Tomita S, Mendoza N D, Symon L
Gough-Cooper Department of Neurological Surgery, Institute of Neurology, Queen Square, London, UK.
Br J Neurosurg. 1992;6(6):587-90. doi: 10.3109/02688699209002377.
Craniopharyngioma situated in the posterior fossa is rare. It has been unclear whether such lesions arise primarily in this site or represent direct spread from a suprasellar focus. We report a patient with recurrent craniopharyngioma which had extended into the posterior fossa as far as the cerebellopontine angle through the tentorial hiatus with evidence that it had done so directly. A further separate lesion of similar signal characteristics on MRI scan, lying in the prepontine area, probably represented a seeding from the suprasellar area.
位于后颅窝的颅咽管瘤很罕见。目前尚不清楚此类病变是否主要起源于该部位，还是代表来自鞍上病灶的直接蔓延。我们报告一例复发性颅咽管瘤患者，肿瘤通过小脑幕裂孔延伸至后颅窝，直至桥小脑角，有证据表明其为直接蔓延。在MRI扫描上，位于脑桥前区的另一个具有相似信号特征的独立病灶，可能代表来自鞍上区域的播散。
