[Experience of transnazal endoscopic surgery of juvenile angiofibroma of the skull base and nasopharynx without performing preoperative embolization].

Juvenile nasopharyngeal angiofibroma (JNA) is a hypervascular, blood-supplied, benign tumour affecting the sinuses, nasal cavity, nasopharynx and the base of the skull. For intraoperative hemostasis, pre-operative embolism is a common and recommended procedure, but it has serious disadvantages, such as additional radiation exposure, anesthesia, and the risk of iatrogenic complications associated with the occlusion of the central artery of the retina, orbital and middle cerebral arteries. This article presents a report on successful radical removal of the widespread SAS without resorting to preoperative embolization, but with intraoperative transnazal endoscopic clipping of the internal maxillary artery (IMA).

EVALUATION OF BURDENSOME SYMPTOMS IN PATIENTS WITH RADIATION6ASSOCIATED AND SPONTANEOUS MYELOPROILIFERATIVE NEOPLASMS WITH THE USE OF OPTIMIZED SELF-ASSESSMENT MPN-SAF TSS.

Objective: To investigate the intensity of burdensome symptoms using self-assessment MPN-SAF TSS in patientswith radiation-associated and spontaneous myeloproiliferative neoplasms (MPNs).

Materials And Methods: The study included 89 patients with radiation-associated and spontaneous MPNs, the bur-densome symptoms of MPN were determined using MPN-SAF TSS.

Results: The average score for complaints in patients with radiation-associated MPNs was significantly higher thanin patients with spontaneous MPNs - 43.

[The application of the hidrogel-based medicinal compositions for the targeted delivery of medications in rhino- and otosurgery].

The objective of the present study was the analysis of the application of the hydrogel-based medicinal compositions for the treatment of the patients presenting with pathological changes in the nasal cavity and paranasal sinuses during the postoperative period. A total of 25 patients at the age from 18 to 60 years with the diseases of the nasal cavity and paranasal sinuses were available for the examination including 12 ones with polypous polysinusitis and 13 patients having benign neoplasms in the nasal cavity, paranasal sinuses, and the base of the skull. All these patients underwent endoscopic endonasal polysinusotomy.

Experimental and CFD flow studies in an intracranial aneurysm model with Newtonian and non-Newtonian fluids.

Background: According to the clinical data, flow conditions play a major role in the genesis of intracranial aneurysms. The disorder of the flow structure is the cause of damage of the inner layer of the vessel wall, which leads to the development of cerebral aneurysms. Knowledge of the alteration of the flow field in the aneurysm region is important for treatment.

One specific velocity color mapping using optical coherence tomography.

Depth resolved coherence gating along with Doppler shift detection of the carrier frequency is used for one predetermined velocity mapping in different flows. Bidirectional rapid scanning optical delay of optical coherence tomography system is applied in the reference arm. Tilted capillary entry is used as a hydrodynamic phantom to model a sign-variable flow with complex geometry.

Study of the Reynolds Number Effect on the Process of Instability Transition Into the Turbulent Stage.

The results of the experimental study of the Reynolds number effect on the process of the Rayleigh-Taylor (R-T) instability transition into the turbulent stage are presented. The experimental liquid layer was accelerated by compressed gas. Solid particles were scattered on the layer free surface to specify the initial perturbations in some experiments.

[Comparison of various diagnostic methods of Helicobacter infection].

Purpose Of Investigation: There has been conducted comparison of the most wide-spread methods of diagnosis of Helicobacter pylori infection: histologic, cytologic, method of polymerase chain reaction (PMCR) and respiratory urease Xelic-test on the method of AMA firm.

Materials And Methods: 1118 patients participated in the investigation, 403 patients were investigated by urease test and 50 ones were investigated by method of PMCR. The results of investigations were compared by means of correlative and variational analysis.

Phylogenetic and taxonomic relationships of northern Far Eastern phoxinin minnows, Phoxinus and Rhynchocypris (Pisces, Cyprinidae), as inferred from allozyme and mitochondrial 16S rRNA sequence analyses.

Analyses of allozyme (18 loci) and partial mitochondrial DNA (mtDNA) sequences (1295 bp, 16S rRNA) support the classification of phoxinin minnows from the northern Far East into 2 genera of 8 species: Phoxinus phoxinus, Rhynchocypris oxycephalus, R. perenurus, R. czekanowskii, R.

[Biological properties of the chick infectious bronchitis virus isolated in Russia].

A field chick infectious bronchitis virus (IBV) was isolated from the pathological material on chick embryos. The nucleotide sequence of the S1 gene was determined and comparatively analyzed with some sequences of this gene of foreign and Russian vaccine strains and isolates. A cross-neutralization test using sera to various IBV seroptypes was performed.

[Karyotype and relationships of the endemic char Salvelinus krogiusae from Dal'nee Lake (Kamchatka)].

