OBJECTIVE: To describe the characteristics of patients diagnosed with intracranial fungal granuloma (IFG) in the largest reported series to date (to our knowledge). METHODS: A 22-year retrospective, multi-institutional review of 40 patients, aged 16 to 62 years (mean, 40.2 years), was performed in patients with histopathologically confirmed IFG. The variables were symptoms/signs at presentation, predisposing factors, location of granuloma, involvement of paranasal sinuses, diagnostic studies including blood and urine cultures, surgical procedures performed, specific organism identified, treatment, and prognosis. Plain x-rays, computed tomography, and/or magnetic resonance imaging scans were performed. RESULTS: Predominant symptoms included headache (83%), vomiting (65%), proptosis (48%), and visual disturbances (48%). Other symptoms were fever, nasal congestion, and seizures (7 [18%]). Common signs included papilledema (12 [30%]), with cranial neuropathy (I, III/IV/VI, and V in 4, 7, and 2 patients, respectively), hemiparesis (3), and meningismus (3). Predisposing factors were diabetes (16 [40%]), tuberculosis (7 [18%]), and immunocompromise related to renal transplant (2), non-Hodgkin's lymphoma (1), and human immunodeficiency virus (1). Location was primarily frontal (10 [25%]), with anterior cranial fossa involved in 8 (20%) patients; 6 (15%) patients had sellar/parasellar involvement. Eighteen (40%) had paranasal sinus involvement. Twenty-nine patients underwent craniotomy for resection, with 11 undergoing biopsy (of which 3 were transsphenoidally approached). Histopathology revealed aspergilloma (25 [63%]), mucormycosis (7 [18%]), cryptococcoma (3), cladosporidium (3), Bipolaris hawaiiensis (1), and Candida species(1). Microbiological analysis of the specimen was positive in 28 (60%) patients. All patients were treated with amphotericin B, fluconazole, and/or flucytosine. Only 26 patients completed amphotericin B therapy (due to nephrotoxicity). Mortality was 63%, most commonly due to meningoencephalitis (16 [36%]). CONCLUSIONS: High index of suspicion of IFG should exist for the following groups: (1) immunocompromised patients with intracranial lesions and (2) diabetic patients with intracranial and rhinocerebral mass lesions. Early diagnosis, surgical decompression, and a complete course of promptly initiated antifungal therapy are associated with better prognosis.
OBJECTIVE: To describe the characteristics of patients diagnosed with intracranial fungal granuloma (IFG) in the largest reported series to date (to our knowledge). METHODS: A 22-year retrospective, multi-institutional review of 40 patients, aged 16 to 62 years (mean, 40.2 years), was performed in patients with histopathologically confirmed IFG. The variables were symptoms/signs at presentation, predisposing factors, location of granuloma, involvement of paranasal sinuses, diagnostic studies including blood and urine cultures, surgical procedures performed, specific organism identified, treatment, and prognosis. Plain x-rays, computed tomography, and/or magnetic resonance imaging scans were performed. RESULTS: Predominant symptoms included headache (83%), vomiting (65%), proptosis (48%), and visual disturbances (48%). Other symptoms were fever, nasal congestion, and seizures (7 [18%]). Common signs included papilledema (12 [30%]), with cranial neuropathy (I, III/IV/VI, and V in 4, 7, and 2 patients, respectively), hemiparesis (3), and meningismus (3). Predisposing factors were diabetes (16 [40%]), tuberculosis (7 [18%]), and immunocompromise related to renal transplant (2), non-Hodgkin's lymphoma (1), and human immunodeficiency virus (1). Location was primarily frontal (10 [25%]), with anterior cranial fossa involved in 8 (20%) patients; 6 (15%) patients had sellar/parasellar involvement. Eighteen (40%) had paranasal sinus involvement. Twenty-nine patients underwent craniotomy for resection, with 11 undergoing biopsy (of which 3 were transsphenoidally approached). Histopathology revealed aspergilloma (25 [63%]), mucormycosis (7 [18%]), cryptococcoma (3), cladosporidium (3), Bipolaris hawaiiensis (1), and Candida species(1). Microbiological analysis of the specimen was positive in 28 (60%) patients. All patients were treated with amphotericin B, fluconazole, and/or flucytosine. Only 26 patients completed amphotericin B therapy (due to nephrotoxicity). Mortality was 63%, most commonly due to meningoencephalitis (16 [36%]). CONCLUSIONS: High index of suspicion of IFG should exist for the following groups: (1) immunocompromised patients with intracranial lesions and (2) diabeticpatients with intracranial and rhinocerebral mass lesions. Early diagnosis, surgical decompression, and a complete course of promptly initiated antifungal therapy are associated with better prognosis.
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