INTRODUCTION Diseases of paranasal sinuses, nasal cavity, and skull base can be treated by endonasal operations using a nasal rigid endoscope. When conducting this kind of surgery, anatomical references are critical for safety. OBJECTIVE To measure the distance from the posterior wall of the maxillary sinus to the skull base, according to socio-demographic characteristics, and to detail an an...

OBJECTIVE Adult abdominal fat, which is known to contain pluripotent stem cells, is frequently used to treat cerebrospinal fluid leak. The aim of this study was to assess the efficacy and reliability of abdominal fat graft to close large skull base defects after extirpation of malignant sinonasal tumors. STUDY DESIGN Case series with chart review performed between 2009 and 2014. SUBJECTS AN...

OBJECTIVES/HYPOTHESIS Anterior and central skull base lesions and their surgical treatment (endoscopic or open approaches) can affect quality of life. A disease-specific instrument is needed to compare quality of life for different surgical approaches. STUDY DESIGN Items were generated using a composite strategy consisting of chart review, systematic review of skull base instruments, expert i...

With recent advances in surgical technology such as preoperative imaging, neuro-monitoring, and surgical instruments, the surgical resectability of intracranial meningiomas has increased over the last two decades. This study reviewed clinical articles regarding the surgical treatment of meningiomas to clarify the role of surgical excision, with a focus on skull base meningiomas. We sub-classifi...

Head injuries with or without fracture ofthe skull feed. Serious intracranial injury is extremely are the commonest cause ofdeath from battering, unlikely. but abdominal injury to the gut or solid organs The force entailed in physical abuse-for can mimic the signs ofhead injury and can lead to example, in swinging the child, in violent death if they are unrecognised. uncontrolled shaking, and i...

STUDY HYPOTHESIS Information on the influence of the mass of the helmet on the pattern of head injuries suffered by motorcyclists involved in collisions is scarce. This study was undertaken to verify a possible connection between the weight of the helmet worn and the occurrence of a ring fracture of the base of the skull surrounding the foramen magnum. DESIGN One hundred twenty-two fatally in...

BACKGROUND Decreasing the maximum force applied during traction to the base of the fetal skull using a less rigid polyurethane forceps is the basis of this study. Our hypothesis was that less force would be generated with polyurethane forceps than with steel forceps. OBJECTIVE To test a new soft polyurethane obstetrical forceps for maximal force generated to the base of the skull during simul...

introduction: skull base meningiomas constitute a large proportion of the meningiomas, which are the most common benign brain tumors. the treatment of skull base meningiomas is specially challenging and controversial due to the proximity of these tumors to the vital brain structures. radiosurgery is now emerging as an efficient alternative treatment modality which involves the ablation of tumor...

introduction: notochord. although histologically benign, these tumors are locally aggressiveand present significant managment challenges . there arew some studies onevaluated the location, age and gender of the patients with chordoma in tworeferral centers in tehran.chordoma cases but there was no study about iranian cases. in this study weskull base chordomas are rare neoplasms arising from th...