Two cases of solitary fibrous tumor/hemangiopericytoma with different clinical features according to the World Health Organization classification: case report and review of the literature

Gamma Knife radiosurgery for a recurrent craniocervical junction solitary fibrous tumour

“…Only eight craniocervical junction SFT cases have been previously reported in the literature (table 1). 7–14 Most authors have reported adequate resections with good outcomes using the suboccipital craniectomy, similar to our approach 7–10 13 14. Arai et al used a transcondylar far-lateral approach advocating a wider surgical corridor, improved haemostasis and excellent outcome 11.…”

“…Liu et al reviewed 26 spinal cases and further characterised them into types I-III depending on their morphology and localisation as extradural, intradural or intra-extradural paravertebral type 3. Surgery is the primary mode of treatment for spinal SFT, with gross total resection recommended when possible 14. Prognosis is usually favourable if gross total resection can be accomplished.…”

“…Grade 1 refers to highly collagenous, relatively low cellularity, spindle cell lesions; grade 2 includes more cellular, less collagenous tumours with less than five mitoses per 10 high-power fields with plump cells and staghorn vasculature; and grade 3 are lesions with five or more mitoses per 10 high-power fields 5 6. To the best of our knowledge, only eight cases of SFT at the craniocervical junction have been reported 7–14. We presented the ninth case of a craniocervical junction SFT and the first one with a recurrent lesion treated with Gamma Knife radiosurgery (GKRS).…”