Pneumocephalus in neonatal meningitis.

Area of Science:

• Neurology
• Infectious Diseases
• Radiology

Background:

• Pneumocephalus, the presence of air within the cranial cavity, is typically associated with head trauma, neurosurgery, or air embolism.
• While rare, central nervous system infections have been implicated as a cause of pneumocephalus.
• Enterobacter cloacae is a Gram-negative bacterium known to cause various infections, including meningitis.

Observation:

• A rare case of diffuse pneumocephalus was observed.
• The pneumocephalus was found to be secondary to meningitis caused by Enterobacter cloacae.
• Clinical presentation suggested an infectious etiology within the cranial cavity.

Findings:

• Cranial ultrasound initially raised suspicion for pneumocephalus.
• Computed tomography (CT) imaging definitively confirmed the diagnosis of diffuse pneumocephalus.
• The findings established a direct link between Enterobacter cloacae meningitis and diffuse pneumocephalus.

Implications:

• This case highlights an unusual presentation of meningitis, expanding the known causes of pneumocephalus.
• It underscores the importance of considering infectious etiologies in patients with unexplained pneumocephalus.
• The study emphasizes the utility of neuroimaging modalities like ultrasound and CT in diagnosing complex neurological conditions.