Resident (lacustrine) chars, inhabiting many lakes of Kamchatka, Chukotka, and continental coast of the Sea of Okhotsk, are of particular interest for understanding the mechanisms of speciation and evolution of Salvelinus chars. Since one of these, the char from Dal'nee Lake (Paratunka River basin, southeastern Kamchatka), is substantially different from lacustrine-riverine and anadromous chars from the Paratunka River basin in several morphological traits, hemoglobin spectrum, ecology, and reproduction, it is considered an isolated species Salvelinus krogiusae. The karyotype of the resident char from Dal'nee Lake was shown to be variable in most individuals, containing 76 to 80 chromosomes in different cells, with NF = 98.

[Karyological differences of the Northern Dolly Varden Salvelinus malma malma and the white char Salvelinus albus from the Kamchatka River basin].

The karyotypes of northern Dolly Varden and white char, sympathrically inhabiting the Kamchatka River basin, were studied. The karyotype of Dolly Varden was stable: 2n = 78 and NF = 98 + 2, while in white char, polymorphism and mosaicism for the chromosome number were revealed: 2n = 76-79, NF = 98 + 2. Using a routine chromosome staining technique, the karyotype of white char (2n = 78) was shown to be identical to that of Dolly Varden.

[Karyotype of Chukotka char from Estikhed Lake (Eastern Chukotka)].

The karyotype of chars from the Estikhed Lake (Eastern Chukotka) was examined. This karyotype comprises 78 chromosomes, NF = 98. Marker chromosomes include one pair of submetacentrics, one pair of large acrocentrics, and one pair of large subtelocentrics with very short second arms.

Ultrafast spectroscopy of even-parity states in pi-conjugated polymers.

Relaxation dynamics of even parity ( A(g)) states in poly( p-phenylene vinylene) derivatives are studied using a novel fsec transient spectroscopy, in which two different excitation pulses successively generate odd parity ( 1 (1)B(u)) excitons at 2.2 eV and then reexcite them to higher A(g) states. For reexcitation energies Planck's over 2piomega<1.

[Karyotype and divergence of stream Dolly Varden from the Southern Sakhalin].

The karyotype of stream Dolly Varden inhabiting a tributary of the Belaya River (the basin of Naiba River, southern Sakhalin) was determined (2n = 82 and NF = 98 + 2). According to the main characteristics (chromosome number and arm number, the presence of a pair of marker submeta-subtelocentric chromosomes with nucleolus organizer regions (NORs), one pair of large acrocentric chromosomes, and one pair of subtelocentric chromosomes), this karyotype is identical to the karyotype of anadromous southern Dolly Varden from Salvelinus malma krasheninnikovi of Primorye and Japan. However, in most stream Dolly Varden individuals, additional active nucleolus organizer regions (NORs) located in telomeric and paracentric regions of two to three pairs of acrocentric chromosomes were revealed.

[Polymorphism and divergence of karyotypes in taimens of the Hucho genus].

Karyotypes of Siberian taimen Hugo taimen from the Manoma River (Amur basin) were investigated. The karyotypes examined differed in chromosome number from 2n = 82 to 2n = 83; chromosome arm number was NF = 112. These differences, as well as the difference in the karyotype of Siberian taimen from the lower flow of the Amur River (2n = 84) described earlier, are due to Robertsonian polymorphism of one pair of large submetacentric chromosomes.

[Acute cholecystitis and its complications].

The results of operative treatment of 4,011 patients with acute complications of cholecystitis are analysed. Problems of diagnosis and tactics and the results of treatment are discussed. It is pointed out that the management of patients with acute complicated cholecystitis is a great and urgent problem in abdominal surgery in view of the diffuse character of the process.

[Late results of endoscopic papillosphincterotomy in patients with non-neoplastic diseases of the common bile duct].

An investigation of long-term results of treatment of 226 patients has shown that endoscopic papillosphincterotomy is a highly effective method of treatment of patients with cholelithiasis and stenosis of the major duodenal papilla. The complex use of the surgical and endoscopic methods of treatment gave most favorable results.

[Endoscopic papillosphincterotomy in the treatment of choledocholithiasis and its complications].

Endoscopic papillosphincterotomy was performed in 306 patients with hepatocholedochal calculi. Mechanical jaundice was found in 271 patients (88.5%), 183 patients (59.

[Endoscopic retrograde cholangiopancreatography in the diagnosis of diseases of the organs of the hepato-pancreato-duodenal group].

Experience with using endoscopic retrograde pancreatocholangiography (ERPCG) in 278 patients has shown the method to be the most valuable one in preoperative diagnosis of diseases of bile ducts. It facilitates establishing the presence of calculi in bile ducts, diagnosis of stenosis of the major duodenal papilla and cholangitis. ERPCG allows establishing the localization of a tumor process in bile ducts.