Radiography of pulmonary edema

In the X-ray study, along witha picture of the interstitial edema manifested by the enhancement and deformation of the pulmonary pattern, one can find massive blackouts without anatomical boundaries, indicative of the accumulation of transudate in the lung parenchyma. Darkening is more often bilateral, located in the middle belts of the pulmonary fields, closer to the roots of the lungs, creating a butterfly pattern. In a number of cases, they also spread to the lower parts of the lungs.

The outlines of the dimming are fuzzy, the intensitydepends on their size. Since in most cases cardiogenic edema occurs, attention is drawn to the increase in size and changes in the configuration of the heart. Pulmonary pattern is strengthened mainly due to venous vessels, which contain excessive amounts of blood and increased blood pressure.

Severe toxic pulmonary edema

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An overview radiograph. Opening.

Exchange, toxic and neurogenic pulmonary edema differ from cardiogenic by the absence of changes in the heart and pulmonary vessels.

«Differential X-ray diagnostics
diseases of the respiratory and mediastinal organs »,
L.S.Rozenshtraukh, M.Winner

With inflammatory lesions of the lungs in the processmay involve interstitial tissue, or parenchyma of the lung; in a number of cases, the pneumonic process seizes the interstitium and the alveolar apparatus. The X-ray picture under these conditions is different. Thus, with interstitial pneumonia, in the main, multiple shady shadows are located, located both radially and in the form of thin-walled rings surrounding the lobules and acini. In the case of a predominant lesion of the alveolar apparatus, which is noted in a number of bacterial pneumonia. Further "

Croupous pneumonia often occurs atypically. In connection with the early use of such effective drugs as antibiotics and sulfonamides, in many cases there is no consistent change in pathoanatomical stages (tide, red and gray surgery, resolution), considered to be characteristic of this pneumonia. For the same reason, the disease only captures whole parts in part of the observations, limiting itself in most cases to a smaller amount of damage. In connection with this, at present, the term "shared pneumonia" has been used for a long time. Further "

This type of bacterial pneumonia inMost cases are manifested by focal changes. In a certain part of the observation there is a fusion of a group of foci into extensive obscurations without clear anatomical boundaries, often causing a need for differentiation from other diseases. Such extensive shading occurs usually in untreated or weakened patients. They are more often located in the lower or middle belts, sometimes occupying the entire width of the pulmonary field. The intensity of these obscurations is higher in the central regions; outlines. Further "

Relatively fast resorption of the detectedinfiltrate allows you to exclude a specific tubercular character of it. In some cases, it is necessary to perform sputum examination for mycobacterium tuberculosis, as well as tuberculin tests. In so-called central pneumonia, darkening is located in the medial part of the lung, while the external department remains free. In most cases, on radiographs in a direct projection, this picture is the result of a projection infiltration of the infiltrate onto the root and basal. Further "

One of the varieties of pneumonic processes,manifested radiographically darkening without anatomical boundaries, - staphylococcal pneumonia. The frequency of this disease in recent years has increased significantly. Distinguish primary staphylococcal pneumonia, which usually arises from the bronchogenic pathway, and secondary, the development of which is associated with hematogenous drift into the lungs from any purulent focus (osteomyelitis, mastoiditis, adnexitis, etc.). Primary staphylococcal pneumonia occurs more often in weakened patients, children and elderly people. Further "