[Simple intraparenchymal cysts of the cerebellum. Apropos of 2 cases].
BACKGROUND
Cysts of the posterior fossa are common in the literature, but the simple cyst is rarely considered in the differential diagnosis of these cysts.


METHODS
The cases of two female patients with clinical symptoms of expansive cerebellar lesion are described. These patients were explored by MRI. They were operated upon and an anatomico-pathological diagnosis was made.


RESULTS
Both patients had an intraparenchymal cystic lesion of the cerebellum. No mural nodule and no enhancement after gadolinium injection were noted. The anatomico-pathological examination confirmed that the lesion was an intra-parenchymal simple cyst the walls of which showed no tumoral features.


CONCLUSIONS
Although this anatomico-pathological entity has not previously been described in the literature, such rare diagnosis should be borne in mind in patients presenting with a cystic tumour of the posterior fossa. MRI is of paramount importance in the evaluation of these lesions, but the anatomico-pathological diagnosis is indispensable to exclude a possible tumour.
Caldas
J G
JG
Services de Neuroradiologie, CHU Bicêtre-Faculté Paris-sud, Le Kremlin-Bicêtre.
Gilbert
D
D
Comoy
J
J
Lacroix
C
C
Doyon
D
D
D000328:Adult; D002526:Cerebellar Diseases / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D003287:Contrast Media; D003560:Cysts / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D005260:Female; D005682:Gadolinium; D006801:Humans; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D014057:Tomography, X-Ray Computed
D003287:Contrast Media; D005682:Gadolinium