Type:
Educational Exhibit
Keywords:
Neoplasia, Cysts, Congenital, Localisation, Education, MR, Paediatric, Neuroradiology brain, CNS
Authors:
M. Neska-Matuszewska, A. Piekarek, M. Sąsiadek, A. Zimny; Wroclaw/PL
DOI:
10.26044/ecr2019/C-1664
Background
Background:
Posterior fossa cystic lesions are common findings observed in the pediatric population.
The most accurate method to evaluate posterior fossa is Magnetic Resonance Imaging (MRI),
where the sensitivity and specificity is far superior to those of Computed Tomography (CT) and transfontanellar ultrasound of neonates and infants.
There is a wide range of pathologies that need to be accounted in the evaluation of posterior fossa cystic lesions.
They can range from normal variants to life threating anomalies.
Material and methods:
Material of our analysis included posterior fossa cystic lesions found during the evaluation of 428 pediatric MR examinations carried out in our institution in the period of 6 years (2012-2017).
The patients age ranged from 3 days to 16 years (mean age: 9 years).
All brain MR examinations were performed either using 1.5 Tesla MR scanner (Signa Hdx; GE Medical Systems) or 3 Tesla MR scanner (Ingenia,
Philips).
Standard MR examination included axial T1-weighted,
axial,
coronal,
and sagittal T2-weighted images as well as axial FLAIR images followed by DWI,
SWI and in some cases also post-contrast 3D T1-weighted images.
We present 9 out of 95 cases of posterior fossa cystic lesions with their characteristic MR findings and a brief review of clinical issues based on literature and experience from our institution.