title: Cerebral fungal infection with mycotic aneurysm of basilar artery and subarachnoid haemorrhage.
abstract: A 28-year-old Pakistani man was admitted with unresolved severe headaches for the past four weeks. Magnetic resonance (MR) imaging and MR angiography showed an enhancing mass in the sphenoid sinus, bilateral cerebellar infarcts and aneurysmal dilatation of the basilar artery. The differential diagnosis included fungal infection versus neoplastic lesion. The scrappings taken through the endoscope from the sphenoid sinus were initially negative for fungal infection. However, the second biopsy, done after putting him on antifungal, itraconazole 200 mg twice daily, revealed the presence of a fungal infection (aspergillosis). MR imaging revealed extension of the fungal infection from the sphenoid sinus into the clivus, and then intracranially. Imaging also revealed aneurysmal dilatation of the basilar artery and infarctions in the cerebellum and subarachnoid haemorrhage. Despite aggressive antifungal treatment, the patient died after 29 days. This case report describes the probable mechanism of fungal mycotic aneurysmal vascular dilatation and growth. It also points to the need for a rapid diagnosis of potential cases and an aggressive treatment approach of confirmed cases of fungal infections of the central nervous system.
authors.affiliation: Department of Radiology, Aga Khan University Hospital, Karachi, Pakistan. humera.ahsan@aku.edu
authors.forename: H
authors.initials: H
authors.lastname: Ahsan
authors.forename: F
authors.initials: F
authors.lastname: Ajmal
authors.forename: M F
authors.initials: MF
authors.lastname: Saleem
authors.forename: A B
authors.initials: AB
authors.lastname: Sonawala
mesh_terms: D000328:Adult; D000785:Aneurysm, Infected / Q000175:diagnosis / Q000382:microbiology*; D000935:Antifungal Agents / Q000627:therapeutic use; D001228:Aspergillosis / Q000175:diagnosis* / Q000188:drug therapy; D001488:Basilar Artery; D001706:Biopsy; D002533:Cerebral Angiography; D002544:Cerebral Infarction / Q000175:diagnosis / Q000382:microbiology*; D003937:Diagnosis, Differential; D017809:Fatal Outcome; D006801:Humans; D002532:Intracranial Aneurysm / Q000175:diagnosis / Q000382:microbiology*; D017964:Itraconazole / Q000627:therapeutic use; D018810:Magnetic Resonance Angiography; D008279:Magnetic Resonance Imaging; D008297:Male
chemical_list: D000935:Antifungal Agents; D017964:Itraconazole