PURPOSE: To review the imaging features of @entity7667 (GGs) and compare between Infratentorial GGs located within the cerebellum and brainstem. METHODS: The cases of 24 @entity1 with histologically-confirmed infratentorial GGs were reviewed retrospectively. These subjects' cases were divided into a cerebellar group (n   =   8) and a brainstem group (n   =   16) based upon the anatomic location of the @entity5 . Imaging features (including @entity5 volume, margins, cystic/solid ratio, enhancement, @entity4 , and @entity76 ) were compared between these two groups. RESULTS: On magnetic resonance imaging, infratentorial GGs showed isointensity or hypointensity on T1WI and heterogeneous hyperintensity on T2WI, with @entity76 observed in seven cases. Computed tomography images available in the cerebellar group showed heterogeneous isodensity with @entity730 . Cerebellar GGs (median   =   67.25  cm(3), inter-quartile range   =   27.78-83.27  cm(3)) were larger in volume than brainstem GGs (median   =   16.89  cm(3), interquartile range   =   6.08-27.26  cm(3)) (p   =   0.002). Cystic-solid mass (5 of 8) and solid mass (11 of 16) were more commonly represented in the cerebellar and brainstem group, respectively (p   =   0.033). Cerebellar GGs showed varying degrees of enhancement, while most of brainstem GGs showed moderate-to-marked enhancement (p   =   0.012). Dorsal-predominant enhancement (n   =   3) and posterior-marginal enhancement (n   =   5) were observed in the brainstem group. The degrees of @entity4 and rate of @entity76 were not significantly different between the two study groups. CONCLUSION: @entity76 can be found in infratentorial GGs involving the middle and inferior cerebellar peduncles. GGs should therefore be considered in the differential diagnoses when a solid-cystic mass with @entity730 is encountered in the cerebellum. @entity7667 tend to be smaller, solid masses with moderate-to-marked enhancement. Dorsal-predominant and posterior-marginal enhancement may be the specific imaging findings for brainstem GGs.

Radiological Evaluation of XXXX in Various Anatomic Locations of the Cerebellum and Brainstem.

@entity1 :: ('9606', 'Species') :: ['patients'] @entity5 :: ('MESH:D009369', 'Disease') :: ['tumor'] @entity4 :: ('MESH:D004487', 'Disease') :: ['peritumoral edema'] @entity730 :: ('MESH:D002114', 'Disease') :: ['calcification', 'calcifications'] @entity76 :: ('MESH:D002526', 'Disease') :: ['Ipsilateral cerebellar atrophy', 'ipsilateral cerebellar atrophy'] @entity7667 :: ('MESH:D018303', 'Disease') :: ['infratentorial gangliogliomas', 'Brainstem GGs']
@entity7667 :: (MESH:D018303,Disease) :: ['Infratentorial Gangliogliomas']
