38 research outputs found

    Epidemiological and clinical features of lymphoproliferative diseases in the head and neck region

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    Background. Lymphomas are a heterogeneous group of the lymphoid and hematopoietic system tumors. Neoplastic process often develops in head and neck area, including the integumentary tissues, orbit, nasal cavity, paranasal sinuses, oral cavity, pharynx, salivary glands, thyroid gland, as well as neck lymph nodes. The difficulties of head and neck lymphomas diagnosis are significant, since very often there is a combined non-tumor pathology. The high heterogeneity of lymphomas in the head and neck area requires structuring knowledge about their epidemiology and clinical manifestations.Objective: to study the epidemiological and clinical features of the head and neck lymphoproliferative diseases, which will lead to an improvement in diagnostic quality of this nosology's.Materials and methods. The frequency of head and neck lymphoproliferative diseases detection was estimated based on the study of epicrisis and clinical data of 174 patients hospitalized at the N.N. Blokhin National Medical Research Center of Oncology in the period from 2000 to 2020.Results. Taking into account the modern clinical and morphological classification of lymphomas of the World Health Organization (2017), information about the features of localization, characteristic signs of extranodal foci and lymph nodes is presented. Detection frequency of various subtypes non-Hodgkin's and Hodgkin's lymphomas were determined on a sufficient cohort of patients.Conclusion. Based on the analysis of clinical and morphological features of head and neck lymphomas, epidemiological and clinical features are described in detail, and differences in the symptoms and clinical manifestations of non-Hodgkin's and Hodgkin's lymphomas with a predominant head and neck involvement are revealed

    Use of anticoagulants and antiplatelet agents in stable outpatients with coronary artery disease and atrial fibrillation. International CLARIFY registry

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    Physical basis of information processes

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    Asquaintance of students with the basic physical phenomena and processes underlying the receipt, storage, processing and display of information and features of the formation and circulation of information flows in physics

    Physical basis of information processes

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    Asquaintance of students with the basic physical phenomena and processes underlying the receipt, storage, processing and display of information and features of the formation and circulation of information flows in physics

    Interaction of radiation with matter Part 1. Interaction of radiation with gas-phase and liquid-phase systems Part 2. Electronic processes in metals, semiconductors and dielectrics

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    To familiarize the student with the basic physical processes of interaction of electromagnetic radiation of the optical range, ionizing radiation with atomic, molecular and crystalline systems in gas liquid solid-phase media; show the relationship of spectral-energy transformations of radiation with molecular and crystal structure

    Interaction of radiation with matter Part 1. Interaction of radiation with gas-phase and liquid-phase systems Part 2. Electronic processes in metals, semiconductors and dielectrics

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    To familiarize the student with the basic physical processes of interaction of electromagnetic radiation of the optical range, ionizing radiation with atomic, molecular and crystalline systems in gas liquid solid-phase media; show the relationship of spectral-energy transformations of radiation with molecular and crystal structure

    Surface morphology, magnetic resonant and antistatic properties of 07S11-KVfabric coated with stainless steel

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    A study of the mixed 07С11-KВ fabric (produced by Mogotex) with a coating of steel 12X18H10T, obtained by the method of pulsed cathode arc deposition in a vacuum of 3.5×10–3 Pa, was conducted. It is shown that optical microscopy has a number of advantages in studying the surface morphology of such objects as compared to scanning electron microscopy. The most contrast image is formed using dark-field illumination. When coating is applied, a droplet phase is formed, the droplet sizes vary from 2 to 10 microns. By the method of electron paramagnetic resonance, it has been established that the spectrum of coated fabric has an asymmetrical spectral line with a width of 101 mT, which indicates a high concentration of magnetic resonance centers and a significant resonant absorption of microwave energy. Resonant absorption at low magnetic fields is determined by clusters of iron, nickel, chromium, titanium, etc., with weak nonresonant absorption. The specific surface resistance of the fabric (side 1 / side 2) is 3.3×105 ohm and 5.6×105 ohm, respectively
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