tailieunhanh - báo cáo khoa học: "Cystic cavernous malformation of the cerebellopontine angle: Case report and literature review"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Cystic cavernous malformation of the cerebellopontine angle: Case report and literature review | Huang et al. World Journal of Surgical Oncology 2011 9 36 http content 9 1 36 5 Q WORLD JOURNAL OF SURGICAL ONCOLOGY CASE REPORT Open Access Cystic cavernous malformation of the cerebellopontine angle Case report and literature review Haiyan Huang1t Kan Xu1t Limei Qu2 Ye Li3 Jinlu Yu1 Abstract Background Cavernous malformations CMs in the cerebellopontine angle CPA are rare and most of such CMs reported to date are solid and extend from the internal auditory canal into the CPA. In contrast cystic CMs that arise in the CPA and do not involve the internal auditory canal and dura of the skull base are extremely rare. Case presentation A 50-year-old man presented with vertigo and progressive hearing loss in the right ear. MRI examination revealed a lesion in the CPA with solid and cystic components. Surgery was performed. Well-circumscribed adhesion to cranial nerves the cerebellum or the brain stem was noted during surgery. The lesion was totally resected. Pathological examination suggested the lesion to be a CM. At 1-year follow-up the symptoms at presentation had resolved and no complications had occurred. Conclusion Although cystic CMs of the CPA have no established imaging features a diagnosis of CMs may be suspected when a cystic lesion is present in the CPA and does not involve internal acoustic meatus or dura mater of the skull base. Skillful microsurgical techniques and monitoring of cranial nerves will secure good outcomes for patients with cystic CMs in the CPA. Background Cavernous malformations CMs occur in of the general population and they account for 10-15 of all vascular malformations of the central nervous system 1 2 . Intracranial CMs are commonly located in the supratentorial region brain stem basal ganglion and cerebellar hemisphere 3 . However CMs arising in the cerebellopontine angle CPA are an extremely rare clinical entity. At present there are few reports available on such CMs. The majority of the CMs in the CPA reported .