Duct papilloma ppt, CARACTERISTICILE TESUTURILOR EPITELIALE
Congenital anomalies of the heart and vessels 10 Heart malformations are determined by various factors, some with severe movement disorders and oxygen that are incompatible with life, other compatible although initially not generally allow a long-term survival. They occur in animals as lack or excess malformations by malformations of position, or structural alterations septs or the heart valves.
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Shows theoretical and practical importance: Acardia total lack of heartlack of closing the pericardial sac, diplocardia double heart multiplicitas cordis multiple cordsdextrocardia heart on the right duct papilloma ppt of the mediastinumcardiac ectopia presence of heart in the cervical region, pectoral or abdominaletc. Septs structural defects are common to all species.
The total or partial lack thereof, determines duct papilloma ppt appearance of cords bilocular right or left respectively upper and lower or bilocular cords biventricular, trilocular, biatriale or malformations incompatible with life. Persistence of the oval hole foramen ovale persistence after birth is located in interarterial septum and favors the mixing of the arterial with venous blood eventually causing death by hypoxia.
In the structure of all valves, duct papilloma ppt in the atrioventricular ones, can duct papilloma ppt found congenital hematic cyst with the diameter to an inch. Pericardium injuries Dystrophic lesions of the pericardium is of less importance in mammals, while in birds they produce irreversible changes sometimes incompatible with life.
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Serous atrophy of the pericardium occurs in older animals, in the chronic wasting disease. Adipose tissue in the heart is replaced with a substantial amount of transudate. The lesion is also known as gelatinous edema or "ex edema vacuo".
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Macroscopic instead of the fat tissue there is a yellow gelatinous mass-glassy, wet on section. Serous atrophy has practical duct papilloma ppt in veterinary checks for meat, it indicates a state of cachexia of the slaughtered animal.
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Ему представлялось, что он висит в пространстве в нескольких футах от отвесной стены башни Лоранна.
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Fat infiltration of epicardium is the opposite of serous atrophy. It is characterized by excessive storage of fat in this stage, and sometimes fat necrosis.
CARACTERISTICILE TESUTURILOR EPITELIALE
It is found mainly in animals subjected to the process of fattening cattle, pigs, poultry. Melanosis pericardial is a congenital process which occurs in calves, lambs, etc. Pericardial Gout is found in birds, being the expression status of general uric diathesis. Macroscopic, first,by the transparency duct papilloma ppt the pericardium is noticed in the pericardial cavity the presence of a white deposit like chalk more or less adherent to pericardium.
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Epicardium appears sprinkled with white paint. Microscopic reveals acicular crystals arranged in rosettes or amorphous masses uropurinice. In longest developments duct papilloma ppt the outskirts of uric deposits a lymphohystocytar mesenchymal reaction is observed with the appearance of giant cells, ultimately resulting in foreign body granulomas granulomatous duct papilloma ppt.
Installing the inflammatory process is possible duct papilloma ppt in cases where the bird holding a long "uric poisoning", facilitating the emergence and development of granulomatous inflammation. Changes in blood and lymphatic circulation Pericardial bleeding, manifested by bruising and suffusions, characterize the poisoning, being the consequence of increased fragility of the capillary basement membrane. Macroscopically, on the surface of the pericardium and especially to the heart epicardium indicate the presence of small reddish points distributed over the deposit of fat and coronary sulcus.
Such lesions are found in diseases like: - bacterial septic emice: anthrax, pasteurellosis, duct papilloma ppt - virotic: classical and African swine fever, Newcastle disease; - toxic: warfarin poisoning or with derivatives. It is found in all species, but especially horses, pigs and dogs.
Effusion is the accumulation of the transudation into the pericardial cavity. Pericardium and epicardium is shiny and smooth. It occurs in all species, with greater practical importance in pigs and birds. Chylopericardium duct papilloma ppt the accumulation in the pericardial cavity of lymph as a result of breakagethe thoracic duct Macroscopic, the presence of a lipid-rich milky white liquid.
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All "pericardial collections" described above, have a bad prognosis duct papilloma ppt may be the cause of sudden death in the so-called "cardiac tamponade".
Inflammation of the pericardium Inflammation of the pericardium are known under the generic name of pericarditis, it affects both blades of the pericardium and epicardium, the inflammatory process affects only the visceral foil. Are commonly found in cattle, poultry, swine, horses and carnivores are produced by toxic agents, infections and trauma. From an evolutionary standpoint pericarditis may be acute, subacute and chronic.
Pathologically are classified pericarditis: necrotic, serous, fibrinous, purulent, traumatic, Ihor, fibrotic and duct papilloma ppt. Necrotic pericarditis is common in lambs visceral necrobacillosis s being linked with lung necrotic foci. Macroscopic in the parietal serous pericardium are present outbreaks of gray-yellow, isolated or confluent, looking brittle, dry, of various sizes, surrounded by line bleeding in acute developments, less white in chronic developments.
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Serous Pericarditis is an inflammation observed in the evolution of acute septicaemic disease avian cholera, hydropericardium ruminants, etc. Parietal and visceral pericardial blades are congested, shiny and wet. Microscopic is observed vacuolation and desquamation of the mesothelial cells, congestion and edema subepicardic, leucodiapedesis. Serous pericarditis, duct papilloma ppt at this stage, has a benign evolution, being among the few sores that heal by "restitutio ad integrum".
In general, it evolves into a serofibrinous inflammation and fibrinous eg avian choleraor the serohemorhagic duct papilloma ppt eg coal emphysematous. Fibrinous pericarditis occurs in a number of infectious diseases and in the first phase of traumatic pericarditis in cattle. It is characterized by the appearance and accumulation of fibrinous exudate duct papilloma ppt the pericardial cavity.
Macroscopic, serous pericardium strips are opaque, thickened, rough, due to the deposition of fibrin on their surface.
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Pericardial cavity is enlarged and contains appreciable quantities of yellowish fibrin. Fibrinous exudate can unite the two skins of the serous pericardium, resulting in adhesions that can be easily removed. In the duct papilloma ppt mass can accumulate fibrin non hodgkins lymphoma cancer serous or purulent or hemorrhagic.
In relation to the predominance of one of these exudates, mixed pericarditis occurs serofibrinous, fibrinohaemorrhagic or fibrinopurulent, which are forms of transition from one lesion to another.
These specific pathological aspects are specific of acute days pericarditis.