Answers are grounded in this paper and cite their sources.
Intracranial fungal aneurysms arise from major cerebral arteries. Fungi directly invade vessel walls from the luminal surface (fungal emboli) or from the adventitia (fungal meningitis). The vasa vasorum are free of fungi. Aneurysmal rupture is common with extensive hemorrhagic necrosis of the surrounding brain. Aspergillus is the usual causative agent; its sources are nasal sinusitis or endocarditis.
No takes yet. Share an insight, caveat, or question.
Horten et al. (1976) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: