Transnasal Route: New Approach to Endoscopy

Three-dimensional endoscopy in transnasal transsphenoidal approach to clival chordomas.

BACKGROUND The purpose of this prospective, observational study was to evaluate the management of skull base chordomas surgically resected via a 3D-endoscopic transnasal approach. METHODS Thirteen consecutive patients were observed and only 9 were surgically treated using a 3D-endoscopic transnasal approach assisted by a novel 3D visualization system. RESULTS Nine consecutive male patients ...

Evaluation of Duodenal Hypersensitivity to Acid Using Transnasal Endoscopy

a new approach to credibility premium for zero-inflated poisson models for panel data

هدف اصلی از این تحقیق به دست آوردن و مقایسه حق بیمه باورمندی در مدل های شمارشی گزارش نشده برای داده های طولی می باشد. در این تحقیق حق بیمه های پبش گویی بر اساس توابع ضرر مربع خطا و نمایی محاسبه شده و با هم مقایسه می شود. تمایل به گرفتن پاداش و جایزه یکی از دلایل مهم برای گزارش ندادن تصادفات می باشد و افراد برای استفاده از تخفیف اغلب از گزارش تصادفات با هزینه پائین خودداری می کنند، در این تحقیق ...

Endoscopic transnasal approach to sellar tumors.

UNLABELLED Transsphenoidal surgery for sellar region tumors is traditionally done only by neurosurgeons. The use of endoscopes has permitted a direct transnasal approach to the sphenoidal sinus, without dissection of the septal mucosa, reducing postoperative morbidity. AIM The purpose of this study was to assess the technical difficulties, and per and postoperative complications of the otolar...

Endoscopic transnasal approach to the pterygopalatine fossa.

OBJECTIVE To describe an endoscopic transnasal approach to the pterygopalatine fossa (PPF). DESIGN Case series of 3 patients. SETTING An academic medical center. Patients One patient presented with an asymptomatic PPF schwannoma. The second patient presented after a sudden onset of complete unilateral vision loss with a complete ipsilateral sphenoid sinus opacification and radiographic sign...