Ventilation Of Premises In Mines, Shops Of Factories

ventilation of premises in mines, shops of factories and the - factories making asbestos, varnishes, substance, etc. Workers of these enterprises not less often than 1 time in 6 should - be exposed to careful medical examination and photoroentgenography for revealing of early displays of a cancer of a lung. Sanitary-educational work should promote reduction of number of smokers. Pathological anatomy: the lung cancer develops - from bronchial tubes and bronchial e. Allocate three basic histologic kinds: 1) a cancer (with , without , not differentiated-); 2) a ferruterous cancer of various degree of differentiation; 3) not differentiated cancer (, or ). Quite often histologic structure in different sites - of a tumour is various. In these cases speak about (having two kinds cages) and (cages having three kind) tumours. From integumentary bronchial tubes develops a cancer, from bronchial glands - - ferruterous. In early stages a lung cancer find out in the form of a plaque or on a bronchial tube mucous membrane.

Despite Variety Of Clinical Displays Of A Cancer

Despite variety of clinical displays of a cancer - of a lung, it is possible to allocate some the most typical variants of its current. The central cancer. ( and ) tumours in an initial phase of the development do not give typical - clinical displays. The beginning of cough patients, especially - smokers, carry the account of an aggravation of a bronchitis. Sometimes patients complain of some difficulty of the exhalation, "whistling" breath. At radiological research during this period it is possible - to note occurrence (caused by difficulty - of an exhalation) emphysemas of a site of the pulmonary fabric ventilated through the amazed bronchial tube, and also symptom presence Goltsk-nehta - Yakobson (displacement towards the amazed lung at a fast deep breath). Further cough - it becomes frequent hoarse, in there are blood proveins. The local emphysema is replaced by occurrence of a zone of hypoveins-tiljatsii of a corresponding part of a lung. In this period more often after overcooling develops cancer -.

Outflow Of Blood From Vessels Of Large Bronchial

Outflow of blood from vessels of large bronchial tubes occurs on the bronchial veins running into unpaired and semiunpaired veins, and from capillaries of small bronchial tubes directly - in a branch of pulmonary veins Between branches of small pulmonary arteries and veins are available shunts which in norm do not function and open only in the presence of a number of pathological conditions. As from pulmonary vessels in - bronchial, and on the contrary, from bronchial arteries in pulmonary vessels, blood dump Lymphatic system of a lung is possible is well developed and consists from: 1) initial networks of lymphatic capillaries, 2) textures, 3) taking away vessels which join lymphatic channels. Allocate four groups lymph nodes: 1) intrapulmonary, located in lungs and in places of division of bronchial tubes-, 2) , lying in area of gate and a lung root, in yax divisions of the main thing and share bronchial tubes, 3) , located in a place tracheas, 4) , located along a trachea. The lymph current goes from periphery to a root of a lung and to a confluence of a lymphatic - channel passes at least through one of a lymph knots.