debilitating with many complications, prominent among which is syringomyelia.

Methods:

We reviewed current literature concerning postinfectious spinal arachnoiditis and associated syringomyelia with emphasis on the treatment options that have been used to date and discuss their respective benefits and drawbacks.

Results:

It is critical to understand the natural history and potential complications of patient with postinfectious arachnoiditis. Surgical and medical treatments both have their own merits and demerits. Different surgical approaches have been employed with variable success rates.

Conclusion:

At present, no consensus exists regarding management of these patients due to the variable nature of the disease that affects treatment efficacy; however, surgical intervention in selected cases may be beneficial.