[Alternative ways of collateral venous flow in occlusion of superior sagittal sinus].

The authors demonstrated alternative ways of bloodflow from occluded superior sagittal sinus through hypertrophic dural veins (middle meningeal veins) and sphenoparietal sinus. Parameters of bloodflow were evaluated using triplex ultrasonography. The possibility of venous drainage into anterior segment of superior sagittal sinus proximal to the site of occlusion with further retrograde flow towards dural venous anastomosis is verified.

[Specific features of anesthetic management of surgical treatment of malignant tumors of the skull base].

Neurosurgical interventions on the skull base including craniofacial block-resections were fulfilled on 36 patients aged from 16 through 73 years. Preoperative management of the patients was made mainly at the intensive therapy room. It included correction of water-electrolyte, protein metabolism, anemia.

[Surgical treatment of invasive tumors of the nasal cavity and paranasal sinuses involving the inferior and middle cranial fossae].

An analysis of combined treatment of 11 patients with tumors of the paranasal sinuses involving the skull base was made. Radical surgical interventions were performed in the volume of nasal exenteration, maxillectomy and orbital exenteration, nasal exenteration, and total maxillectomy. The technique of surgical interventions and results of treatment are described.

[Transfacial accesses to tumors of the clivus].

Treatment of 3 patients with malignant tumors of the skull base using transfacial accesses as half maxilotomy by the Kosson access and access with osteotomy of a nasoorbital complex was analyzed that provided a possibility to ablate large and gigantic tumors of the localization in question using the operative microscope and a traditional instruments' kit.