What is the most common fungal infection of the central nervous system, and what are its key imaging features?

Cryptococcosis is the most common CNS fungal infection. It typically presents with leptomeningeal enhancement on MRI and may show dilated Virchow-Robin spaces. Clinically, it often affects immunocompromised patients, particularly those with HIV/AIDS. A common pitfall is mistaking its imaging features for other forms of meningitis or neoplastic processes.