Pseudotumoural hemicerebellitis: imaging findings in two cases.
Pseudotumoural hemicerebellitis is exceedingly rare. It may closely resemble a tumour either clinically or on imaging, and a high index of suspicion is required to avoid unnecessary surgical procedures. MRI is the most useful diagnostic tool, and reveals a swollen cerebellar hemisphere, hyperintense in T(2) weighted images. A pattern of predominantly pial contrast enhancement, absence of a well-defined mass and regression of the abnormalities in follow up examinations help to rule out malignancy. We report two cases of pseudotumoural cerebellitis (an 11-year-old girl and a 9-year-old boy) studied with CT and MRI.
de Mendonca
J L F
JL
Radiology Unit, Hospital de Base do Distrito Federal, SMHS 101, Bloco A, Subsolo, CEP 70335-900, Brasilia, DF, Brazil.
Barbosa
H
H
Viana
S L
SL
Freitas
F M O
FM
Viana
M A C B
MA
Ferreira
A C L
AC
D002526:Cerebellar Diseases / Q000175:diagnosis*; D002528:Cerebellar Neoplasms / Q000175:diagnosis; D002648:Child; D003937:Diagnosis, Differential; D004660:Encephalitis / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D014057:Tomography, X-Ray Computed