Abstract
Ectopic cerebellar tissue has only been described in isolated case reports, with only
two reported cases in adult patients. We report the case of a 63-year-old woman with
progressive, medically refractory headaches. A scan showed an intraosseous lesion
of the midline occipital bone. Surgical resection of the soft tissue lesion was undertaken.
Her headaches ceased postoperatively. Histopathological analysis revealed cerebellar
cortical tissue with a surrounding meningothelial cell layer, characteristic of cerebellar
ectopia. This is the second reported case of an intraosseous location of this lesion,
and only the third case described in an adult patient. Our findings illustrate a rare
cause of headaches and support the therapeutic roles of surgical treatment for this
extremely rare condition.
Keywords
ectopic cerebellar tissue - glioneuronal ectopia - intraosseous lesion - headache
- occipital bone - craniectomy
