RT Journal Article
SR Electronic
T1 Neuroimaging Features of Ectopic Cerebellar Tissue: A Case Series Study of a Rare Entity
JF American Journal of Neuroradiology
JO Am. J. Neuroradiol.
FD American Society of Neuroradiology
SP 1167
OP 1173
DO 10.3174/ajnr.A7105
VO 42
IS 6
A1 G. Orman
A1 S.F. Kralik
A1 R. Battini
A1 B. Buchignani
A1 N.K. Desai
A1 R. Goetti
A1 A. Meoded
A1 C. Mitter
A1 B. Wallacher-Scholz
A1 E. Boltshauser
A1 T.A.G.M. Huisman
YR 2021
UL http://www.ajnr.org/content/42/6/1167.abstract
AB SUMMARY: Ectopic cerebellar tissue is a rare entity likely secondary to multiple, interacting, developmental errors during embryogenesis. Multiple sites of ectopic cerebellar tissue have been reported, including extracranial locations; however, an intracranial location is most common. We report on the MR imaging findings of a multi-institutional series of 7 ectopic cerebellar tissue cases (2 males, 4 females, 1 fetal) ranging from 22 weeks 5 days' gestational age to 18 years of age. All cases of ectopic cerebellar tissue were diagnosed incidentally, while imaging was performed for other causes. Ectopic cerebellar tissue was infratentorial in 6/7 patients and supratentorial in 1/7 patients. All infratentorial ectopic cerebellar tissue was connected with the brain stem or cerebellum. MR imaging signal intensity was identical to the cerebellar gray and white matter signal intensity on all MR imaging sequences in all cases. Ectopic cerebellar tissue should be considered in the differential diagnoses of extra-axial masses with signal characteristics similar to those of the cerebellum. Surgical biopsy or resection is rarely necessary, and in most cases, MR imaging is diagnostic.ECTectopic cerebellar tissue