J-M Thomassin

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BACKGROUND Surgical treatment of petroclival meningiomas remains challenging. In order to refine indications for the use of stereotactic radiosurgery in the treatment of these tumours, we retrospectively evaluated our experience in this field. METHODS Thirty-two patients harboring a petroclival meningioma were treated consecutively using a Gamma knife(More)
RATIONALE To evaluate the functional results of Gamma Knife surgery of vestibular schwannomas relying on a large and prospective series of consecutive cases. MATERIAL AND METHOD The first 1000 patients with cerebello-pontine angle schwannomas were consecutively treated by Gamma Knife in Marseille Timone University Hospital between July 1992 and March(More)
Primary ectopic meningiomas are uncommon. The authors report a case of a 12-year-old boy with a meningioma presenting as a neck mass. The conclusion of the initial biopsy was chemodectoma, but on surgical resection, the tumour was found to have invaded the petrous bone. Post-operative follow-up was uneventful but magnetic resonance imagery revealed(More)
BACKGROUND Evidence of a high jugular bulb position (HJBP) during the translabyrinthine approach may compromise the surgical removal of cerebellopontine angle (CPA) tumours. We report a simple surgical procedure to safely manage this frequent normal variation and comment on various alternative options. METHODS The translabyrinthine approach included a(More)
To evaluate the results of Gamma Knife radiosurgery treating vestibular schwannomas (VS) secondary to type 2 neurofibromatosis (NF2) we reviewed our clinical experience. Among the VS that have been treated between July 1992 and January 2002, we could analyze retrospectively the data of 50 VS from 37 patients. Fourteen patients had the mild phenotype while(More)
One of the primary criticismes of vestibular schwannoma (VS) radiosurgery is that the risk of surgical morbidity is increased for patients whose tumor progresses after the procedures. We reviewed the French experience of operated patients after failed Gamma Knife radiosurgery. From July 1992 to January 2002, 25 out of the 1000 treated patients underwent(More)
Non-surgical stereotactic gamma ionizing irradiation was developed in order to produce a lethal effect on unilateral acoustic neurinomas (vestibular schvannomas). We present a study of postural vestibular dependent performances in 218 patients before and after curative irradiation. Subjects were asked to stand at ease on a static dynamometric foot-plate,(More)
OBJECTIVE The majority of the patients still lose hearing function in spite of the technical advances in microsurgery. We wanted to evaluate preservation of hearing function potential after Gamma Knife Surgery. MATERIAL AND METHOD In Marseille, we performed 1000 Gamma-Knife procedures for vestibular schwannomas between July 1992 and January 2002. This(More)
PURPOSE The aim of this paper is to present the functional outcomes after translabyrinthine approach (TLA) for vestibular schwannoma (VS). We analyzed data from 95 patients who had undergone surgery on between 1991 and 2001. METHODS This retrospective study of clinical and radiological data concerned 95 patients operated on by TLA for a unilateral(More)
Regular treatment of large vestibular schwannomas (VS) is surgical resection of the tumor with attempt of facial nerve preservation. In a very reduced number of tumors, microsurgery is not warranted mainly because of controlateral deafness or the risk of life-threatening open surgery. The purpose of this study was to analyze the results of Gamma Knife(More)