Head and neck cancers comprise a heterogeneous group of mostly squamous cell carcinomas that arise in the mucosal surfaces of the upper aerodigestive tract and primarily affect the oral cavity (lips, front two-thirds of the tongue, gingivae, buccal mucosa, floor of the mouth, hard palate, and the small area behind the wisdom teeth); the salivary glands; the nasal cavity and the paranasal sinuse...

The paper analyzes application of orbitozygomatic approaches at the Department of Skull Base and Craniofacial Surgery of the Burdenko Neurosurgical Institute for a 14-year period. During this time, 723 patients were operated on using the orbitozygomatic approach, which has become the workhorse of surgery for skull base tumors spreading into the orbit, paranasal sinuses, and pterygopalatine and ...

In this research, effect of nanoparticles dimeter on free convection of aluminum oxide-water was investigated in a cavity by single phase and two phase models. The range of Rayleigh number is considered 105-107 in volume fractions of 0.01 to 0.03 for nanoparticles with various diameters (25, 33, 50 and 100 nm). Given that the two phase nature of nanofluids, necessity of modeling by this method ...

OBJECTIVE The endonasal route often provides the most direct and safe approach to skull base pathology. In this article we review the literature with regard to management of the paranasal sinuses in the setting of skull base surgery. METHODS We describe our institutional experience and review the literature of concurrent management of the sinusitis in patients undergoing endoscopic skull base...

In order to study the possibility of aerodynamic optimization base cavity for slender body, influence with non-cylindrical shape, which is different from traditional column one, investegated by numerical method in paper. The supersonic flow field same body two sorts unconventional cavity, half truncated-cone and column, simulated axisymmetric Navier-Stokes equations. Distribution Mach Number (M...