Learning objectives
1- To review the imaging spectra of intracranial non-neoplastic cysts.
2- To discuss the major differential diagnosis.
3- To discuss and illustrate the most important features that may help narrow the differential diagnosis.
Background
Intracranial cystic lesions are common findings even in routine cerebral imaging examinations and represent a diagnostic challenge.
The authors review the imaging spectra of intracranial non-neoplastic cysts emphasizing the major differential diagnosis.
Findings and procedure details
INTRODUCTION
Cysts are common brain imaging findings. They can be divided in non-neoplastic and neoplastic lesions (Fig.1).
The questions below may help the diagnostic approach.
·Is the cyst extra-axial or intra-axial?
·Is it supra- or infratentorial?
·If it is extra-axial, is it midline or off-midline (Fig. 2)?
·If it is intra-axial, is it parenchymal or intraventricular (Table 1)?
ENLARGED PERIVASCULAR SPACES (VIRCHOW-ROBIN)
These are pial-lined interstitial fluid-filled structures that accompany penetrating arteries and veins. They are common and considered a normal variant.
Imaging features
Typically...
Conclusion
A broad spectrum of conditions can present with intracranial cysts and imaging plays a critical role in the diagnosis of these diseases.
Personal information and conflict of interest
AUTHORS - nothing to disclose
Adonis Manzella MD, MSc
S. Morais
E. Cavalcante
L. Á. Neto
G. Lago
L. Nascimento-Neto
E. Zamorano
R. Alves
M. Vasconcelos
[email protected]
Hospital da Restauração
References
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