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  • Title: Dumbbell-shaped jugular foramen schwannomas: surgical management, outcome and complications on a series of 16 patients.
    Author: Chibbaro S, Mirone G, Makiese O, Bresson D, George B.
    Journal: Neurosurg Rev; 2009 Apr; 32(2):151-9; discussion 159. PubMed ID: 19189142.
    Abstract:
    Schwannomas of the lower cranial nerves are very rare and the dumbbell-shaped ones are even rarer. The authors report their experience in managing such lesions, usually presenting either with intra- and/or extra-cranial extension through an enlarged jugular foramen. The juxtacondylar approach without sacrificing the labyrinth was used; clinical, radiological and complication features are discussed and analysed. This is a case series study on 16 consecutive patients with lower cranial nerves schwannomas surgically managed during a 14-year period using the juxtacondylar approach. In 13 cases, a complete resection has been achieved whereas in three, the excision was near total. The tumour nerve origin has been identified only in ten cases (62.5%). No death or additional post-operative cranial nerve deficits occurred. Aspiration pneumonia developed in one patient and cerebrospinal fluid leak in another. Pre-operative lower cranial nerve deficits improved in all patients. At a mean follow-up of 6.6 years (range 2-14 years), no radiological tumour recurrence was recorded amongst the patients having complete resection as well as no tumour progression in the group of near total removal. Jugular foramen schwannomas can be radically and safely resected with no additional neurological deficit if a careful pre-operative evaluation and the appropriate surgical approach is implemented. Finally, full cranial nerve functional recovery may be expected after complete resection.
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