Active clinical trials for "Skull Base Neoplasms"

The Auditory Nerve Test System (ANTS) is a novel device that stimulates the auditory nerve much like a cochlear implant. The purpose of this study is to demonstrate feasibility of the ANTS during translabyrinthine surgery for vestibular schwannoma resection. If the auditory nerve is kept intact, then the patients will also receive a cochlear implant at the same time potentially alleviating the morbidities caused by a vestibular schwannoma and asymmetric sensorineural hearing loss.

The investigational part of this study is using a mobile PET/CT scanner to take images of the participants tumor immediately after they are treated with proton radiation. This allows the participant to be treated and imaged on the same bed. The information obtained may improve the accuracy of treatment and may help to minimize the dose delivered unnecessarily to healthy tissue.

The endoscopic endonasal transsphenoidal surgery (EETS) is widely used. Although the incidence of complications is low, hypertensive episodes during surgery and awakening and cerebro spinal fluid (CSF) leakage have been described. The occurrence of coughing or vomiting during the early postoperative period must be avoid to protect the patient from CSF leakage and arterial hypertension. The emergency of anesthesia with laryngeal mask has a better haemodynamic profile and less incidence of cough in some surgical procedures and it could help minimizing the risks after EETS

This study is being done to demonstrate the feasibility of using a nasal endoscope to perform intraoperative angiography of surgical field, with the goals to evaluate anatomical landmarks and tumor characteristics during skull base surgery and publish a technical note.

This is a feasibility study in which indocyanine green (ICG) will be administered during routine expanded endonasal approach (EEA) for cranial base pathologies in which a nasoseptal flap harvest will be necessary. The research entails administering ICG, which is already widely used during open neurosurgical procedures, to identify the blood supply at two distinct stages of endonasal cranial base surgery: during nasoseptal flap harvest and after final positioning of the nasoseptal flap to ensure its viability before ending the case.

Skull base tumors are a type of tumor that grow in the area of several skulls behind the cranial cavity. The incidence rate is 2 to 18 per 100,000 people per year; males and females are likely to have a proportional difference in the types of skull base tumors. Cerebellopontine angle (CPA) tumors are the most common neoplasms in the posterior skull base,accounting for 5-10% of skull base tumors.Some different kinds of tumors can grow in cerebellopontine angle. The tumors are more likely to cause some symptoms when they grow large enough to put pressure on the brain. A common traditional treatment for skull base tumors is neurosurgery-craniotomy. However, after the operation, brain may be injured with hematoma, and the instruments used are in contact with the brain. It is still inevitable that there will have complications of minor and major nerve damages, such as facial paralysis,trigeminal neuralgia, tinnitus, sports disorders (ataxia) and so on. Acupuncture has a unique effect on the treatment of the human nervous system. Aim of the study is used acupuncture to improve the complications of the surgery of Cerebellopontine angle tumors in skull base.

Endonasal endoscopic approach to the skull base has been expanded in the last several years owing to advances in the radiological aspect that provided a better evaluation of the lesions and the surrounding structures, technological advances that include angled endoscope, development of high-resolution cameras, high definition monitors and navigation systems and better anatomical experience. The endoscopic endonasal approach now provides access to frontal sinus to the second cervical vertebra in the sagittal plane and from the sella to the jugular foramen in the coronal plane. Endoscopic resection of large skull base tumors results in large defect for which repair is a challenge. Several factors besides the size of the defect should be considered during skull base repair as CSF leak, CSF pressure, history or need for future radiotherapy, lack of support and local tissue vascularity. The aim of this study is to Provide an algorithmic approach for skull base reconstruction after endonasal cranio-endoscopic resection using autologous grafts according to the extent of resection, skull base defect size, the presence of CSF leak, CSF pressure and local tissue vascular